Transcript
Most Often Needed
1949 RADIO DIAGRAMS and Servicing Information
THEORY
Compiled by
M. N. BEITMAN SUPREME PUBLICATIONS CHICAGO VOLUME 9
$250
Most - Often - Needed
1949 RADIO DIAGRAMS and Servicing Information Compiled by
M. N. BEITMAN
SUPREME PUBLICATIONS CHICAGO
M1948 TELEVISION M./ INCLUDES EVERY POPULAR TELEVISION RECEIVER
In this giant volume of television factory data, you have everything you need to repair every modern television set. For only $3, total price, you get complete service and alignment material on all popular T -V sets. You receive easy -to -understand explanations of circuits, 144 pages
of alignment procedure, test patterns, T -V antenna data, response
curves, oscilloscope waveforms, voltage charts, adjustment hints, many diagrams on mammoth 11x17 -inch blueprints, everything to bring you up to date and make you an expert in television repairs. FIND -FIX ALL TELEVISION FAULTS
Use this new practical "cyclopedia" of
television servicing as your guide to quick
fault finding and repair of any modern television set. Eliminates guesswork-tells you just where to look and what to do. Cuts hour -wasting jobs to pleasant mo-
1948 TELEVISION Contains material on all popular television lets, of Admiral, Belmont Radio, DuMont. Farnsuorth. Ceneral-Electric. Hallicrafter, Motorola, Phileo. C A.,
Sonora,
Stromherg-Carlson.
and
others. of test
oases description of circuits. many pages pattern,, response curses. oscilloacope waveform', alignment tables, sera ice hints. many diagrams in the form of giant double -spread blueprints. test points, voltage charts, Large sire: 8%111 in., manual style binding, flexible covers, priced at only
etc..1300
ments. Use test patterns for quick adjustment, or look up probable cause of trouble in the pages of hints after simply observing fault of picture on screen. No equipment needed with these tests. Or use your volt -meter and compare values with many voltage charts included. Observe waveforms similar to hundreds illustrated using test points suggested and in a flash locate what used -to -be a hard -to -find fault. This manual will give you the know-how of a television expert and will repay for itself with time saved on the first T -V job.
Compiled by M. N. Beitman.
radio engineer. teacher, author
& serviceman.
BIGGEST BARGAIN T -V TRAINING
For 15 years, radio servicemen expected and received remarkable values in Supreme Publications service manuals. The new 1948 Television Manual is a
virtual treatise on practical television repairs. By normal standards, such a large manual packed as it is with practical data, illustrations, diagrams, charts, photographs, and expensive extra -large blueprints, should sell for $10-but as another Supreme special value, it is
priced to servicemen at only $3, postpaid. Only a publisher who sold over one million of various radio manuals can offer such bargain prices based on tremendous volume -sales. Read about this new T -V manual at left. Find out about other radio manuals listed below.
RADIO DIAGRAMS AND F.M. SERVICE MANUALS
You can speed-up and simplify radio repairs with Supreme Publications Manuals. Service radios faster, better, easier, save time and money, use these most -often -needed
1948 Radio Diagrams
F.M. and Television
Be prepared to repair quickly all Use this extra -large manual of factory instructions for trouble -shoot- new 1948 radio receivers. In this big you have clearly ing, repairing, and alignment of all single volume schematics, needed popular 1947 F.M. and Television printed, large data, replacement parts sets. Covers every popular make, in- alignment lists, voltage values, and information cluding F.M. tuners, AM -FM com- on stage gain, location of trimmers. binations, and all types of television and dial stringing, for almost all rereceivers. Detail circuit diagrams. cently released sets. Makes toughest theory of operation, test hints, align- jobs amazingly easy. Find all faults ment data, including both meter and in a jiffy. A worthy companion to the oscilloscope methods. Use this recent 7 previous volumes used by over 120,Supreme manual to save time and 000 shrewd radio servicemen. Will money on your very next F.M. job. pay for itself on first job. Manual Data presented on 192 large pages. covers models of 42 different manuinches. 8,-x1 I inches. Sturdy, manual -style facturers. Giant aize to% binding. Tremendous value 192 pages -l -index. ManualPrice postpaid, only
$2
style binding. Price only....
wilfi
diagram manuals to get ahead, earn more per hour. For the remarkable bargain price (only $2 for most volumes) you are assured of having in your shop and on the job, needed diagrams and other essential repair data on 4 out of 6 sets you will ever service. Every popular radio of all makes from old-timers to new 1948 sets, including F.M. and Television, is covered. Clearly printed circuits, parts lists, alignment data, and helpful service hints are the facts you need to improve your servicing ability. Let these manuals furnish you with diagrams for SO% of all sets. There is no need to spend large sums for bulky, space wasting manuals, or to buy additional drawings every few weeks; be wise, use SUPREME Manuals to get the most in diagrams and service data for the smallest cost. Select manuals at left and below.
1947
1946
1942
1941
alignment data, voltage values, and service hints, manual style, large size, IV ,x11" Price, each
Supreme Publications Sold by all Leading Radio Jobbers
Copyrighted 1949, Supreme Publications, Chicago All rights reserved, including the right to reproduce
or quote the contents of this book, or any portion thereof, in any form.
2
1940
1939
MOST -OFTEN -NEEDED RADIO DIAGRAMS Each manual has between 192 and 208 pages of diagrams,
$A
2
1926-1938
DIAGRAMS 240 Pages
Price S2.50
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS INDEX Admiral Radio Corp. 7 7 7 7 6 6 6 8
4D1 4D11 4D12 4D13 5F1 5F11
5F12 6C1 6C11
6R11
9-11
Airline see Montgomery W.
Arvin 152T 153T 160T 161T RE -232 RE -233
240P 241P 242T RE -242
243T RE -243
244P RE -244 RE -248
250P RE RE RE RE RE RE
-251 -253 -254 -255 -256 -259
280TFM 281TFM 547, 547A 2410P
72 72 76 76 76 72 73 73 78 77 78 73 73 73 75 75 78 74 73 73 73 73 74 74 77
73
Belmont Radio Corp. 12 A -5D118 13 6D121 14 5240
Bendix Radio 55X4 65P4
16 15
Buick 980797 980798
141 141
Chrysler 802 C4608
82 82
Crosley Corp. 9-101 9-102 9-103 9-104W 9-113 9-114W 9-118W 9-119 9-120W 9-209 9-209L 9-212M 9-212ML 9-213B 9-214M 9-214ML 9-302 88TA, 88TC
Fada Radio & Elect. 34 790 33 795 Garod Radio Corp.
19 21
18 18 20 20 21 23 23 22 24 22 24 24
25 25 26 17
Delco see United Motors De Wald Radio Mfg. 27 B-400 27 A-500 27 A-501 27 A-502 27 A-503
35 35
5A3 5A4
General -Electric 14 60 62
102, 102W 107, 107W 113 114, 114W 115, 115W 118 119M, 119W 150 210 211 212 356
357 376 377 378
39 40 40 39 39 42 39 39 41 41 44 43 43 43 45 45
36-38 36-38 36-38
General Motors see United Motors Goodrich (B.F.) Co. 46 92505 46 92506 Hallicrafters Co. S -40A 47-48
Emerson Radio 557 559 565 570
573 574 577 580 583 120012B 120039B
120048B 120059 1200E4
28 29
28 30 32 30 31 30 32 31 32 28 29
30
Hoffman Radio Corp. 49 115 129
B503 B508 B509 B510 B513
Howard Radio Co. 481-A 481-B, -C, -M
50 49 50 50 50 49
51 51
3
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Mantola 92505 92506
46 46
Meissner Mfg. Co. 8C
52
Montgomery Ward Co. 748R-15018 55 74BR-1502B 55 84BR-1065A 54 55 84BR-1501, -2 B4BR-1503D 56 84BR-1504D 56 84BR-1507B 57 84BR-1508B 57 84BR-2003C 58 84GCB-1062A 53 84WG-2704D 59 84WG-2712A 60 84WG-2714G 61 84WG-2721C 62 Motorola, Inc. 0E2 PC2 5A7, 5A7A SR6 8A
BK8, BK8X CR8 CT8
FD8 8FDT BGMT
HN8 KR8 NH8 0E8 PC8 SR8 58A11 58Al2 58L11 58R11 to -R16 HS -58 HS -62, HS -62A
67X11 to -X13 68L11 HS HS HS HS
-114 -116 -119 -158
408 708
4
64 64 63 64 64 64 66 64 64 64 64 64 64 64 64 64 64 65 65 67
68 69
63 69
70 67 68 70 65 71 71
Noblitt-Sparks 152T 153T 160T 161T RE -232 RE -233
240P 241P 242T RE -242
243T RE -243
244P RE -244 RE -248
250P RE RE RE RE RE RE
-251 -253 -254 -255 -256 -259
280TFM 281TFM 547, 547A 2410P Oldsmobile 982455
Olympic Radio 7-622 7-638
72 72 76 76 76 72 73 73 78 77 78 73 73 73 75 75 78 74 73 73 73 73 74 74 77 73
Philco Corp. CR-2 CR-4 CR-6 UN6-100 48-300 48-461 48-472, -1 48-1262 48-1282 49-500, -1 49-501 49-503 49-504 49-505 49-601 49-602
Pontiac 984247
80 81 83 83 81 84
RS RP RC RC RC RC RC
142 79 79
85 87 86
86 88 88 88 88 88 89 89
-123D -178 -613A -615 -616
90 91 92 82 82
144
R.C.A. Victor 2S7ED 8BX5 8BX6 8F43 8R71 8872 8R74 8R75 8R76 8V7 8V90, 8V91 8V112 8V151 8X53 8X521 8X522 8X541 8X542 8X547 8X681 8X682 75X11 75X12 77U 77V1 RK-121C
Packard -Bell Co.
771, 771X
Philco, Continued 49-900E, -I 49-901 49-1401 802 C4608
95 93 94 95
97-98 97-98 97-98 97-98 97-98 96 102 108 99-100 104 103 103 105 105 105 107 107 106 106 101 96 99-100 99-100 111-118
109-110
96 108 -616A, -H 102 -618, -A 102 710V2 109-110 RC -1037B 95 RC -1040C 94 RC -1050 106 RC -1059
RC -1060, -A
93
97-98 RC -1061 107 RC -1064 104 RC -1065, -A 105 RC -1066, -A 103 Record Changer 111
MANUAL OF 1949 M OST-OFTEN-NEEDE D RADIO DIAGRAMS Sears, Roebuck & Co. 7080 122 8020 120 8070 122 8080 119 8083 122 8084 122 8086 124 8101 122 /24 8102, -A, -B 8107A 121 8108, -A 121 8153, -A 123 101.809 122 101.814 124 101.817 122 101.851 121 101.852 119 109.635 123 132.841 120
Sentinel Radio 1U -314E, -I 1U -314W
314E, -I, 41 323K 329-I, -R,
Sparks-Withington see Sparton
6B9 8L9
121 1030, 1058 1059 1060 1061 1064 1072
131
-A
132-133 132-133 130 132-133 132-133 132-133 132-133 132-133 132-133
Stewart -Warner C51T1 C51T2 A61P1
A61P2 A61P3 B61T1 B61T2 9036 -A, -B, -C
126 126 126 127 125
Silvertone see Sears, Roebuck Sonora Radio 100 101 102
Sparton
9045-A, -B 9046-A, -B
134 134 135 135 135 136 136 135 134 136
Stromberg-Carlson 137 1200 137 1202 1204 138-139 Truetone see Western Auto
129 129
128
United Motors R-705 R-1244 R-1245 R-1246
New F.M. and TELEVISION Manual Use this giant manual of factory data for trouble -shooting, repairing, and alignment of any recent F.M. and TELEVISION set. Circuit diagrams, explanations, service hints, tests. Covers every popular make, including F.M. tuners, AM -FM combinations, and all types of television receivers. 192 large pages, 817x11" plus index. Sturdy manual style binding. $2. Special price, only
ADVANCED RADIO SERVICING Use these 30 lectures in giant manual form to learn advanced methods, hints, tips, and suggestions. Take advantage of M. N. Beitman's 19 years of radio experience as presented in these easy -to -follow, illustrated lectures. Every servicing topic of importance, including P.M. and television. $3. 30 lectures, large size: 8% x 11 inches, only
143 140 140 140
United Motors, Cont. 980797 141 980798 141 982455 142 984247 144
Western Auto D1836 D1846 D2815 D4832
145 146 147 148
Westinghouse Elect. H-164 149 H-165 150 H-166, -A 149 H-167 149 H-185 151 H-188 152 H-190 153 H-191, -A 153 H-195 151 H-202 154 154 H-204 Zenith Radio Corp. 155 5D810 155 5D811 155 5E01 155 5E02 156 6D815 157 6E03 156 6E05 157 6R880 7E02 158-159 7E22 160 7H822 158-159 7R887 160
Simplified Radio Servicing by COMPARISON Method Repair radios in minutes instead of hours. Revolutionary
different
COMPARISON
technique permits you to do expert work on all radio sets. Most repairs can be made
without test equipment or with only a volt-ohmme.ter.
Many simple, point-to-point, cross-reference, circuit sug-
gestions locate the faults instantly. Plan copyrighted. Covers every radio set-new and old models. This new servicing technique presented in handy manual form, size 8%x11 inches, 72 pages. Over 1,000 practical service hints. 26 large, trouble -shooting blueprints. Charts for circuit analysis. 114 tests using a 5c resistor. Developed el 50
by M. N. Beitman. New 1948 edition. Net Price
i
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS IR5
455 KC
CONV
OUTPUT
DET. AVC. AF AMP.
2
2
LI
3V4
IU5
IU4
IF AMP,
DOT
T3
2
2
GREEN
--
T2
T1
69-0
4
6
R6 R7
7
I
5 2
CI4
C12c
R8
!we
455 KG Common Gnd (Line) Chassis Gnd.
SELENIUM RECTIFIER
CILL-»»m
7t I4
GREEN DOT 2
I
CI3
O O
\ SW 2 OSCILLATOR COIL 3
L© VM# 671/2 V
4
I-
BATTERY PLUGS 4 SHOWN TOP VIEW
O
4
3
K-TRAN CONNECTIONS
Switch section SWIG used only In sets with model numbers ending in "LW. For sets without SWIG, dashed line connection is made-
Power change switch 5,111 shown in operating position from power line.
2 COLORED
ILL
O
2
BOTTOM OF CHASSIS
DOT
Voltage readings taken between tube socket terminals and B minus (metal shell of electrolytic condenser). Dial set to low frequency, no signal, and volume control minim urn.
Measurements made from 117 volts AC line. If measured from DC line, voltages may be slightly lower. Voltage readings taken with a vacuum tube voltmeter. Socket terminals marked with an asterisk * indicate much
lower voltage or zero voltage if measured with a 1000 ohm per -volt meter.
If measurements are made on battery operation, tube filament and B plus voltages will vary with the condition of the batteries. These voltages will equal the terminal voltage of the A or B battery less the voltage drop through components.
If
taken with a
RESISTORS R1
CHASSIS 5F1 MODELS 5F11, 5F12
113
In
I
IL
*ori,
0
Description 100,000 Ohms, I4 Watt 3.3 Megohms, 1,q Watt
Symbol II2
oidin6tal
1000 ohm -per -volt meter,
readings will be lower or zero.
x 1
114
4115 0116
IA7 118 119
1110
R11
P12 1113 1114 1115
1
Part No. .60B 27-104 60B 27-335
Megohm, Volume Control and
75B 1-21 On -Off Switch 10 Megohms, 1/4 Watt.. ...........60B 27-106 4.7 Megohms Megohm 2.2 Megohms 6011 14-272 Watt............ 2,700 Ohms, 60B 14-470 47 Ohms, Watt ............ 2,400 Ohms, 2.5 Watt 1
1
1
61A 5-3 (Tapped Candohm) 60B 27-106 10 Megohms, 1/4 Watt (1111 not used in early production)
2,200 Ohms, 1/4 Watt 390 Ohms, 1/4 Watt 180 Ohms, I/4 Watt 120 Ohms, I/4 Watt
60B 26-222 6013 26-391
60B 26-181 60B 26-121
CONDENSERS
64B 1-28 .25 mfd., 200 Volts. Paper Gang, 420 mmfd. (max) 68B 14 Gang, 126 mmfd., (max) I 65B 6-3 100 mmfd., Ceramic C3 .01 mfd., 400 Volts, Paper._ 64B 1-25 C4 658 6-3 C5 100 mmfd., Ceramic 658 6-41 .001 mfd., Ceramic C6 m (tolerance - 0%, .4- 20%) .005 mfd., Ceramic 007 100 mmfd., Ceramic -I-C8 .005 mfd., Ceramic 0C9 65B 6-41 .001 mfd., Ceramic CIO (tolerance 0%, 20%) 648 1-22 .05 mfd., 400 Volts, Paper C11 C12a 30 mfd., 150 Volts 67C 7-1 Elect C12b 20 mfd., 150 Volts C12c 20 mfd., 150 Volts 67A 4-6 100 mfd., 25 Volts, Elect. Ct3 64B 1-30 Cl4 .1 mfd., 200 Volts, Paper 65B 6-41 .001 mfd., Ceramic. C15 (tolerance - 0%, 20%) (C15 not used in early production) T C7, Ca, R5, 116, 117 are contained in a multiple -unit component called a couplate (part number 63A4-3). Although a detective section of the couplate can sometimes be replaced by individual components, we recommend replacing the entire couplate. CI
C2a C2b
<11 10
-Npf-
-
1
I
I
6
Note that numerals 1, 2, 3, 4, 5, and 6 shown at schematic connections, correspond to couplate lead numbers printed on body of couplate directly above the leads.
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS IR5
455 K.C.
COW/.
4 ESECONDARY
(7n.)
2 .,.." PRIMARY ,
IU5
I.F.
DE T. AVC.-AF.
.1 (2n.)
NOTE: Some microphonic howling may occur on strong signals if the volume control is turned beyond the overload point. The following changes have been made in late production because some "B" batteries, with high internal resistance, may cause squealing at normal volume levels. (a) Condenser C3 (.005 mfd. 600 volt, oscillator plate bypass) has been replaced with a .1 mfd. 200 volt condenser. (b) Condenser C6 (.002 mfd. 600 volt, 3S4 late bypass) has been returned to the screen grid (pin 4) rather than to ground. (c) The speaker leads have been reversed, the red lead has been
Part No. 60B 3.473 47,000 Ohms, I/4 Watt ... 60B 2.561 560 Ohms, 1/4 Watt _ 60B 3.103 10.000 Ohms. 1/4 Watt...... 60B 3.335 3.3 Megohms, 1/4 Watt.. Megohm Volume Control 1 75B 1-22 and Switch SW1 60B 3.106 10 Megohms, I/4 Watt Watt......._...60B 3.475 4.7 Meghoms 608 3.105 1 Meghom, 1/4 Watt 60B 3.225 2.2 Meghoms, IA Watt
R2 R3 R4
B5 R6 Ft7
88 R9
OUTPUT
002
110050171
connected to the plate and the blue lead to the screen of the 3S4.
(d) For early production chassis which do not have the above
changes, the same results can usually be secured by adding 4 mfd. 200 volt electrolytic condenser from B+ to chassis. Be sure the condenser is connected in the circuit on the set side of the on -off switch. Do not connect it to the battery side of the switch or the inherent leakage of the condenser will apprecially shorten the "B" battery life.
COILS, TRANSFORMERS, Etc.
RESISTORS Symbol RI
3S4 C5o
NOTE: C5a, C5b, C5c, C5d and CSe are contained in a single unit (Buiplate). The numbers next to the C5 condenser plates on the schematic correspond to the lead numbers as shown on the drawing of the "BULPLATE" (see inset). If sections of this unit should open or short it will not be necessary to replace the entire Bulplate. Replace the bad section with a condenser of proper value. Note that leads 5 and 6 are common to more than one section.
OSCILLATOR COIL
3
IU4
Part No.
Symbol
__69B 38
Antenna, Loop 69A39-1 Coil, Oscillator.. 72B 28.1 Transformer. 1st 1.F. 28-1 Transformer, 2nd Transformer, Output -_______98A 13 Speaker (31/2" PM) 6 Output 78C 33 Transformer Part of R5 Switch, On -Off
LI
L2a L2b T1
T2 T3
SWI
CONDENSERS Part No.
Symbol
.01 mfd., 600 Volts, Paper .0001 mid., Ceramic_ .1 mfd. 200 Volts. Paper
Cl C2
C3 C4
64B 1.10 65B 6-3 64B 1-30
.25 mid., 200 Volts, Paper _....64B -128 150 mmfd., Ceramic .1 Bulpate .002 mfd., Ceramic 63A 2 _ .006 mtd., Ceramic ) See 100 mmfd., Ceramic 1 Schematic .005 mid., Ceramic J .002 mfd., 600 Volts, Paper.. 64B 1-14 O to 354 mmfd., Gang 1 68B 13
C5a C5b
I
C5c C5d
Cse C6
C7a C7b
CHASSIS 401 MODELS 4D11, 4012, 4D13
O to 107.2 mmfd., Gang f
VOLTAGE DATA
IU4 IRS 1.45
0
-5
145 0
0
0
4-.1
65
0 47
65
IU5
0 0
04* 145
18
*I
0 23
65
3S4 BOTTOM VIEW
Readings made between point indicated and chassis. Measured using a fresh set of batteries. Turned to low frequency end, no signal. Voltages measured with Vacuum -Tube Voltmeter. A second voltage reading (marked with an asterisk *) indicates readings made with a 1000 ohm -per -volt meter when use of this instrument would result in appreciably lower readings.
7
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS IU4
L
1R5
AMP
RF
W4
455 KC
CONY
C4
3V4
11_15
1.F AMP
AVC. A.F. AMP
DET
alt
OUTPUT
T2
CI
6
4-1
2
4
C25
L IF. 455
3L3
A,
CI3
CIRO
K.C.
Common LAne
con.Ie-I
SELENIUM
Chassis Ono.
RECTIFIER R13
Rie
Power theme swItch SWI shown In operating position trove pope, Its..
OSCILLATOR
+
M
354
IU4
1U4
tr.
COIL
IRS
ISO
RIB
Rlf
C
SWZ
R17
ON VC.
COLOR CODED
ra
-707
90
ESECONOARV (11n)
PRIMARY
°"" 3"""":1111, e. 1: 5*"
TOP VIEW
112.5A)
OF
BATTERY PLUG
CONDENSERS
RESISTORS Symbol Description RI 2.2 Megohms, 1/4 Watt R2 27,000 Ohms, 1/4 Watt
1 Megohm, 1/4 Watt
R3
AP
Ohms; other sets used pair of
18,000
C5 C6 C7
Ohm resistors in parallel. 3.3 Megohms, 1/4 Watt 60B 27-335 10 Megohms, 1/4 Watt 60B 27-106 C8 1 Megohm, Volume Control and C9
R6 R7
On -Off Switch.
R9 RIO R11
R12 R13
314
R15
BATTERY PLUG
.. .
g4R8 SCREW
C2a
60B 27-225 C2b 60B 26-273 60B 27-105 C2c 60B 27-104 60B 26-822 C3 C4
100,000 Ohms, 1/4 Watt .. .. 8,200 Ohms, 1/4 Watt... Note: In some sets, 115 was 10,000
FI4 115
0
CI
Part No.
316 ( 317 318 RI9
4.7 Megohms, 1/4 Watt 470,000 Ohms, 1/4 Watt._ 2.2 Megohms, 1/4 Watt 5.6 Megohms, 1/4 Watt 47 Ohms, 1 Watt 2,700 Ohms, I Watt
.753 1-26 .60B 27-475
CIO
60E1 27-474
C12
60B 27-225 .60B 26-565 60B 14-470 .60B 14-272
2,400 Ohms, 2.5 Watt Tapped Candohrn ......._ _ .61A 5-3
1,500 Ohms, 1/4 Watt... _____. 60B 26-152
820 Ohms, 1/4 Watt 220 Ohms, :/4 Watt. 150 Ohms, IA Watt--
__6013 26-821 __________60B 26-221
60B 26-151
C11
250 mmfd., Ceramic Gang, 420.0 mmfd. (max.) Ant. Section Gang 193.8 mmfd. (max.) RF Section Gang, 90.0 mmfd. (max.)
..65B 6-5 I
.___68B 10 I
100 mmfd., Ceramic...__....___
65B 6-3
250 mmfd., Ceramic__ ____6513 6-5 100 mmfd., Ceramic ..65B 6-3 .05 mid., 200 Volts, Paper_______64B 1.32 .001 mfd., Ceramic.... .... _____65B 6-41 (tolerance - 0%, -1- 20%) .005 mid., 600 Volts, Paper........... 64B 1-12 .05 mfd., 200 Volts, Paper...... ....64B 1-32
mmfd., Ceramic 6645B1;412 B6 mfd., Ceramic ................65B 6-41 (tolerance - 0%, + 20%)
100
.005 mfd., 600 Volts. Paper....... .001
.
250 mmfd., Ceramic ......... Cl4a 30 mid., 150 Volts C14b 40 mfd. 150 Volts Elect... C14c 20 mfd., 150 Volts C13
.
65B 6.5
1
......67C 7-52
J
.18 mfd., 200 Volts, Paper .64A 2-2 In sets with model numbers ending in 'DE", C15 is .1 mfd., 400 V. C16 .05 mfd., 400 Volts, Paper... 64B 122 C17 100 mfd., 25 Volts, Elect.._ ...67A 4-6 C18 .25 mid., 200 Volts, Paper _6413 1-28 CIS
Note:
BOTTOM OF CHASSIS
39 *2.1
1.3
2.6
13
1
2.6
85 83
51* 3 83
IU4
-11.5*
1R5
CHASSIS 6C1 MODEL 6C11
3.9
52
IU4
6.5
*.414*83 IU5
3V4
TUBE AND TRIMMER LOCATION For Bottery Operation Insert Plug Here. 11
giEJ
If taken with a 1000 ohmper-volt meter, readings will be lower or zero.
F
Voltage readings taken between tube socket terminals and B minus (metal shell of electrolytic condenser). set to low frequency, no signal, and volume control
Dial
minimum.
Measurements made from 117 volts AC line. If measured from DC line, voltages may be slightly lower. Voltage readings taken with a vacuum tube voltmeter. Socket indicate much lower terminals marked with an asterisk voltage or zero voltage if measured with a 1000 ohm -per -volt meter.
If measurements are made on battery operation, tube filament
and B plus voltages will vary with the condition of the batteries.
These voltages will equal the terminal voltage of the A or B battery minus the voltage drop through components.
REPLACEMENT OF BATTERY PACK Replace A -B battery pack with Ensign type AB50 pack, Ray -0 Vac AB994, General 60A -6F6-5, Burgess F6A60 or other equivalent.
To install a replacement battery pack, first remove the six screws that hold the metal bottom cover to the cabinet. (See illustration.) The battery pack is strapped to the bottom cover and will come out when the cover is removed. Pull out the battery plug, loosen the screw which holds the battery strap tight, and slide out the old battery pack.
Slip a new battery pack into place, tighten the screw which tightens the strap around the battery, plug in the battery plug and re -install the bottom cover.
C4I
A M.
L4
L2
P.
CD
Q
1--a
m
11
p.
Cl- H
CD 0
CID
00
.13 0 N
o ,-S
40
CI' i--')
& N.
>4
O ct
O
I_.
H 2.
O P>
k---t-Ct
2'13-17'
M2
M6
M3
-
200 mmfd.,4 Ceramic .0015 mfd., Ceramic
CIO
`551-
658 9-63 65A 10-1
C12 C13 C14
C11
C10
C7 C8 C9
.01
65B 6-57 65A 10-1 65A 10-1 65A 10-1 65A 10-1 65A 10-3
66A 19-2 658 6-4 65A 10-1
12A1,5
50 L
r
Description
T5""
12136
FRONT
R26
540
Port No.
I
658 6-7 67A 4-8 648 1-14 656 9-31 65B 9-24
I
C25 C26 C27 C28
C22 C23 C24
C21
C15
Coeff., Ceramic Elect
mfd., Ceramic mmfd., Ceramic
50
mmfd.,
Ceramic
658 6-4
(Used in early production only; removed to prevent detuning on FM.) .005 mfd., 600 Volts, Paper 648 1-12 648 1-14 .002 mfd.,600 Volts, Paper 648 1-25 .01 mfd., 400 Volts, Paper
500
.001
.002 mfd., 600 Volts, Paper
4 mid., 50 Volts,
I
C31
RIB
RR 0
12BA6 FM 2nd. I.F.
.01
I
Elect
,
mfd. m in. Ceramic
rnfd., 200 Volts, Paper
Volts J
Volts
(FM)
wound on C39. Solder one end to inside foil lead of C39.
Filter
RF
Coil, IF Trap Approx. 5 turns (18") of solid No. 22 hook-up wire
Choke,
Choke,
Cathode Choke, Heater RF Choke, Heater RF
Coil, Oscillator (FM) Coil, Oscillator (AM)
RF
Antenna, Loop (AM) Coil,
698 73 69A 69 69A 69 69A 20-3 AA139-5 73A 2-3 73A 2-3 74A 15-2
14-2
COILS, TRANSFORMERS, ETC.
65 .0015 rnfd. min., Ceramic (Used only in sets with model numbersnumbers ending in "N".)
.01
.1
150 150
65A 14-2 648 1-25 64A 2-2 64B 1-32 67C 6-40 648 1-30 656- 10-3
648 1-30 648 1-30 648 1-25
R21
L
Mt
1--
Description
1/4
R21
Part No.
608 2-273
6011 2-391
60B 2-224 60B 2-102
60B 2-474 60B 2-102
6013 2-471
608 2-474 60B 2-102 608 2-223
1
608 2 100
60B 3-475 60B 3-185 608 2-474 60B 2-473 60B 2-474 60B 8-151 608 2-154
(Tapped at 500,000 Ohms)758 2-12
1
1
60E1 1-682 6,800 Ohms, 1/4 Watt, 5%. 6,800 Ohms, I/4 Watt, 5%. . 60f3 1-682 608 2-104 100,000 Ohms, 1/4 Watt 608 14-330 Watt 3.3 Ohms, 60B 14-470 Watt 47 Ohms, 608 2-273 27,000 Ohms, 1/4 Watt 2 Megohms Tone Control and 75B 1-12 ON -OFF Switch SW2 Megohm Volume Control
390 Ohms, 1/4 Watt 27,000 Ohms, 1/4 Watt
220,000 Ohms,
Watt.,.. 1,000 Ohms, 1/4 Watt
47,000 Ohms, 1/4 Watt
470,000 Ohms 1/4 Watt 1,000 Ohms, /4 Watt 22,000 Ohms, 1/4 Watt 470 Ohms, I/4 Watt 470,000 Ohms, 1/4 Watt 1,000 Ohms, 1/4 Watt
_J
7
DIODE FILTER
RESISTORS
T6
RIO
:vv..
4-C32
4
4.7 Megohms, 1/4 Watt 1.8 Megohms, 1/4 Watt R22 470,000 Ohms, 1/4 Watt R23 47,000 Ohms, 1/4 Watt R24 470,000 Ohms, 1/4 Watt R25 150 Ohms, 1/2 Watt (R26 150,000 Ohms, 1/2 Watt R27 10 Ohms, I,/4 Watt R20
R19
R12 R13 R14 R15 R16 R17 R18
RII
R9 R10
R8
tR7
R6
17.5
R2 R3 R4
RI
Symbol
50L6
absC30
12AL5 RATIO DETECTOR
OUTPUT
R23
CIO.
T3
2r -- - -I
A.F.
4
AM 2nd. DU.
I2SJ7
mfd. min., Ceramic
L2 L3 14 15 16 L7 18
§19
L
mfd., 400 Volts, Paper .18 mfd., 200 Volts, Paper .05 mfd., 200 Volts, Paper
.0015
LI
C41
.C40
LC39
RS
T2
mfd., 200 Volts, Paper mfd. 200 Volts, Paper mfd,., 400 Volts, Paper
c23
I.F.
rnfd., 400 Volts, Paper...648 1-25 65A 14-2 .0015 mfd. min., Ceramic
.01 .01
.1
.1
"5
C24
tet
12BA6
C38a 70 rnfd., C38b 30 rnfd.,
C32 C33 C34 C35 C36 C37
C31
C29 C30
R/77
CIS
_ _T_J4
C3341.. L9
t Part of encased Diode Filter Unit 63A3-1. This unit consists of R7, C16, C17 (see schematic). If a section of the unit becomes defective, it may be replaced with a component of proper value. § Used only in sets with model numbers ending in "UL".
rnfd. min., Ceramic
.005 mfd. min., Ceramic .005 mfd. min., Ceramic .005 mfd. min., Ceramic .005 mfd. min., Ceramic
Coeff., Ceramic
35 mmfd., 10% Zero Temp.
(Silver mica) 50 mmfd., Ceramic .005 mfd. min., Ceramic
Symbol
128A6
Rt
SW2
65A 10-1 .005 mfd. min., Ceramic 100 mmfd., Mica I,C;16 C17I 100 mmfd., Mica C180 ,034 mfd. min. I Dual Ceramic. 65A 17-1 ClOb .004 mfd. min. C19 100 mmfd. 590,-.00075 Temp. 658 6 7 Coeff., Ceramic C20 100 mmfd. 5%,-.00075 Temp. §
Tc54
L7
M8
BOTTOM VIEW
RBA7
6513 9-15
'
6
e\Z,T7r2 L5 oW,.
L6
SW2
12547
PIN VIEW
REAR
SEGE
SW 2
REAR
HO 3
SW2
CONDENSERS
:MS
CI
ele
L --J'
I
1
AA
C 1/4..
.005 mfd. min., Ceramic mfd. (max.), FM RF 15 A1814 485.8 mmfd. ;max.) AM RF 15 mmfd. (max.) FM osc. Gong C4d 142.6 mmfd. (max.) AM Osc. C5 .01 mfd., 400 Volts, Paper... 64B 1-25 3-12 mmfd. Trimmer C6
§C2 §C3 C4a C4b C4c
Cl
F.M.ANTENNA COIL
COIL
L2
LI
L
PHONO
OSCILLATOR
AM
'6' Common Gnd.
,4"Chasals Gnd.
min
LIO
R27
I2BA7 CONVERTER
CI)
4:4
0
P71
Mz
z
1-3
O
1-3
cn
O
orb
O
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
Ofdinhai
MODEL 6R11
IMPORTANT PRELIMINARY ALIGNMENT STEPS In FM alignment, it is essential that every step be of the FM circuit are to be aligned, proceed from that followed. Especially important is picking the center of point on the chart being sure to follow all remaining the IF curve (step 4 in the FM -IF alignment instrucsteps. tions). During this portion of the alignment it is necesAdjustments made to FM-IF's at 10.7 MC, will require sary to tune the signal generator very carefully; it may realignment of AM -IF slug adjustments. necessitate having to estimate the dial readings to a tenth of a division. Under normal operating conditions or use, misalignment of RF or IF circuits with age will be slight. Lack of sensitivity and poor tone quality may be due to causes other than alignment. Do not attempt to realign the receiver until all other possible causes have first been thoroughly investigated. If complete alignment is necessary, it is essential that proper sequence be followed as tabulated in the alignment chart. However, if only the AM band or a portion
Check pointer position. With tuning gang closed, the
tip of the pointer clip should be over the 1/16" circu-
lar punch at the extreme left end of the dial background (see stringing diagram). Use an isolation transformer if available, otherwise connect a .1 mfd. condenser in series with low side of signal generator and attach to B minus of chassis. Be sure both the set and the signal generator are thoroughly warmed up before starting alignment.
FM I.F. AND RATIO DETECTOR ALIGNMENT
Keep output indicator leads well separated from signal generator leads and chassis wiring.
slugs in
Band switch in FM position (fully to the left). While peaking IF's, keep reducing signal generator output so VTVM reading is approximately +1.5 volts DC with exception of Step #5.
1
To avoid splitting the slotted head of iron core tuning
the IF transformers, use an insulated
alignment tool with a 1713" wide screwdriver blade. Do not exert undue pressure as threads of slugs may strip. Speaker must be connected during alignment. FM antenna disconnected during alignment.
Before proceeding, be sure to follow all steps listed above, under "Important Preliminary Alignment Steps." Connect Generator Receiver Adjust as Follows Output Indicator and Special Connections Signal Generator Frequency Dial Setting (very carefully) Thru .001 cond. 10.7 MC Tuning "A" (ratio detector to 2nd IF grid unmoduConnect VTVM (DC probe) from point "W" gang primary) for maximum (pin #1 of to B minus ("Y"). (See Fig. 7.) lated. wide open reading on VTVM. 12BA6 2nd IF) **Thru .001 cond
2
Iron cores "B" and "C" (2nd IF trans.) for maxi-
to 1st IF grid (pin #1 of
mum reading on VTVM.
12BA6 1st IF)
Iron cores "D" and "E" for maximum on VTVM. Readjust A, B, C, D, E, for maximum. (Keep reducing generator output to keep
High side 8
FM antenna
tt
terminal
VTVM at 1.6 volts)
4
a. Reduce output of signal generator until VTVM reads exactly +1.5 volts DC. b. Tune generator frequency above 10.7 MC until VTVM reads exactly +1.0 volt. Note exact generator frequency. Extreme care in reading this is essential. c. Tune generator frequency below 10.7 MC until VTVM reads exactly +1.0 volt. Note exact generator frequency. Extreme care in reading this is essential. d. Add generator frequency in step c to generator frequency in step d and divide by 2. The result is the center frequency of the IF curve to be used in step 5. See example on next page. e. Tune generator frequency above and below 10.7 MC and note voltage reading on VTVM at different frequency points until you have a good impression of the shape of the selectivity curve. If you have two peaks as in Figures 5 or 6, note readings (voltage) of both peaks. If one peak is over 20% higher than the other one, it will be necessary to realign IF's. A selectivity curve that would require realignment is illustrated by Figure 6. Center of IF selectivity curve per
6
Tuning step 4d gang above. See "EXAM- wide open PLE" on next page.
Iron core "F" (ratio detector secondary) for zero Connect VTVM (DC probe) from point "X"
to B minus ("Y"). (See Fig. 7.)
If any adjustments were very far off, it is desirable to repeat steps 3. 4 and 6.
10
**Do not feed I.F. signal into converter grid as this will cause mis-alignment.
voltage reading on VTVM.
(The correct zero point is located between a positive and a negative maximum.)
MANUAL OF 1949 MOST -OFTEN-NEEDED RADIO DIAGRAMS
admArd
MODEL 6R11
SETTING SIGNAL GENERATOR TO
consequent audio distortion will result. EXAMPLE: (See Figures 1 and 2)
AlPti
-1- 1- K.C.KC.
,-. ..J
K. C.
I0 7 M.C.
10.72 M.C.
on ..c
too
1CENTER OF I.F. SELECTIVITY CURVE ..J 0 of setting a signal > CAUTION: Due to the difficulty generator to the accuracy required by this operation, ex- 0 treme care must be exercised in making each setting. Otherwise, improper alignment of the ratio detector and
K.
Fig.
10.8 M.C.
10.64 M.C.
10.8 M.C.
10.64 M.C.
Voltage reading in Step 4a is + 1.5 volts. Generator frequency on low side of 10.7 MC for reading of + 1 volt DC = 10.640 MC.
0
0
0>
Fig. 2
1
a
Generator frequency on high side of 10.7 MC for a read-
ing of + 1 volt DC = 10.800 MC. Center frequency is obtained by adding 10.640 and 10.800, then dividing by 2. For these readings it will be 10.72 MC.
Set generator frequency to 10.72 MC as this is center of selectivity curve as shown in Figure 2. Note: Numerical vernier dial readings may be T used.instead of MC.
CORRECT
CORRECT
CORRECT
Fig. 6
Fig. 5
Fig. 4
Fig. 3
INCORRECT
FM RF ALIGNMENT PROCEDURE Connect Signal
Generator
Receiver Dial
Generator
109 MCt (unmodu-
Tuning gang wide open
Adjust as Follows
Output Indicator and Connections
Fr equencySetting
G for maximum Connect VTVM (DC probe) from point "W" VTVM reading. to ground. carbon resistor lated). *Tune in generator signal to high side 102 MCf II on receiver. Adjust H for FM antenna (unmodu- 102 MC max. VTVM reading. terminal lated). VTVM readings do not exceed approximately + 1.5 V. DC after peaking. * It is advisable to adjust generator output so described in "FM Alignment Equipment." use harmonics t If your signal generator does not reach Thru 270 ohm
6
7
rl
III© -
r
f
1-a-ti X
._
501.111T
ItS47
CHASSIS SOTTO'S AL
I
0
MN
I
..I
r.
eI
III
III
ol
0 --
AeF
T
12SAT
IESA6
zi
C s fLel5J EmD C.13 [
©
POINT!
m
540 SETSTING;
14
©
PON
GNGutton
CLOSED
GANG
CLOSED
i
AN ANT. STATO RANT.
it i
I TURNS
©
"I wel,
ifr -I-
-../IiMil-ll Trimmer Location Fig. IN
NM
With the gang fully closed, the tip of the pointer clip should be in line with the 1/16" circular punch at the extreme left end of the dial background.
II Fig. 8.
7.
Dial Stringing and Pointer Setting
AM ALIGNMENT PROCEDURE AM loop antenna must be connected and placed in the same relative position to the chassis as when
Use regular output meter connected across speaker voice coil.
Turn receiver Volume Control full on; Tone Control full treble.
in cabinet.
Use lowest output setting of signal generator that gives a satisfactory reading on meter. Adj. Trimmers Receiver Signal
Connect Signal
Dummy Antenna Between Radio and Signal Generator
Generator Frequency
antenna stator
.1 MFD
456 KC
in Following Dial Order to Max. Setting heading "Important Set Band Switch to Broadcast Position (center) and be sure to follow instructions under Preliminary Alignment Steps." Loop antenna must be connected. Tuning gang I, J, K, L Gang condenser Generator
1
2
Direct
AM Antenna connection Stator Install chassis and AM loop in cabinet.
Place generator lead close to loop of set to obtain 3
adequate signal. No actual connection (signal by radiation).
1620 KC
1400 KC
wide open
Tuning gang
M
Tune in signal
N
wide open
11
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS 12SA7
12SK7
CONVERTER
12SQ7
I. F. AMP. ED
'7EXTERNAL
50L6GT
2ND DET. A.V. C 1sT AUDIO
OUTPUT
GULP.
y ANTENNA
BO
O0 oo. d
C.1
2I2111
NNA PLATE RED
02-
00
300 IMF 000 D
20
5
IOU
5. 0
N3L.CONTROL
O0
500.000
R2
5.4
CII son
Ti -A
C
RI
04
RT
100,000
R3 3
221000
50MW
ISO
R4
3.3MEG
T4 OUTPUT TRANSFORMER
500101F C .02I2
4030
4.7 MEG
Oil
SOD
1
TIB
r
.05 SOOVc
PM SPEAKER VOICE
COIL
3.2 ENDS
6 ON OFF SVNTO1 ON VOLUME CONTROL
14-
e_
C7
RB C I4 -A
150.COD
AMY
Si
C13
CI4- B 11
20
.05.
105-125 VOLTS
AGO V
40
AC- VC
VOLTAGES MEASURED WITH A 5000 -OHM -PER -VOLT
DC VOLTMETER BETWEEN PINS DESIGNATED AND DUNE VOLTAGE 117 VAC.
20090
A- CANNOT BE MEASURED.
12507
1-32 VOLTS AC ACROSS PINS 2 t 7
123A7
RI I
12310 SOLIIGT
IIAC
CAPACITOR VALUES SHOWN IN MP UNLESS OTHERWISE
(.D7t5-13;
INDICATED.
RESISTORS ARE 04 WATT UNLESS OTHERWISE SHOWN.
27
11. (TIE POINT
35Z5GT
RECTIFIER
ALIGNMENT PROCEDURE Volume control-Maximum all adjustments. Connect B-of radio chassis (12SQ7-Pin 3) to ground post of signal generator through .1 Mfd. condenser.
SIGNAL GENERATOR Frequency Setting 455 Kc. 1720 Kc. 1720 Kc. 1400 Kc.
1720 Kc.
to Radio
POSITION OF IRON CORES (Dial Setting)
ADJUST TRIMMERS TO MAXIMUM
. 1 MFD.
Connect to Metal Antenna Backplate
All the way out
Iron Cores
Trimmers on output and input I. F. cans
.1 MFD.
Connect to Metal Antenna Backplate
All the way out
Iron Cores
Osc. Trimmer (C6) (See voltage chart)
200 MMF.
Connect to Outside Antenna Clip
All the way out
Iron Cores
Ant. Trimmer (C3) (See voltage chart)
200 MMF.
Connect to Outside Antenna Clip
Turn Dial to
Adjust position of antenna coil (See coil assembly view)
Connect to Outside Antenna Clip
Turn Dial to
Dummy Antenna
Connection
200 MMF.
NOTE "A"-The antenna coil assembly is made so that it is movable. When making the adjustment as given in the alignment move the coil assembly very slowly. It can be moved by hand procedure or by pivoting
one edge of the blade of
in the hole and engaging the blade in the gear teeth of thescrewdriver coil form. a
(in order shown)
1400 Kc.
Adjust trimmer (C3) (See voltage chart)
1720 Kc.
NOTE "B"-After the antenna coil has been tracked at 1400 Kc. it necessary
is
to check the antenna trimmer (C3) adjustment again at .1720 Kc. It no appreciable change in trimmer adjustment made the coil is in track. If the trimmer requires considerable change is it will be necessary to again adjust the position of the antenna coil at 1400 Kc. These two adjustments should be tried several times until no change of trimmer adjustment is required at 1720 Kc.
DIAL TUNING KNOB
ANT. GO IL
;;;,",I;;;,,?i,.1
THREE TURNS COUNTER CLOCKWISE
`11li11115.
-
IMMILA Ci
05C.,COIL
0
0
Coil Assembly View
DIAL SCALE DIAL POINTER
12
START
/
SAIntRacho TUNING SHAFT
MODEL A -5D118
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS R. F. AMP C3
IF
CONVERTER
I2SK7 12SA7
2ND DE T. AVC
AMP
117 ;-sAtcaz
12SK7
TT
EY
ANT.
CI
MODEL 61)121
t-
SERIES A
C IS
RECTIFIER
105 -125
VOLTS _D____
A.C.OR
RIO
PI
c=
35Z5GT
Ca
59 TS
D.C. 9
2
7
it I I
lijC I 0
72 519
NOTE: On some sets slug tuned I.-F.s are used instead of trimmer tuned I.-F.s. 108-140H and 108-145 are trimmer tuned. B -13A-12023 and B -13B-12022 are slug tuned. The slug tuned 1-F.s are tuned from the top and bottom (secondary
on top primary on bottom). Slug tuned I.-F.s cannot be used to substitute trimmer tuned I.-F.s but trimmer tuned I.-F.s can be used to substitute slug tuned I.-F.s. Part
VOLUME CONTROL
Schematic Symbol
No.
SWITCH OFF ON I
I
CONDENSERS SPEAKER
1=4=E NOTE TRIMMERS
12SK7 C2
C7
:
RESET
LOCKING
12SQ7
SCREW
C -8D-10953
C17
C -8F3-12 C -8D-10760 C -8D-10775 C -8F3-8
C3 C4 C5
C -RD -10778
I
ARE LACER CHASSIS.
e INPUT
0I. St 35Z5GT
3.5L6GT
11994 or
A -8C-10077 C-813-1.0770 129161 C -8D-10774 C -SD -10778
.15 MFD x 400 volts.
.002 x 600 volts, +40%, -15% .470 mpsfd., mica, -±20% .1 x 400 volts, +20%
Cl, C15
.25 x 200 volts, ±20%
C6, C8, C19 .001, mica, ±20% Electrolytic (for 60 -60 -cycle sets), C9, C10, C11 40 mfd. x 150 volts, 20 mfd. x 150 volts, 20 mfd. x 150 volts. .05 x 200 volts, ±20% C12 Dual .0001, mica, ±10% C13, C14 .02 a 400 volts, -.1-20%, C16 .004 x 600 volts, ±20% C18
RESISTORS
12SA7
455 N.0 .
LOOP
ANTENNA
Description
OUTSIDE
ANTENNA CUP
CHASSIS VIEW, SHOWING TUBE LOCATIONS (See note above on I. -F.$)
C -9B1-13 C -9B1-31 C -9B1-50 C -9B1-26 C -9B1-42 C -9B1-70 C -9B1-25 C -9B1-23 C -9B2-53 C -9B2-63 C -9B1-34 C -9B1-52 C -9B1-29 C -9B1-27 C -9B1-35 C -9B2-44
RI
R2 R3 R4 R5 R6 R7
R8, R14 R9 R10
Ell
R12, R13 R16 R17 R18 R19
1000 ohms, 1/2 watt, ±20% 1 megohm, 1/2 watt, ±-20% 100 ohms, 1/2 watt, ±10% 150,000 ohms, 1/2 watt, ±20% 22 ohms, 1/2 watt, ±10% 4700 ohms, 1/2 watt, ±10% 100,000 ohms, 1/2 watt, ±20% 47,000 ohms, 1/2 watt, ±20% 180 ohms, 1 watt, -±-10% 1200 ohms, 1 watt, ±10% 3.3 merohms, 1/2 watt, ±20% 150 ohms, 1/2 watt, ±10% 470,000 ohms, 1/2 watt, ±20% 220,000 ohms, 1/2 watt, ±20% 4.7 megohms, 1/2 watt, ±20%
33 ohms, 1 watt, ±10%
ALIGNMENT PROCEDURE No aligning adjustments should be attempted until all other possible causes of trouble have been checked. Chassis must be removed from cabinet for proper alignment. Slight adjustments of the oscillator and antenna circuits can be made, without removing the chassis, through two holes provided on the bottom of the cabinet. The two adjustment screws can be reached with a long insulated screwdriver. It is important that during alignment the loop antenna Dummy
be maintained at the same distance from the chassis as when the chassis is installed in the cabinet. Turn volume control to maximum for all adjustments. Connect. ground post of signal generator to B- of radio through a 0.1 mfd. condenser. Connect dummy antenna value In series with generator output lead. Connect output meter across primary of output transformer.
Connection
Band
Signal Generator Frequency Setting
Antenna
I.F.
455 Kc.
0.1 mfd.
Grid of 12SA7
1650 lie.
0.1 mfd.
Grid of 12SA7
1400 Kc.
None
Broadcast
Note A: Lay output lead of generator in back of loop antenna.
to Radio
Tuning Condenser
Setting Rotor full open
(plates out of mesh) Rotor full open (plates out of mesh)
Adjust for Maximum Output (see chassis view) 4 trimmers on input and output I.F. transformers (See note) Oscillator trimmer C7
on bottom of radio Antenna trimmer C2 Set dial See note A on bottom of radio at 1400 Kc. Turn up generator output. Loop antenna will pick up 1
3
500V.
100 V.
O
'
RI
0
100 use 404v
@WO
R16
4
0
T2
0.1
O
T3 AC
37
200 V
CS
.05
AC
24 84
400y
C6 0.2
100
84
34
4 3
33
RIO
4
ELECTROLYTIC
TRIMMERS
OUTPUT If
PILOT LIGHT
CHASSIS VIEW
7121306
IW
1200
R14
20 -
560,000
R9
800 V.
150
5065
102 84
5240
MODEL
111 AC
ANT. TRIMMER
C-I5A
C-15 B OSC. TRIMMER
`our
2WATT UNLESS OTHERWISE INDICATED.
-11-a-o- ITT-
ALL RESISTORS ARE
OTHERWISE INDICATED.
CAPACITOR VALUES SHOWN ARE ME" UNLESS
VOLTAGES SHOWN ARE DC UNLESS OTHERWISE
LINE VOLTAGE
INDICATED.
SOCKET VOLTAGE READINGS ARE TAKEN BETWEEN
PINS DESIGNATED AND B-.
DC
FA
0
02
V
0
IKt2
tl
eil42012/5
SPEAKER VOICE COIL 3.2 OHMS
VOLTAGES TAKEN WITH A I000 -OHMS -PER -VOLT VOLTMETER.
NOTES
RIO
84AC
SPEAKER SOCKET
SOCKET
5.5
PHONO MOTOR
PHONO INPUT SOCKET.
RADIO-PHONO SWITCH
2O -
I2A 6
R13 2201
35W4
40'
20 C13 -A
27
5 MEG
VOLUME CONTROL
R7 1-.002
R8
\IMF 500V.
220, 040
800 V
CS
35
RECTIFIER R12
iNAC
455 kc.
AC
Re 15 MEG
0
O
PILOT LIGHT
6-8 VOLTS 111
270
C9
.006
CIO
31AC
OUTPUT
12AC
50B5
12AT6 2ND DET AV.0 & 1ST AUDIO
ALL MINATURE TUBES
12E3E6
14LG
3.3
R5
47,000
R4
INPUT I.F.
84AC
500V
MAC
T4
cu.
C7
Iqd 7g:a
=0
Intermediate Freq
3 TUBE FILAMENT WIRING
GEAR TEETH
ioov
09
KooYC14
3 4
12AT6 128E6 12BD6 SOBS
52
SWITCH IN RADIO POSITION
680
R2
HOLE
C12
4
View of Coil Assembly
(V)
S1
RII
560,000
220P00
ANTENNA COIL
OSCILLATOR COIL
leass
1111
CHASSIS
T
CO
64
0M0
00
22p00 C4
I2AC
24AC
I.F AMP
The antenna coil assembly is movable left to right. When making the adjustment as required in the alignment procedure, move the coil assembly very slowly, either by hand or by pivoting one edge of a screwdriver blade in the hole and engaging the blade in the gear teeth of the coil form.
C/
L FRONT OF
105.125 VOLTS -
AC INPUT
S3
T7
PICKUP
PHONO MOTOR AND CRYSTAL
NMI
820
C3
C>
03
MN/
mo
C `2°,
TI
500 V
CI 330
12BD6
1213E6
CONVERTER
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
MODEL 65P4
BENDIX Circuit Aligned
Input
Pointer
Freq.
Position
IF
"1475 KC
OSC.
C9b, C9a,
right
C7b, C7a
1475 Ref.
C1c
**1475 KC **965 KC
1475
*1580 KC
580
CONVERTER
F
V'SHIELD Clb
T2 2ND
C9a
/
LF.i'
1
.1'
POWER
c
C Id
OUTPUT
BF.
kTUBE
CI
Cla
\ ,.......it SHIELD
C9b DEMODULATOR
ANT,
R
91ST AUDIO
R8 B SI CONTROL .1.--tONT
k
OSC.
C7 b 1
Mark
RF
I
Adjustments
Max. to
*455 KC
C2 ON LOOP
JI in PHONO. JACK RECTIFIER
1.152
TUNING ---11
TRIMMER LOCATION DIAGRAM
C1e, C2 +Check
965
Calibration w U
2 x u wm
or less
* Applied to Antenna Input through. I mfd
Ix
x
+ If dial pointer calibration is not within plus or
t.0
_
1-
en
.
I' DIAL REFERENCE POINTS I
I
minus 10 KC the gang r'tor plates must be bent to
o N
,r)
ul
cr
U x
U
16
L2 o03
** Applied to Antenna Input through 50 mmf. or less.
cause correct tracking.
I
1
I
CONDITIONS OF MEASUREMENTS ZERO SIGNAL
LINE VOLTAGE 117 A7C.
CONVERTER
I.F.
1407
I4A7
7- 3 700 75
0
28K
'''.
44
23
31
I
38K 77
G -7Q-32
F FREOUENGY 455
95
-.I
K_Q0
0 0
133093"H
130
100
rootC7b
#1. T apc,. 2-20 / C5
c
Lf1.:7.
I
2
14A7 /
2
4
0 6
/
/
C6
/
C9a I
_J
3
I4A7 5
7
C15
5
I°
.02
/-
ANY
IA V.! BUS
LB ".006 I10C
R3
2-20
38
3.3 MEG
052 C3
,05 .."".
SPEAKER
r04I a
C12 .01
1
LOUD
T4
4
14
47
47K 9.
C
T3
2
5
L
220K
.1
L_
1407
100
C14
R9 330 I 1,,A4AVA(
a.
9.,
I
47
C2
I
":58AKC
IA
"5: a4 a
TI
c;
H--
* LUG CONNECTIONS ONLY
R6
T2
ANTENNA CONNECTION
120
160
H50A.C. 11..c.,H 140 59
0 EXTERNAL
KH3
K155i3K*111°112A70A.C.R
00
38K 835A.C.H
A
o
115134
,..._
_E -p
E2
KC.
115A )
109A.CH 120 C.T.
38K -2
'I.4MEG.
47
H371;C ---45
35Y4
35A5 N.c.
51-mEG_G
__5___
RECTIFIER
POWER OUTPUT
0 0
0
0
0 38K K .9 H235A.0 23 5A.CH 30 30
A0
38K 14ACH
230 39AC H--
37 MEG
Is0
G
75
77
1.4
A0
P
0
1
38K 0,s
I SMEG
0 m-
Gy
73 G2
G- --j.-
38K
38K 50AC
-4.6
A. C. AT 1,00011 / V.
D. C. AT 20,00011
TO COMMON B MINUS
DEMODULAT1408R6a 1ST. AUDIO
R. F.
14A7
,, 0
VOLTAGE RESISTANCE
SOCKET
VOL. CONT. MIN.
2 R11
150
RI
R2
220
22K R4
C8
1.5 K
.05 8- COMMON BUS
NOTE:ALL CAPACITANCE IN WHOLE NUMBERS IN MMF. AND ALL CAPACITANCE IN DECIMALS
IN MF. ALL RESISTANCE IN OHMS UNLESS OTHERWISE STATED
K = 1,000 II
10A
8
9A
2A
GA
3A 4
SA
Bendix Radio
R 16
CI6
220K IA
0
7A
6A
FRONT OF WAFER LOOKING AT REAR,
*47
*47
098
2B
-_-
B 105V-I25V
3B 48
.1
58
/
C17
/
/
50-60 '1.0----1(---"-./ / 7B ACDG 05
68
BACK OF WAFER LOOKING AT REAR,
CHASSIS INVERTED CHASSIS INVERTED TONE PHONO SWITCH
4 8, 18
I
R17
35Y4
4711 SI 0
/
35A5
/
//
35 Y4
R 14
R15
180
1200
C182 60 MF
C18, 20 MF
C18.
40 MF
18 81
81
14A7
1407
14A7
I
8
14136
15
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS CONDITIONS OF MEASUREMENTS VOLTAGE
ZERO SIGNAL
117 A
VOL CONY YIN.
INPUT
IRS
IU5
_16
G2
W131(
03 230K
II
55
240K
PD
2430K
1.-----EG
1
Nc
,--L1__ 2406
CLOSED.
21,3) II7 AC
°
G
I
24011
4 MEG
Alf
240K
117 AC
L1 ,R
no.
240K
240K
240
240K
S2
IF
TUNING bl CONVERTER
SI
12
1.1.0
...-H
240K
SWITCH
117Z3
240 K
rEG--
21505K
240KOOO 6
55
N
-SC
__LS___
1,00011, V
AT
12
240 K
.05 3 3 MEG
MEG
1
AC
ILB4
-0.5
-----NC
25011
AT 20,000fliV
D.0
RESISTANCE TO CHASSIS GROUND.
114
-6
340K
75
VOLTAGE
SOCKET
OFF -ON
V LUME
AMPLIFIER
CIRCUIT ALIGNED
DIAL POINTER
INPUT FREQ.
IF
Max. To
t4551CC .01 mfd
APPLY THROUGH
ADJUST SLUGS -Top &
Bottom of T2
Right
SLUGS -Top &
Bottom of TI (Fig. 3)
OSC. & ANT.
7Z3 RECTIFIER 11
B' BATTERY LEAD BATTERY
OUTPUT DEIy1OD. Eit
117 V--/
LEAD
IST AUDIO
60, A -C
Bendix Radio
5 5X4
1475KC 50 mmf
Cld:Clb (Fig. 3)
965 Ref. Mark (Fig. 4)
965KC
SO mmf
* Check Calibration
580 Ref. Mark (Fig. 4)
580KC
50 mmf
* Check Calibration
t If calibration does not check within the frequency mark, both oscillator and antenna sections of the gang condenser must be bent to correct tracking.
BENDIX RADIO p
Dial
1475 Ref. Mark (Fig. 4)
* Signal Generator connected to external antenna connection for complete alignment.
Stringing Diagram
U
WY 0 CC M CO W
TUNING SHAFT
U
In
r-
co
.41
Dial Reference Points
cr Ti
EILT1Ri10
_ CI.
174
IR5 31
0
Ril
EG
CIA
ILB4 POWER
911100 5
1ST IF
2 CONVERTER
02
67 MEG
US
AMP
2
3
AMP
DEMODULATOR MIST AU
2
3
64
CIA 7
05
C14
GO
600
47
NOTES 10K"2
UNLESS OTHERWISE STATED CAPACITANCE IN WHOLE NUMBERS IN MAW , CAPACITANCE IN DECIMALS IN ME.
R13
CI3
005
MEG
115
RESISTANCE IN OHMS
3.5 MEG
5
WOO ./s.
Ri4 10
RA
CB
47MEG
R9
RI2
I MEG
10 MEG
C118
M40 UFO F O
05
11.05 W5
415
1T4 7
A'
II7Z3 RECTIFIER
ILB4 8
-H50MFO
B
RID
A.(526)
1806
.--------AOW/-----0.1jcrj. RI6
117 V DC OR 60 CYCLE A C
30MFD
CIO
1
15281
16
002
,
MAA
82
NMh
Rao
R171,
1000
1000
VOA
VOA
SWITCH Si OPERATED SB DOOR SWITCH 52 OPERATED 137 LINE CORD PLUG.
P-.1.10140 67.5V
0
--401100 A
6V
I
I
52
0185
H-
ASE
SO
4
O
MIXER
0---
F AMPLIFIER
S
-14
_0
45
0
40g,
Ar A 7.0
24--
OSCILLATOR
"30-,
MINNO("
IN. ANT. PHI.
I
94
219
94
(at
E
way
7 GT
25Z
§
ti.
a4.7.0
701116
.5
:eEj
CHASSIS TOP VIEW SHOWING ALIGNMENT ADJUSTMENTS
POWER CORD
INTERLOCK PINS TO
PRI.
C 107MC
TRANS.
SWITCH
AC. TWAIN
W1111114 JUNCTION
ISSOCKET VOLTAGE AAAAAAA CI 10% ,I.LOCAL - DISTANCE SWITCH IN LOCAL POSITION
I S
5.NC. NO CONNECTION
4. LING VOLTAGE II7V
2nd. I .F.
45
vo
f.,* 526 41 Ti. u.,7
120
-105' 112i'411:2t0"--112 120
WJ
RECTIFIER
FM DISCRIMINATOR
SOTTO. VIEW Of TRIM SOCKETS. TREASURE VOLTAGE WITH AN ELECTRONIC VOL PROW SOCKET LUG TO CHASSIS. S.ALL VOLTAIRE' ARE THE SANS FON 11.11 ITN DELTA MI.THIE IS ISO VOLTAGE WITH SAND SWITCH MTH( IN.POSITIME I
4111.
I07
AVI
137
855
POWER OUTPUT
100
`39
24
VV. 6
AUDIO AMPL.
0-44 *C).-
0
PT
T37 44 0: '11
IS. 442tP. -.0
V0 O
NOTES:
'12
119 :
TECTORS AVC
FM 2. 1-F AMPL 0 I©` 0'.."41 4S5 4;5
AM.
TRANS.
"Ist. LF.
M
TRIMMER CHASSIS
4 55K
--1:0116179Fa4
CSC. -CORE --
SOCKET VOLTAGE CHART
N MI
LV T
P:1"(1.
TRAiNER
SAMVION SPA.
PS
IV
4
0000000Q
r 3.
222
0
O
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
--CROSLE-YMODELS: 9-103, 9-104W
9-103
FREQUENCY RANGE: 540 to 1600 kc.
INTERMEDIATE FREQUENCY: 455 kc. EXTERNAL ANT. CLIP FRONT SIDE OF LOOP
TUNING CONDENSER GANG
IN TN( CLOSED ROSITION LENGTH of 0?AL CORO SSE -
SUPPORT
FROST LOOP TO LOOP
NOTE: RECEIVERS WITH TUBE SHIELD FRONT
PLACEMENT Of CURL DRIVE CORD
1400 KC
CHASSIS, VIEW
RECEIVERS WITHOUT TUBE SHIELD USE 5005 TUBE.
FRO
RE. AMPLIFIER
RECTIFIER
ANT. TRIMMER
USE SOBS TUBE.
STURM!
I
F. AMPLIFIER
*117
o
0
HO
435
'36
84
0 110
4 W. J.
114
84
CONVERTER
3.7
DET. AVC.& 1St AUDIO AMPLIFIER
NOTES: I. BOTTOM VIEW OF TUBE SOCKETS. 2. VOLTAGE MEASURED WITH AN ELECTRONIC VOLTMETER FROM SOCKET LUG TO
48 4
3. LINE VOLTAGE 117 V. 60 CYCLE. 4.
NC= NO CONNECTION.
5. W. J.. WIRING JUNCTION. 6
-4.6
* n'AC. VOLTAGE.
GANG CLOSED
7. SOCKET VOLTAGE TOLERANCE
±10%.
SOCKET VOLTAGE CHART 6E06
128E6 613.16
1ST
12056
SOC 5
280 I -F. TRANS.
I -f
TRANS_
0.1
PS
''TR'TLOS PYT.
Tr'
/
/ / /Ave
/
BMA
6 RC1.
307
/
01000 1
18
xxxrx
-(01I2A_LF-4.
SPEAKER
DENOTES CHASSIS
wiTz DENOTES COMMON WINING
0 DENOTES TERMINAL GUNDER
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS 117
21Ap
1.-F TRANS.
I -F TRANS.
SENN.
I LB 4
ILN5
LA6
LN5
0001
1,017.
)[
:;
350O
ACLU
m
D5
®amt LTE EEEEE 1TENS
sa n
of
1000 5, Ac. L F. EN ECIDENCL
181110E TRANS. 5 KC
2551.I -F. TRANS
1
9-101 MODEL: 9-101
-13. BATTERY PLUG B CABLE
®ANT.TRIMM ER
1400 KC.
LENSTA or DIAL COAD 5 r81051 LOOP TO LOO
EXTERNAL ANT, GROUND
t.F,OSC.TRIMMEK 4' 1620 KC. (FR F. T MUM E R
""
urNc CONDOMS. DAMS TA( CLOSED POSITION
NEST TO CDSSIS
1400 KC.
©OSC.IND.ADJUST,/
600 KC.
0
OUTPUT
I -F. AMPLIFIER
CONVERTER
41,
1.4
1.4
82
82
82
78
82
82
1.4 0
R -E AMPLIFIER OSC. GRID VOLTAGE GANG OPEN
0
1.4
DE T.- AVOT I 82
A -F. A MPL.
sT
1.4
W. J.
sifs
44 OS Z t6.47,501
-II VOLTS
0IIN
41
GANG CLOSED -8 VOLTS
57
giminvi00
-0 NOTES: I.
BOTTOM VIEW OF TUBE SOCKETS
2. VOLTAGES MEASURED FROM SOCKET LUG TO CHASSIS WITH AN ELECTRONIC VOLTMETER
CHASSIS REAR VIEW
3. W.J.. WIRING JUNCTION
V. N.C.. NO CONNECTION
5. BATTERY PACK VOLTAGE 'A' el.NVOLTS,4'.90 VOLTS 10 6. SOCKET VOLTAGE TOLERANCE
19
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
-GROfeLEY-
....,12
MODELS 9-113, 9-114W _
,,
.
V
T'.."73`fgr"::r:. L2441.4 OF 0.4L GOND 44i
\
LOOP
TO
gla 0 SC -7 14MER
'''' PLAOL41210 OF OIAL 02142 LOPIL
.
5005
.......
,"
4 117
V4J.
C.S
SW4
Apt"
0
, 5,0
.
S.
12BA6
7g
. amt..
OUTPUT Q3_)
*24
*85
40/04* 36 (A
44,
kali
a P1
ei.
1.(01-Mmit
VACW
V4111111111S'._,,k4/
'',11111I
VLJ.
117
I. BOTTOM VIEW OF TUBE SOCKETS. 2. VOLTAGE MEASURED WITH AN ELECTRONIC VOLTMETER FROM
*12
SOCKET LUG TO B-. 3. LINE VOLTAGE 117 V. 60 CYCLE. 4. NCN0 CONNECTION. 5. W.J. = WIRING JUNCTION.
41111Willb
41"44 30213E6
-52
/4P4%
...C4Ir
90
1
1111111AIL-12%ve6041
(D mil,J.
50
voila 44
_...,1411WO
-olimill-
GANG CLOSED
7. SOCKET VOLTAGE TOLERANCE 10%.
ALIGNMENT PROCEDURE Signal Generator Output In Series
Alignment Sequence
Frequency in kc.
with
To
Position of Tuning Cond.
Adjust for Maximum Output
1
455
200 mmf.
High Side of Loop
Open
A&B
2
1620
`Radiated to Loop
Open
C
3
1400
'Radiated to Loop
Tune to Signal
D
Place signal generator output lead near the loop antenna. EXT. ANT.
a (----2
2K
/,
" oriAm 3... .002
'T.47
[10
AC
00022
, ,=-
.0
o
/
// \\ \
l'' 0 14. 1 5 C14
,
0
._7,,__
\
.-
1
lot 470
.50 A
,,,,.. ,..
/ 3 >WO
.-7 ",
/
1-..
35W4
/
IF -455
pins cwAsSIS
........
ri4r, te...TEs co...0......,..c
-1,H000
120
121124
,,,.7uT TRANS.
.200
12±...414124,,,.
5005
NOTES
'TM KOT20
14,0
VOL COST
---...7--,--m: Co,L
/ //
310
mm'
I
0..
ti
I -I -2 ga
K1000
20
C'11( ,.
75
.'
0
TRANS
.05
12426
-
F
I
4
o
I
a -l--
1 ii
_,...
,47,//--L/
5.
ONO
1 =--1 -L
LOOP
5005
12446
12E146
I5T IF TRANS.
128E6
107
5
90
Cri
1°P1 0,._
90
DET. AVC. a 1st AUDIO AMPLIFIER
reNg
AC. VOLTAGE.
\- 90
0
CONVERTER *24
NOTES:
6. * .'
comer.
403 ODA
*3
WI 213A6 Oil
112
-
.
F. AMPLIFIER
I
1 12
li /girt 3c
' L,.romil
R
r
'MANE
1400
RECTIFIER
2"41.r
IF
1213E6
MER
el,
BOTTOM 455 KCW
16211 KC.
ANT. TR
st TOP a
ADJ
',TURKS
KEPT To CH13.5
I,
AV6
<
_
40.4 LOOP
ADJ'ST. TOP a BOTTOM 455 KG.0
,
__
44
5
-Los attiJ-4
...
/
rI--2...
SPEAKER
as
SCHEMATIC DIAGRAM (Second Production)
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
-CROSLEY
PLACEMENT Qr W I
0,6101
Cope
TWINE CONDENSER *axe Of THE CLOSED POSITION.
LENA,. Of DAL core SON
IRON LOOP TO LOOP
MODELS 9-102, 9-118W
NEXT, 3 1/E TURNS
R.
F. AMPLIFIER
I.
F. AMPLIFIER
POME 014P1T
"6.3 195
0
POWER
178
235
90
TRAIISFORI.IER
0
6.3
0
COLIVENTER
OET-AVC.-Ist. A.E.AFPL "6.6 0
RECTIFIER
250 NOTES: 1.Botto, View Ot So: Mat 2.Mseaure Voltage From Socket
Luc In
-IS(Enessie)
3.11olteges MisaawrAn Vito en Electronic Vol tsetno
275
N. M.J. ' W1r16 Junction. 5. N.C. No Commecticn. 6.
SOCKET VOLTAGE CHART
A.G. Voltage.
7. Voltage Tolerance, 106 11.7 Y, 60 'J A.C.
8. Imo Voltage
00000 t4n
785 055 KC
I
OUTPUT TAME
0 IN
NAL ANT LO9E-
050. TRIMIN
162085 ANT.
21
N N
8
/WW
tl
O
8
BOTTOM VIEW OF SOCKETS.
4.
1620 KC.
OS C. TRIM.
eVA
3. VOLTAGE MEASURED WITH AN ELECTRONIC VOLTMETER,
*
N.C. NO CONNECTION.
W. J.. WIRING JUNCTION.
*6.3
DET.-AVC-
6.
ANT. TRIM 1400 KC.
00P
-EXTERNAL ANT.
PICKUP JACK
-GROUND
ek
5
1-3
U2
0
t ri
SOCKET trj
AC. PHONO. MOTOR
V$1"
AV, *-4P**27
04%
I**
CO
40
4.5
RECTIFIER
TO PIN SOCKETS ON SPEAKER
*27
25
AMPL
7B5
1
PHONO.
ti
'1`c..
OUTPUT
AC. VOLTAGE 7. LINE VOLTAGE 117 V..60% AC. 8. SOCKET VOLTAGE TOLERANCE 10%.
S.
AT 11120 AC.
-9.5
90
0
CONVERTER 195
0
6.3
.6 3
0
90
90 0 0
235
178
195
0 195
2. MEASURE VOLTAGES FROM SOCKET LUG TO (CHASSIS).
1.
*
I -F. AMPLIFIER
*6.3 0
R -F. AMPLIFIER
NOTES:
0
0
*6.3
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS i
-GROSIEN-
12846
ADJUST SLUG47, AT TOP B Lai BOTTOM OF TRANSFORMER HIGH SIDE LOOP
MODELS 9419, 9-120W 9-119
I
I
7
man,
wawa g
455K.
"4""
1810."1
1st 1,F.
441111
IIMMIll
TR
lIMMIIIIIIIIIIIM, raMNIIIIIIIINIIk
-
CP. rd C I
o« »c CONDENSER 4NS LENGTH OF OIAL CORD
III 740C1S0,701. LOOP
\\ '_
'Mew
"
.
3 TURNS
TOWARO
CHSS1S 61
OSG. TRIMMER KC.
ALIGNMENT PROCEDURE
\ ANT TRIMMER1620 `-'. 1400KC
1. Connect an output meter across the speaker voice coil.
2. The r.f. signal input from the signal generator should be connected to the high side of loop antenna. Connect the signal generator ground through a 0.1 mfd. condenser to B- (pin 2 on 12BA6 tube socket).
3. Turn the volume control on full and adjust the signal generator output to produce approximately midscale deflection of the output meter, but maintain signal generator output- as low as possible to prevent AVC action in the receiver. Signal Generator Output In Series
Alignment Sequence
Position of Dial Pointer
Adjust for Maximum Output
1620
A
*Radiated to Loop
1620
B
*Radiated to Loop
1400
C
Frequency in kc.
with
To
1
456
200 mmf.
High Side of Loop
2
1620
3
1400
* Place signal generator output lead near the loop antenna. MIAS
26E6 3 I
s
I21T6
00025
01,
N
->.
6
as
7
r-
...--- III-___.
-
2-
v
--=--
-7I
111
IV 00if025
22R -6~il
1
id
.
'
/
/
/
/
7-,
/
-
//
1"
VOLUME
CON ROL ORR
A --A
/
\
g
.0
1200Z....1
:3.;
-
.0.
364
// ATE 'I ISAR
OUTPUT AAAAA
12 E6
5095 3
NOTES I
0,0
I hlts
50 - -5- 30
2 1000
2 So MEC
...._CO
3 II4552C
----ri----±" g17
LL CAPACITANCE VALUES IN mE0
TT Rtr
NLESS OTHERWISE NOTED
5.//J Downs CRAWS GROUND
.4' %'0:1TR:vt'S'ZI*)TES OrCTLWIr
ag0
23
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS TYPE: Six -tube, single band, superheterodyne. FREQUENCY RANGE: 540 to 1600 kc. MODELS 9-209L, 9-209L, 9-212ML, 9-213B
INTERMEDIATE FREQUENCY: 455 kc. POWER SUPPLY: 60 cycle a. c. only VOLTAGE RATING: 105-125 volts. sro
.Shit
I
F
N 000
PLACEMENT CF DIAL DRIVE CORD
T....
LEMON Of
OO/. GAM L.11.. .610 PORI. Loa To woo
AC.PHONO MOTOR
SOCKET
OANT. TRIM
1400 KC. R -F TRIM
PHONO
1400 KC.
PICK UP JACK
EXT. ANTENNA
24
TO PIN SOCKETS ON SPEAKER
LOOP
ADJUST TOP 8 BOTTOM 455 KC.
0'
AC CORD
O
/
REAR
102A
1
-1-4)
11344
2 NMI
.0SC COIL.
F M.
1ST
263
SUB CHASSIS
El E A
0F
C
C NC
D
Ul
00 0
00
O
O
00
O
00
O
0
000V
00
0
El
A
RATIO HT. TRANS. FC
E
F. TRANS
31/2 TURNS
FROM LOOP TO LOOP.
AE
I
33 NNE
/
B.C. LOOP
SUB CHASSIS
7F8
14
000
171 AF
5
COIL
1.0A
L.
31
B C. R. F.
/
RE CHOKE
/
NV
2021.
LENGTH OF DIAL CORO 53%
a
IF. TRANS
NEXT TO CHASSIS
ISO
i3i
COIL
RE.
CHOKE
B.C. AN T./
Ed O t!! Ca
6 567
TUNING CONDENSER GANG IN THE CLOSED POSITION
/
r
7'6.617
a
ar-mow
ISIS
NN20 E
PLACEMENT OF DIAL DRIVE LORD
10
kTiG
76 12
1024
,ax°
F -M, ANT. COIL
1310
twE
4
7
CHASSIS 9-2)4M
AUDIO B POWER SUPPLY
3.A.M. (AS SHOWN)
I. PHONO.
7
T
1000111If
ID
0 01
1000 Mt..
2.10410
110200
1-0
.1
3.1.J. DENOTES WIRING JUNCTION.
UNLESS OTHERWISE NOTED.
Z. ALL CAPACITORS IN MFD.
SUB CHASSIS
lit IF TRANS.
SELECTOR SWITCH (LEFT TO RIGHT)
_LAMM .1.05
INCA
.1:05
200
I. 6.1000
NOTES:
MAIN CHASSIS
401
I
Fp
020 FRONT
4rg.
NF
BC. OSC: COIL
r2
10213
67
IN N%
100
6AC7
101 HG
$Ero
6S G9
2
12
.005
4
o
a a
ID
73
3
50410
6507
MAIN CHASSIS
~
-
Tx'
22034'
O1
GTI7 MC-
111A
R ATIO DET. TRANS.
NW IOTA. TONE CONT.A.A., 3.FfC ° 220 0.
3.17
11
3
6SG7
lJ
IA
EV
Es)
rVr
130
2244
6507
GT
513
ANN
woo.
SSOK
PAY?
00.
11
201110
400,3
INTERMEDIATE FREQUENCY: AM Band: ;4::' 1455 Ice. FM Band: 10.7 mc.
10 MEG
--- --GOA F-
VOL. CONT.
2.5 MEG.
I
NNE,
I
4'
70
d (C7
0d
:M 455 NJ
F m 10 7 M
I -F TRANS.
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS TO EXTERNAL ANT. CLIP ON LOOP BACK
1111P. INSERT POWER CORD PLUG FOR BAT -E RY
FRONT
OPERATION
RF TRIMMER 1400 KC. ``"
F
-CROSLEY
OSC.TRIMMER
1620 KG. ANT TRIMMER 1400 KC. CONNECT RED
WIRE FROM LOOP
MODEL: 9-302
CONNECT YELLOW
WIRE FROM LOOP
SELENIUM
RECTIFIER BATTERY PLUG
A.C. CORD
A CABLE IL.
211/ I F TRANS.
ISOI. TRANS.
OF. CM COOP
PLUG
IL.
IRS
7 4A
3,1
IU5
o
F701 /
/
:f141`n
.48
/r/r/
OS CO
4,,
L
sssss la
is
t/AGILFT.4!_111H-PIHY. 441.4 4.
CHASSIS, TOP VIEW
C OOOOO POSITIOP
..C.41 OF Coial COPO /Of POMO LOOP TO LOOP.
OUT PUT
R -E AMPLIFIER
65
G88
0
7.5
90
A1.3
1.2 1.3
78 I -F AMP IFI 9.0
84 A 5.2
W. J.
0
62..688
90
IsTA F. AMPL.
3.1574 401
5. 2
A1.3
A88
1.5
90
3.0
A50 50
CONVERTER
DET: AVC. 5°
2.6
401
R
4.5
50
6.0
Re AWA%
1,5
88 90
6.0
26.5
27
50
150
.5
823 23
SOCKET LUG TO B-. 3.w.Jv WIRING JUNCTION.
2.6 3.0
N.C. NO CONNECTION.
OSCILLATOR GRID VOLTAGE POSITION lir VOLT BA tTENY
26
--11
CLOSED OPEN
6-4 -8.6
S.6.VOLTAGES MEASURED WITH RADIO PLUGED INTO Ill VOLT,
-3.8
60 CYCLE LINE. G.* 60 CYCLE VOLTAGE.
- 8.2
T. ALL OTHER VOLTAGES mEASIA ED IN BATTERY OPERATION
OF GANG OPERATION OPERATION
SOCKET VOLTAGE CHART
NOTES. I. BOTTOM VIEW OF TUBE SOCKETS R. VOLTAGES MEASURED WITH AN ELECTRONIC VOLTMETER FROM
POSITION wiTN'A' *VOLTS, -1,- 90 VOLTS.
*.SOCKET VOLTAGE TOLERANCE
10x.
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
DEWMJ
MODELS - A 500 - A 501 - A 502 - A 503
RADIO
SO/ 6 67 -
/2,5427
esx-
125,47
L
0
PA,
,05
To calibrate receiver connect
ti
35Z,56T
3
th output of signal generator to
the flexible antenna lead attached to the loop antenna. Connect the lowside of signal gnra torthrough a 1/10 mfd. condenser to receiver chassis. Adjust signal generator to 455 kilocycles and adjust both I. F. transformers for maximum sign l. Open the receiver variable condensr for minimum capacity. Set na /0,5 V- /25 V
,,
/2$97
/2547
/2.5K7
le1/4) PZ Or PAf.
50L6 67-
.47 ..aPP
signal generator at 1720 kilocycles.
AC-D.C. Peak oscillator section of receiverf.0-6o cxy-E5
1'
condenser for maximum signal.
Next set signal generator at 1500 kilocycles. Tune in this signal. Adjust R. F. section of eceiyr variable condenser for maximum signal strength. Keep the signal generator output as low as possible when making all of these measurements.
ANTENNA:
The receiver operates satisfactorily without an antenna. If additional pick-up is desired, an antenna may be connected to the lead, extending from the rear of the chassis. VOLUME CONTROL:
The left knob of the receiver is used as the power switch and volume control. Rotation of this knob in a clockwise direction turns the receiver "on". Further rotation in this direction increases the volume. STATION SELECTOR:
The right hand knob operates the tuning in of stations and pointer. Ease and accuracy in tuning is provided because of a reduction drive.
1T4
1 R5
2110
4104.C.
1S5
.011et,
3V4
7t (
220 IMF 3.3 eta I R5
114
I S5
3V4
/ 47.0V
27
co
N
IF=10.7 MC FM
IF -455 KC AM
11'
SEC, 2 KS.
0
3CCI. a f40.41
0
.
TUBE
6SH7 6S8GT 6S8GT 25L6GT 25Z6GT
6SB7Y 6SG7 6SG7
Taken in FM Position.
6
, 5B
5A
T4
3
2
1
65067
SECE
1
SSW
I MAO
SSW 7
I 7
4141
0
6687
7
11,11
31K ohm 30K ohm
35 ohm 46 ohm
PIN 1 PIN 2 0 ohm 22 ohm 0 ohm 17 ohm 0 ohm 17 ohm 0 ohm 3 ohm 520K ohm 0 ohm Inf. 0 ohm
0
0
100K ohm 100K ohm 30K ohm 175 ohm
0 ohm 0 ohm 0 ohm
30K ohm
PIN 3
PIN 5 0 ohm 0 ohm 0 ohm
22K ohm
r.
6S8
0
30K ohm 30K ohm 7K ohm 500K ohm 500K ohm 30K ohm 30K ohm
PIN 6 .6 ohm
0 ohm 0 ohm 46 ohm 65 ohm
-
21 ohm 9 ohm 9 ohm
PIN 7
34 ohm-
PIN 8 _ 3.8 meg. 30K ohm 30K ohm 77K ohm 3 ohm 3 ohm 150 ohm 30K ohm
CHASSIS MODEL: 120048B
MODEL: 557 - 565
6SH1
Socket connections are shown as bottom views. Measured values are from socket pin to common negative.
200K ohm 100K ohm 200K ohm 31K ohm 420K ohm 30K ohm- 175 ohm
100K ohm
47K ohm
31K ohm 3.8 meg. 2.2 meg.
PIN 4
RESISTANCE READINGS
Emerson Radio SYMBOL
6SIOY
U2
0
tv
tri
MMz
z
1-3
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS MODEL: 559
EMERSON RADIO & PHONOGRAPH CORP. SIGNAL SIGNAL GENERATOR GENERATOR COUPLING FREQUENCY
DUMMY ANTENNA
High side to rear stator of
0.1 mfd.
1
455 kc
variable condenser. Low side to chassis.
RADIO DIAL SETTING
OUTPUT
ADJUST
Variable condenser fully
Across
Al, A2
REMARKS
METER
Adjust for maximum output. If a -c power is used without
duce dummy antenna to
200 mmfd. to
reduce
hum modulation.
Fashion loop of several
Variable condenser fully
1620 kc
transformer, re -
on isolation
A3, A4
voice coil.
open.
Loop
2
CHASSIS MODEL: 120059
turns of wire and radiate
A5
Across
signal into loop of reAdjust for maxi-
voice coil.
open.
ceiver.
mum output.
Tune for
Across A6 Adjust for maximum voice coil. maximum output. 1-Voltage and resistance readings taken in a c.-d.c. position. 2-Voltage readings are in volts and resistance readings in ohms unless otherwise specified. 3-D -C voltage measurements are at 20,000 ohms per volt; a -c cottages measured at 1000 ohms per volt. 4-Socket connections are shown as bottom views. 5-Measured values are from socket pin to common negative. Loop
3
1400 kc
TUBE TYPE
PIN 1
1
1125
2 3
1T4 1S5 3Q4 117Z3
0 2.7D.C. 1.4DC
90DC 90DC
4.2DC
85DC
0
106DC
SYMBOL
4 5
PIN 2
PIN 4
PIN 3
PIN 6
PIN
7
-14.8DC
0
0
0
0
2.7DC 28.5DC 5.6DC
0.1DC
16DC 90DC
85DC
1.4DC 4.2DC 2.7DC 7DC
117AC
0
117AC
117DC
106DC
62DC 62DC 0.1DC
0
PIN 5
0
Oscillator Grid Voltages Are Measured !i Vacuum -Tube Voltmeter.
it
Si
Si
43
31
zi n if
II
15
a
a
n /
n
,Iwo
*0...
1. 45 ..
NY K
....t. '
--,
:
v
,,
,...-
_-
I
211
It
13
10
Pt
54
EE
0
0
105
304
i 0' li §1 - el" le -3..A '. ,
--i
®
®
,5182.2NCs
4
- ,:.....
%
0
A
-if-
SON
'",'1 C) '"C
®
0
42
"
:o t.:3
n`
..,%-,
2
..,-4
®
8,
41
...,
lour
,
_
-
'.')
25
it X
V yr
2r
.
' 4.. `, 4,-
13 1117
11
EE
F'115
OM LOP. 11.0
14
...
24
1t1r
40
,
..,
A:
11.
tr'41P4+.
)wl
I
g
n
.17*,
'-1
6
I
;r--,,---1
,J
7/472249 Tekotriot
0
re
GNCON USING
6 V.
i 7,--
-r WU, -'k
11723
.0.
., :P
t-,0- Tim,
.
/ I.
()
' .4..
.1.,issi lif ''.2C) 4
®
iii
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS l -f Alignment
EMERSON RADIO
Rotate the variable condenser to the minimum capacity
1.
MODELS: 570 - 574 - 580
position. 2.
Feed 455 kc to the grid (pin 6) of the 1R5 tube through a 0.01 mfd. condenser.
3.
Adjust the four i.f trimmer screws for maximum re sponse. (Clip the test signal lead to the stator of the
CHASSIS MODEL: 120064 Schematic Symbol
t Part No.
Cl, C2
900022
DESCRIPTION
larger capacity section of the variable condenser.)
Two -gang variable condenser
R -f Alignment
Part of Cl Trimmer
*C3 *C4
*C5, C6 *C7, C8
Part of C2 Trimmer Part of T1 Trimmer Part of T2 Trimmer
inches in diameter. This coil should be placed parallel to
0.0001 mfd. ceramic condenser 0.001 mfd., 200 volt condenser 0.005 mfd., 200 volt condenser 212 mmfd., ceramic condenser 0.001 mfd., 200 volt condenser 0.0001 mfd., ceramic condenser (Alternate part 928013) 920494 0.05 mfd., 200 volt condenser 0.02 mfd., 100 volt condenser 920120 925063 16 mfd., 100 volt electrolytic
C9 CIO C11 C12 C13 C14
928013 920497 920496 928104 920497 928010
C15 C16 C17
and in line with the receiver loop at a distance of approximately 15 to 20 inches.
920485 700019 708007 340970 340470 390025 351450 351330 351130 351250 340730 351330
LI
L2
RI R2 R3 R4 R5 R6 R7
R8 R9
Radiate a signal at 1620 kc, rotate the variable condenser to minimum capacity, and adjust the oscillator trimmer,
2.
on the smaller section of the variable condenser, for maximum response.
condenser
C18
Connect the test oscillator to a coil composed of three or four turns of wire wound in a circle approximately 12
I.
0.01 mfd., 100 volt condenser Loop antenna Loading coil 100,00 ohms, % watt resistor 820 ohms, watt resistor 1 meg., volume control
3.
Radiate a signal at 1420 kc, tune in the 1420 kc signal, and adjust the antenna trimmer, on the larger section of the variable condenser, for maximum response.
4.
Radiate a signal at 600 kc, set the dial indicator to 60, and adjust the oscillator coil core trimmer while rocking
1/2
the variable condenser for maximum response.
10 meg., 1/2 watt resistor 3.3 meg., 1/2 watt resistor 470,000 ohms, '/2 watt resistor 1.5 meg., '/2 watt resistor 10,000 ohms, 1/2 watt resistor 33 meg., 1/2 watt resistor
Return to 1620 kc and check alignment. If readjustment
5.
is
necessary, repeat Steps 2 to 4 until no further im-
provement is noted.
The following voltage readings are d -c measurements taken from B- (chassis) to the indicated tube -socket pin. A 1000 ohms -per -volt meter should be used for all readings except those indicated by an asterisk (*), which should be taken with a d -c vacuum -tube voltmeter. Take readings with the volume control set at minimum and the variable condenser closed. Use fresh batteries.
PIN NUMBER TUBE
2
1
3
4
*4;
IRS
60
35
1T4
60
35
1S5 59
1.5
3S4
*-0.2
*17
*-6.5
60
1T4
VI
L2 LI
CI
C3
*7-
6
5
*25
*-0.2
1.5
*-0.2 *-0.1
13 13
59
1.5 354 V40
135
V2
V3
00 0
C ID
C 96c
7
CII
0
7
0
71
0
018
R6
R7
00
0 to
0
(I OUTPUT TRANSFORMER MOUITED ON CHAMPS
R3 C13
C14
T C17
C's
R
2
OFF
67 it VOLT
e
C
30
BATTERY
DOOR SWITCH *SOWN IN 'OW POSITION, LID OPEN.
R9 THREE I
KILT k BATTERIES
co
0
0
IF=455 KC
6SA1
6V6
200 mmf,
200 mmf.
3
4
5
200 mmf.
2
200 mmf.
.1 mfd.
1
DUMMY ANTENNA
SIGNAL GENERATOR FREQUENCY
Tuning cap. fully open.
RADIO DIAL SETTING
Across voice coil.
METER
OUTPUT
Al, A2, A3, A4
chassis.
6001(C
1400KC 19
IP
1620KC
n
:,
chassis.
High side to ext. ant.
77
output.
maximum
Tune for
Tuning cap. fully open.
fully closed.
Tuning cap.
ii
17
A7
A6
77
17
z
0
Adjust outside turn of loop CD for maximum output.
,,
Adjust for maximum output
for minimum output.
Adjust for maximum output.
ADJUSTREMARKS
CHASSIS MODEL: 120012B
MODEL: 577
EMERSON RADIO
,,Adjust lead. Low side toA5
High side to Pin 8 (grid) of 6SA7. Low side to 455KC
SIGNAL GENERATOR COUPLING
For Alignment set volume control in maximum position; signal generator output just high enough to obtain reading.
0
62/
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Emerson Radio Models 573, 583, Chassis 120039B, Alignment To set pointer, turn tuning cap. fully dosed and set pointer 2-3/8" from left edge of dial backplate. This is the calibration
mark referred to below. Loop should be maintained in same relative position to chassis as when receiver is in cabinet.
Volume control should be at maximum position; output signal generator should be no higher than necessary to obtain an output reading. Use an insulated alignment schewdriver for adjusting. DUMMY ANTENNA
.1 mfd.
1
SIGNAL GENERATOR COUPLING High side to pin 8 (grid)
SIGNAL GENERATOR FREQUENCY
RADIO DIAL SETTING
4SSKC
Tuning cap. fully open.
of 6SA7. Low side to chassis.
.1 mfd.
2
OUTPUT
ADJUST
ME TER
Across voice coil.
REMARKS
Al, A2, A3, A4
Adjust for maximum output.
High side to ext. antenna lead. Low sale to chassis.
"I
Tuning cap.
/,
A3
Adjust for minimum output.
fully closed.
3
200 mmf.
,,
1400KC
5" from callbration mark.
"
A6
Adjust for maximum output.
4
200 mmf.
fl,
f,
Tune for maximum output.
"
A7
Adjust for maximum output.
600KC
7!
>9
,,
200 mmf.
5
Use adjusting turn In rear of loop. Adjust for max. output.
,
11
U
34
U
It
63
35
112
X
37
45
I
24
66
AI
65
5
6
4
7
61
A
51
50
41
15
52
43
55
11
.,
- -'7 ,
X -------11-
.42
59
.fl
'..
A
/_
...
-_
....-
..:
1
Pk
2
-
* 't .
1
'
i
.,',.._.
_
*
....
I/
X
25
45
44
4
13
12
11
I7
0
u
31
n
V
WI
4" 'r
I
-
,
.
wf
14
N
Ll
Al
54
3
56
5/
11
St
MODEL 583 SCHEMATIC SIMILAR EXCEPT TUNING EYE IS OMITTED ,,)
MI .
-
0
'-')
If-
...
ISM
'
,
1
to
-
®
12-
-T®
m
-
,..r
I
"
-2 :e
1
mil
Lb FICT1-. --.-2 '''' -
.i
in
6917
-
. .,.,..
.....
1
IF -4!.,,v, .2...
J.
_L
'..)
Hi
1-
.)
., ,
mr-, I
I
,,
Pi
' ISO/
,.
i
,
.,_ _1,
__
AS
(v)
1
- -1, .......
32
'
-
1
.. ,...
ct.).
.....
.2.
c.)
!) .f.
00
MODEL 573 SCHEMATIC
-
(i)
60 r\,
ii7V AC
100 MMF
ANT.
III
I
22 Kn.
6811
5
6
1
4700
2
\
75\ 22K%
6BA6
32.109
22 IL
00
45
1
T 6846
6
2
4700 S
.005 MF
V
100
J_
10.7mC
_ .01 MF
105 V.
5 Tube AC Superheterodyne FM Tuner
_1
- 13°
-/VVV \
_J
la_
I
In
O
(.1
n
K 6BE6
4 ME
27 K.O.
1500 MMF
j
795
CONNECTED WIRES
GROUND
K =1000 OHMS
NOTE:
T
_L .02 MF
2.2 MEG.n
1
16
6AL5
SCHEMATIC FADA RADIO 8 ELECTRIC CO,INC. BELLEVILLE, NEW JERSEY U.S.A.
MODEL
87 TO I09MC
O
0
2
220 K.n.
L
T
130
J
Ti
TUNING RANGE
.005 MF
MMF
100V 270
1114-
i0.7mC
X - FOR DETECTOR ALIGN MENT ONLY
68E6
I KI1
1V
5
boo v.
6BA6
680
F.M. AUDIO OUTPUT
4700
130 V.
'
0
1 Kn.
100 MMF
98 V.
L_
7 401
INPUT
PHONO.
23
32.13
Nom/
VAR. COND.
6BA6
I
I
I
N
Y 4.
0
5
795 SERIES
6AL5
-
11* ---
rc::
c,
1
u.
100 VT
MMF501
1
6
--MF
.005 ME 005
)(.;
1--
6BA6
L___J I
10.7mC
i 7 110 FA. 7
-L i
20 MF
82 MMF
i ...a.
los v.
6BE6
TYPE' 47
BROWN BEAD
T .01 MF
.
)
n --I
50 MMF
1500 MMF
V
105
50 MMF
1 Ks1
102 V
6BA6
Co
0
5/4
MdM
tri
z
D-3
D-3
Co
co
Ina
0
4:4
z
414
I
I
yI GROW100 1__1
EXT. 15C Al4tS1
lArt 1,41 ANSI e
rhIMIT g ,
EXT.
I
/
/
/
/
/
/
/
/
500
so.R.COND
IrIF
IT
220 -n-
1500/,
,0
12 AT 7 sev
_i
L-I2 90MC
R.F. F.M.
1500 KC
ANT. B.C.
105 MC
1---4
/
-/
/
II
21
i
ow* *mootMFC-2
I /--. - ..Z
top
470./1
.43-12 NNE
ALL VOLTAGE READINGS TAKEN WIN vT v IA AT HT V 60 CYCLE LINE AND SAND SWITCH IN EN POSITION
POSITION- 3- T.
SWITCH SHOWN IN POS.! MAIL COUNTER CLOCII WISE POS. POSITION - I - PHONO. POSITION - 2- BROADCAST BAND
/
R.F F.M.
.01MS
/
r
66E8
.
AIMS
OSC FM
GEIER
I2AT
CD
COW. BC RF EMS
01K
SALO
FM PET
10.7 MC
2 CH
TONE CONT.
SW ON
,
BC t
FM
AUL.
...SR
BALLAST
j_ GROUND
K KI000 OHMS
It -FOR DETECTOR ALIGNMENT ONLY
7r
F. M. - 87.6 MC. -108.4 MC.
B.C.- 534 KC. -I630 KC.
TUNING RANGE
FADA RADIO
SATS OBAK 60A6 25L6 2526
1ST POW IC °AVER OUTPUT RECTIFIER
BC DET F
2526 GT
-1---d-har
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS 128E6 ANT
J
6
2
0I MFD
®
22,00011
t
Ar
*-1
2
Cr
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5085
12AT6
1- 14>
I-
GNEI.
I'
128546
I ""
2
I MFD
2
0 15011
- 005
Dr
a
600V
10 MEG
6
.02
-0
I
I MEC
MFD.T
PILOT LIGHT *47
I.E. '55 KC.
35 Vi4
105-125 V.
A C - D.0
50 -60,--.
(St ON -01FF SWITCH
2 -T.
MODEL 5A3
12676
128E6
T20
129A6
5085
4
4
GAROD RADIO
351144
400V 4
DENOTES CONNECTIONS TO
3
4
3
3
100.0
4
3
100011 114
- CHASSIS
T20 MFD
ALL RESISTORS it WATT AND ALL PAPER CAPACITORS 200 VOLTS UNLESS OTVERWISt MARKED.
0 2.213
VOLUME CONTROL El SWITCH
8.200-1
0 1464 LOOP ANTENNA
30300 P M. SPEAKER 80 5.415I ELECTROLYTIC CAP 40- 40-20MFO
2 GANG VARIABLE COND.
0 1.259 1ST LF TRANSFORMER 0 L409 2ND I.F. TRANSFORMER
MODEL
0 1.402 -1 OSCILLATOR COIL
5A3
9.208 OUTPUT TRANSFORMER
/! I4A7
31,)
I2SQ7
_
2
2 0
0. 22,00011.
8)
CEO
2
I MEG IL
.02
MFD. T LAMP -447 105- 125 VOLTS
AC - DC
5
35Z5
50 - 60
o0a 12 SO7
-
7
DENOTES CONNECTIONS TO CHASSIS.
8
12 SA7
7
2
14A7
50L6
8
7
I
2
GAROD RADIO
3525 2
loon
37
100011 1W.
TO MFD.
150 V./
20 A1F117
MODEL 5A4
Cp 150V
WATT AND ALL PAPER CAPACITORS -200 VOLTS ALL RESISTORS
UNLESS OTHERWISE MARKED.
(1) F
455 K.C.
1
1.469 LOOP ASSEMBLY 2.163 2GANG VARIABLE COND. 1.259 1ST I. F. TRANSFORMER 1.409 2 ND. I.F. TRANSFORMER
/
(a/
8.201-3 30.318
VOLUME CONTROL 8 SWITCH P.M. 5" SPEAKER
5,400-8 ELECTROLYTIC CAP 40-4020MFD. 1.402-1 OSCILLATOR COIL 9.2 19
OUTPUT TRANSFORMER
35
ro
6!
TAP LIAO w
5
0
70
A
tli
FOR SO CYCLE CPWRATIO., OREM PICWO POWER .ND RECONAWCT IT TO SLACK-11LO". LEAD AT .11
ACTS
FN OPOLE
CAS, ARTENIIA
PRI
Si
SEC
DISCRIM
V I -GAGS
R F AMPLI
L 10
C 10
3RD. IF 495KC
5Y 3GT
10.7 MC
V2 - 68E6
To MP -r..4
Two rttcs
CIS
2-66E6
CONVF_RTER
...
S 3 MIS
RfOt
, A
2-14
AL/6
OAS LAW
VA -
IF UPL/
9,4,
0
IQ7 MC
c
SSD
,,,
C4/
/,
C./
-AA
V5.6
LIMITER
rT
Trimmer Location
1ST. IF 455 KC
AAA.
16C..1
r-1Nc
--says",-,..-wsr,s, ,......,
OTTOM OF WORST
PM ENO OF PLLM
COMMECTIC FOLLOWS
,........._,,-15
..4 it
-
re,- ::ACLET1: FM.,11.4 SOCAST
-503 T 011P ,
103i
r
2 ND. IF 455 KC
POMO MAI-AMPLIFEA 1
L
I
I
J
3.66
IF AMPLI
4PA NSA
11444T
CI6
®C12
0.44, 6MEAT AWN
CA 4
SAGS
A1606.1
LI
L4
E
L9
T
44-1141.
401YER OUTINT
O
O
O
RC62
M.
V6- 66SICT
AUDIO
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS General -Electric Models 376, 377, 378, Alignment Information (7)
NOTES IN CONNECTION WITH METER ALIGNMENT:
Use unmodulated signal. Connect 20,000 ohm -per -volt meter from junction of R29 and R41. (3) Connect 20,000 ohm -per -volt meter from grid pin 1 of (V5) 6AU6 limiter to chassis with a 200,000 -ohm resistor in series. The resistor must be connected directly to the grid to minimize
capacity loading and to isolate the meter from the i 4 voltage. Keep signal generator output down so that meter indicates not
more than, one volt at the grid (5 microamperes through 200,000 ohms) (Alignment Steps 7 through 13). Use 400 -cycle mqdulation (Steps 1, 2, 3, 15, 16, 17, and
For alignment of the standard band oscillator and r -f
trimmers, the input signal should be inductively coupled to the radio loop antenna by connecting a 4 -turn, 6 -inch diameter loop of bell wire across the signal generator terminals, and then locate the loop about one foot from the radio loop antenna to
(1) (2)
prevent possible errors in peak readings. The position of the
loop in respect to the radio loop antenna should not be changed during any one set of adjustments. Steps 15, 16, 17 and 18. (8) The lead from the signal generator must be kept as short as possible and it must be kept away from later stages to prevent regeneration. The signal may also be fed in to the tube pin con-
(4)nection from the top of the chassis to prevent regeneration. (9) A dummy antenna is a resistor in series with the hot lead of 18).
(5) Connect a standard output -meter across speaker voice coil. Turn volume control full on. Keep signal generator output down so that meter indicates not more than N watt output (1.26 volts) during alignment. (Steps 1, 2, 3, 15, 16, 17 and 18.) (6) Two oscillator settings will give response. The higher frequency response is the correct one; the other is the image response. If in doubt, start with the trimmer screw loosened completely and adjust for the first response.
the signal generator. The resistance of the resistor plus the termination impedance of the signal generator should equal 300 ohms. (10) If a dial scale is not available, index the dial pointer as follows: Turn the pointer to the left-hand limit of travel and
mark the dial plate at a reference edge of the pointer slide. Then
set the pointer by turning the dial knob until the indicated
dimension exists between the reference edge and the mark. ALIGNMENT CHART
STEP
SIGNAL GENERATOR
FREQUENCY
BAND DIAL SWITCH SETTING
SIGNAL INPUT POINT
SEE NOTE
ADJUST
REMARKS
AM I -F METER ALIGNMENT
4, 5
Adjust for max.
Peak C33
4, 5
Adjust for max.
Peak C23 and
4, 5
Adjust for max.
Discrim. Secondary for zero meter
1, 2
Apply 1 volt signal input.
*Signal
1, 2
*Detune signal generator to point of maximum meter
Peak C47 and
455 kc
Cony. grid directly thru .01 mfd
STD
455 kc
Cony. grid directly thru .01 mfd
STD
3
455 kc
Cony. grid directly thru .01 mfd
STD
4
10.7 mc
Pin 1 of VS (6AU6) thru .01 mf
FM
5
Detune aig- Pin 1 of V5 (6AU6) thru .01 mf nal generator
FM
6
As in Step 5 Pin 1 of V5 (6AU6) thru .01 mf
FM
Peak diacr. primary
1, 2
Adjust for max.
7
10.7 mc
Pin 1 of V4 (6AU6) thru .01 mf
FM
Peak C45 and
1, 3
Adjust for max.
8
10.7 mc
Pin 1 of V3 (6BA6) thru .01 mf
FM
C31 and C30
1, 3
Adjust for max.
9
10.7 mc
Pin 7 of V2 (613E6) thru .01 mf
FM
C21 and C20
1, 3, 8 Adjust for max.
1
2
C46
C22 FM DISCRIMINATOR AND I -F METER ALIGNMENT
....
Generator
reading.
C44
FM R -F MUM ALIGNMENT 10 11
12
13 14
98 mc
FM
Dipole terminals thru dummy antenna
FM For max. Dipole terminals thru dummy output antenna Repeat steps 10 and 11 until no further improvement in sensitivity. FM 198 mc !Dipole terminals thru dummy 198 mc antenna Repeat steps 10, 11, and 12. 98 mc
1
16 17 18
1500 kc
Inductively coupled
Peak C62
1, 3, 6, 9, 10
Peak L4 vane
1, 3, 9
3111- inches
AM 15
98 mc or
'Peak LI vane
1
1, 3, 9
R -F METER ALIGNMENT
STD
1500 kc or Peak C12 5 inches
4, 5, 7,
For max. Peak C16 output Repeat steps 15 and 16 until no further improvement in sensitivity. 1500 kc STD Inductively coupled Do not Peak C6 change from Step
4, 5, 7
1500 kc
Inductively coupled
1
STD
16
10
4, 5, 7
37
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS General -Electric Nbdels 376, 377, 378, Alignment continued AM I -F VISUAL ALIGNMENT 1
455 kc
20 kc at
Cony. grid directly pin 7 V2 (6BE6) thru .01 mf
AM
C47 and
c46.
*Adjust for max. amplitude and min. distortion of curve
4, 5
60 -cycle
on scope screen.
sweep 2
Same as Step 1
3
Same as Step Same as Step 1 and 2 1 and 2
Same as Step 1
5
6
(6BE6) thru .01 mf
Same as Step 4
Same as Step 4
4, 5
Same as Step 1.
AM
C23 and C22
4, 5
Same as Steps 1 and 2.
FM I -F VISUAL ALIGNMENT
10.7 mc t,3 Cony. grid directly pin 7 V2
mc at 60cycle sweep
C33
,
/ 4
AM
FM
C45 and C44
1, 2, 11
FM
C31 and C30
1, 2,
Adjust for max. amplitud... and min. distortion. Same as Step 4.
11
Same as Same as Steps 4 and 5 Steps 4 and 5
FM
C21 and C20
1, 2,
Same as Steps 4 and 5.
11
DISCRIMINATOR VISUAL ALIGNMENT 7
10.7 mc
Cony. grid directly pin 7 V2 (613E6) thru .01 mf
FM
Same as Step 7
Same as Step 7
FM
Same as Step 7
Same as Step 7
mc at 60cycle rate 8
9
.3
Primary of T5 discrim. trans-
1 , 3,
Secondary of
1, 3,
11
former T5
FM
Primary of T5
11
Adjust primary for max. amplitude.
Adjust secondary for vertical symmetry with respect to midpoint horizontal traces.
11
Adjust for straightest possible slope of straight line trace.
2, 6, 7, 8,
*Set dial pointer accurately, then adjust for steepest slope
1, 3,
FM R -F VISUAL ALIGNMENT
10
98 mc
fk Note 6
Dipole terminals then dummy antenna
FM
98 mc or 3
Adjust C625
in.
10 11
98 mc Note 1
Dipole terminals thru dummy antenna
FM
98 mc
Peak L4 vane
1, 2, 9, 10
98 mc Note 1
Dipole terminals thru dummy antenna
FM
98 mc
Peak LI tuning
1, 2,
of straight line trace on scope. Center response
curve on
scope, then peak for max. amplitude.
12
vane
Peak for max. amplitude.
10
AM R -F VISUAL ALIGNMENT
13
1500 kc
Note 6 14
STD
1500 kc or Adjust C12 5 in.
4, 6, 7
1500 kc
Antenna then 200 mmf
STD
1500 kc
Adjust C16
4, 5, 7, 9
1500 kc
Antenna thru 200 mmf
STD
1500 kc
Adjust C6
4, 5,
Note 5 15
Antenna then 200 mmf
Note 5
7
Adjust C12 for steepest slope of straight line trace on scope.
Adjust C16 for max. amplitude. t
Adjust C6 for max. amplitude.
NOTES IN CONNECTION WITH VISUAL ALIGNMENT TABLE:
Use FM signal modulated at 60 cps 1300 kc. Connect vertical plates of scope to the limiter grid (pin 1 of V5) (6AU6) through 200,000 ohm resistor. (3) Connect vertical plates of scope to the junction of R29 and R41 (FM audio) through 200,000 ohms. (4) Connect vertical plates of scope at junction of R13 and C28 (AM audio output) through 200,000 ohms. (5) Use FM signal modulated at 60 cps t 20 kc. (6) Use a 60 cycle amplitude modulated signal. (7) If a dial scale is not available, index the dial pointer as follows: Turn the pointer to the left-hand limit of travel and mark the dial plate at a reference edge of the pointer slide. Then set the pointer by turning dial knob until the indicated dimension exists between the reference edge and the mark. (1) (2)
(8) Two oscillator settings will give a response. The higher frequency response is the correct one, the other response is the image. If in doubt, start with the trimmer screw loosened completely and adjust for the first response. (9) In some cases tuning of the converter grid will cause "pull ing" of oscillator which will change the oscillator frequency. After centering the response curve on the scope, if peaking of L4 causes the response curve to move off of the screen it is necessary to realign the oscillator for calibration. (10) A dummy antenna is a resistor in series with the hot lead of the signal generator. The resistance of the resistor plus the termination impedance of the signal generator should equal 300 ohms. (11) Leads from the signal generator must be kept as short as possible and away from later stages to prevent regeneration. The signal may also be fed to the tube pin connection from the top of the chassis to prevent regeneration.
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS OCT P.F. AMP
I F AMPLIFIER 1251,7
TFA
COTSKA';
5 T
r --
-
3
REE
T
3p
19
1
NA 4
5,7
5
2211,
BLUE T
50L6 GT
.011 YfD
0.%
T3
at
T
POWER AMPLWER
12507
13
G9
GT
5
.02 MED
02 2A
_
_ 1SS ES
455 KG
3
2
RED
PI 4 47INEG
R7
470
15
VCL CONTRCL
VIPS,
2200
LB
2.2 MEG
330
-C113 TOOMFD
_Hr 5011FG
C20.1
4 OK
0510
FRONTGFCHASSIS
30
V4
%Fs' 1.F/"0
H7VELTS AC Ulf NO SOUL SPLIT MOLT/1MS SEASLICO BE TWEFN SOCXET
2507
TEIVANALS 010 B WITH 20,000 OHM PER VOLT METER
9
`KUM 0:14TR0. WAWA NMEICATES AC VOLTS
S1
12507
12507
7
2
12 SA7 501-6GT
35ZSGT/G
-Ss"
12917
2
I 50..6GT
2 7
7
2
7
G14 T.05 MED
VALUE OF ALL CAPACITORS ARE M.M.F UNLESS OTHERWISE
4P
td
SPEWED
I
I -F ALIGNMENT
Connect an output meter across the voice coil. Turn the volume control to maximum. Set test oscillator to 455 KC and keep the oscillator output as low as a readable meter reading will permit. Apply signal to the converter grid through a .05 mfd. capacitor
BOTTOM VIEW OF CHASSIS LI
LOOP .1,TIOY
0
and align progressively the trimmers in the 2nd and 1st I -F
0
transformer cans.
0 It -F ALIGNMENT
Apply the R -F alignment signals through a standard IRE dummy antenna to the primary on the loop. With the gang condenser wide open, align the oscillator trimmer (C3) to 1720 KC. Change the generator signal to 1500 KC, tune the receiver to the signal and peak the antenna trimmer (C1) for maximum output.
Tube and Trimmer Location
ELECTRIC
GENERAL
MODELS 102, 102W, 107, 107W, 114, 114W, 115, 115W
GENERAL c. ELECTRIC
MODEL 14
RECORD PLAYER V3
V2
VI
6507
6SC7
6V6GT BLUE
PLUG 8 JACK
.oi
.2,5
MAGNETIC PICK-UP PU
R14
C
05
C4
70K
C7
CB
TI
.02
R11
RI
R2
5603
3.3
MEG
1.0MEG
TONE
R?
270 C3
2OME6
719
05 R6 3.3
10
MEG
0I
100
R8 i BO K
SPKR
R12
RIO
f R4
08; =
019
1500
33K
R20 56K
2
P2
CIIB
J2 cc'
(''
20
`1T
The Model 14 Record Player consists of a 4 -tube amplifier , and manually -operated record player.
'4_
-..% -.A.-..
-v..--._-Nc..-\.-cc.-cc,c\_-.
-\_-,,-._-._
-...-..-..-..-..-..-..-%:..-._-...-...-...-..-...
V4 5Y3GT/G
-...-._ -
OR NEGATIVE SIDE
SI
(PART OF RII)
NOTE. CAPACITORS ORIENTED AS FOLLOWS, -4--
REDO YELLOW RED
115 VOLTS
PC
T2 j_
r -'65C7 6507
6V6
39
5.4
113
50L6GT
AG
120
1171/4
0
L_
1
Ack
SEC STOAT
bi -
1ST I -F
O
17 Ix
19
43
36 AC
66
0
PIP
CIO
005 If
0
24 AC
455 KC
00
12SK7
TUNING CONDENSER
T
TERMINALS AND B -
C4 vt3-15/3
C25 47
L
I
BLUE
inos C5
TRIMMERS
2ND I -F
470K
R2
,
"rC2, A
CONDITIONS OF TEST
12 AC
.
4°-15 4414
41,4
I. MEASURED AT 117 VOLTS LINE ON A 20,000 OHMS PER VOLT METER. 2. ALL VOLTAGES ARE D -C UNLESS NOTED 3. READINGS TAKEN BETWEEN TUBE PIN
12507
C4 (TOP) 1500 KC
OSC. TRIMMER
455 KC
TRIMMERS
GREEN
0/
1C117
I
1
-1
12 SA7
05C--CONV
VIEWED FROM BOTTOM OF CHASSIS
117AC
NAG
21
35Z5GT
65 AC
I
PRI START
PIP
ODI
CI
I-
1
CAPACITY IN We UNLESS OTHERWISE NOTED
12SA7
O
at.
i
12
12SA7
50L6GT
35Z5GT
105-125 V 60.1., AC
RIO
25 MEG
---WHITE
RD. -3 I
GREEN
Be
24AD
BY 90V
B -BUS
AVC
K
-43-Kr
140 "
TI
88
L
r
1%
C15
GREEN
voirrE59>-ii
TI
FOR
4,
111111...
4
3
2
1
Step
MODELS 60 AND 62
CLOCK -RADIO
351507
RECTIFIER
15
¶"1
.
Antenna Post in series with 200 mmf. cap.
Antenna Poet in eerie. with 200 mmf. cap.
grid (8) in series with 0.05 mf. cap.
12SK7 grid (4) in series with 0.05 mf. cap.
1500 kc
1500 kc
455 kc
455 kc
Setting
Test Osc.
1500 kc
1500 kc
1600 kc
1600 kc
Dial Drum Setting
ALIGNMENT CHART Connect Test
12SA7
501.507
123411
501.1167
POWER OUTPUT
IE3A7
12507
Oscillator to-
ELECTRIC
22
CI
12507
DET B AUDIO
SERVICE DATA
GENERAL
CLOCK ROTOR B SWITCH
r
14)
005 MP
12917
for
C3 (antenna)
C4 (oscillator)
mere, C8 and C9
let i-f trans. trim -
mere, C14 C15
and
LSI
2nd i-f trans. trim -
Maximtun Output
Adjust Trimmers
RED
Pi
r12
0
V1
z
trl
1-3
a
1-3
0
ett
Dig
0
a
TO
$3
mOTigLe.c,
PMCM0
Note:
ous nun
L__
I
1.011.11.
CI x
J3
PNONO MOTOR
CONNECTIONS ONLY
FOR 50 CYCLE
K
R
vs
i
140,1.
nected to pin 3 instead of
pin 2 of 35Z5-GT.
C4
S3
0/.0
P3
marr
On Model 118, it is removed and pin 5 of 35Z5-GT is con-
07
C6
248lE
455 KC \
0
CT
1500 K G
455 065 KC L
ANT TRIMMER (ON LOOP)
7
I
I
403. ,
-=-
5
mcal T.;
4
AIMF
3,300
015
C23
470K
R7
C38
RIG
68K
3.3MEG.
R6
6507
C2 (Apt.).
C12 (Ose.);
C4 and C5 Readjust C6 and C7
686
R14
\
St
ASMF
615
*CS
I5'
C24 .01AF
3.3 MEG
R17
2.2MEG.
R9
RED. L _
:c.
r
RIO 100K
CS 005
Pa
a
J2
G 26
cr)0
00z
1/49TE
PG d-222r,r1.5F
C19 .008MF
2711
19
220K
RIO
T2
ass..., St-,
4.13LUE
VVVV\."--
LF ue.CA2
-45
4
TiREEN 3
12587
6.88E0
ie
BLACK
340
GREEN
GSC7 ORANGE
8
0
IL,to
35Z SGT
12
50L6GT
SK7
tI4A
R12
150
oo N5OMF
.003
X VOL. G
R3 47011
.OIMF
330
Kgr 21RES.
RII
270K
R2
GB
.4.220
cs
50L6GT
3
128E6
12507
1,200
1,2
wain
,EJ114-4..
0E07
CO .00SMF
119M and 119W
"-BLUE
LSI
MODELS 118, 119W and 119M
FOR
SERVICE DATA
C/1
4:4
0
BBB
T/2o
0
40
0
ELECTRIC 414
RADIO
GENERAL
GI3
GREEN
1
12507
voice coil terminals. The low side of the test oscillator should be connected to B minus; the high side should be connected as indicated in the Alignment Chart.
02
INK
1500 kc
-
C6 and C7
Adjust Trimmers For Max. Output
trimmers are shown in Figure 3. The output meter should be connected across the loudspeaker
1040
-
1500 kc
455 kc
126E6 grid (Pin 7) in series with .05 mf.
Blue wire on loop in series with 200 ulna. end 470 ohms.
455 Igo
Salting
Dial Salting
* Rock gang condenser when making alignment.
3
Test
Oscillator
125K7 grid (Pin 4) In series with .05 ml.
Oscillator Te:
Conned Test-
The oscillator trimmer is accessible by tilting the chassis slightly in the cabinet. T,he antenna trimmer is on the loop and is accessible from the rear of the cabinet. The locations of these
46LUE
El:7
226
RI
128E6
C12
1500KC
OSC.
SECTION
ANT SECTION
2
1
Map
AUGNMENT CHART
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS GENERAL ELECTRIC ALIGNMENT PROCEDURE
RADIO
AUGNMENT FREQUENCIES:
SERVICE DATA
455 kc
I -F R -F
1725 kc and 1500 kc The location of all trimmers is shown in Figure 1.
FOR
MODEL 113
I -F AUGNMENT:
Connect an output meter across the voice coil. Turn the volume control to maximum. Set test oscillator to 455 kc and keep
CABINET:
OVER-ALL DIMENSION&
the oscillator output as low as a readable meter reading will permit. Apply signal to the converter grid through a .05 mfd.
Height Width Depth
capacitor and align progressively the trimmers in the 2nd and 1st i-f transformer cans. .f.)°
6 in. 9
in.
4% in.
ELECTRICAL RATING:
R -F AUGNMENT:
Voltage
Apply the r -f alignment signals through a standard IRE dummy
105 125 v. AC or DC 40-60 cps 28 watts
Frequency on AC Wattage (at 117 volts)
antenna to C9. With the gang condenser wide open, align the oscillator trimmer (C11) to 1725 kc. Change the generator signal
to 1500 kc, tune the receiver to the signal, and peak antenna
OPERATING FREQUENCIES:
trimmer (C9) for maximum output.
Broadcast Band
PRECAUTION:
.540-1725 kc
Intermediate Frequency
If the signal generator is a -c operated, use an isolating transformer between the power supply and the radio receiver power input. The use of an isolating capacitor is not recommended, as a -c through the capacitor will introduce hum modulArtion and/or create the possibility of a burned -out signal generator attenuator.
455 kc
LOUDSPEAKER
"ALNICO V" MAGNET DYNAMIC
Outside Cone Diameter Voice Coil Impedance (400 cycles)
4 in. 3.5 ohms
TUBES COMPLEMENT:
Converter -Oscillator . I -F Amplifier
LI
12SA7 12SK7 I2SQ7
Detector, AVC Audio Power Output
50L6GT 35W4
Rectifier .
FRONT OFOHASStS 117 VOLTS AC LINE. NO SIGNAL INPUT VOLTAGES MEASURED BETWEEN SOCKET
TERMINALS AND B- WITH 20,000 OW PER VOLT METER VOLUME CONTROL MitIMUSA
*INDICATES AC VOLTS
12507
Tube and Trimmer Location t2SA7
BOTTOM VIEW OF CHASSIS .01
BLUE
12SK7 BLUE GREEN
Ifl
12507
LI
CA T
GREEN
L3_
8
,C
22
C17
RII
4 7K
I
L4
RB
8
-78R6
R4
(HC19-
470K
a
SPKR.
2 R3
TI 5
150
180`)
r_LpAA4cE.
YELLOW
C20
_t_ C 7
100
120
22MEG,
w CII
-02 3
0 Cl2
'5
7
z
.05
3
C3 C
cloa?1,4 6 72
,C9
50L6 GT
C5
330
C6 .005
R7 .5PAEG.
cr
cr
35 A44
35 W4
42
50LEGT 4
a 3
7
RI
R2 -I500
22
a A C2B
12,07
ire SI
125A7
12SK7
40MF0. 40 MF D.
C 18
,05
Yal
6
ANTENNA
®
sz
1
1,
LooT
_J
20
I
lU
COIL
OSC
C6
1
'8";
0
L3
455 kc 10.7 mc
MODELS 210, 211, 212
FOR
SERVICE DATA
RADIO
C1
540-1600 kc 88-108 mc
SAND SW
os..
3
Cy
GENERAL g ELECTRIC
FM
AM
Ft
2,
T FAITE
INTERMEDIATE FREQUENCIES:
FM
AM
TUNING BAND:
NNW UNLESS OTNERWISE SMOKE/
c-1
3L._
ALL GANAGITOR VALVES DESIGNATED IN
NOTE
.1
ANTENNA
NO 04
Ge
7.1
LS
COO
C13
EF
BAND Sw
2)1
FN
CI
me.b.
R.
2 211E6
L
C10
vb
C ma
35 B5 OUTPUT
GERNEE1E0 10 P11.11 .OF
R9
_
Or
_J
I
X.
LE
0C/41
T71k_
Or
T4
3RD F. I!
044
O4 )OMC EADVELO
29
1
ELECTROLYTIC
DRY
u2
CON
SW
0...FREER V2 /26E6
17.
10
69*
RH
C
L.
VA -4046
LIMIER
L9
DENTROLJ
CUB
2 MEG
35135
#29
3540
7
C__Vg3
v6
S0 4-11c5
3.0
C29
F-1
11/
R16
4
370
Nzz
00.3 le
/006
E.105'
G.0
/I 'DT kW
Sr.:0
GONER
ESE
Auf340
I '039
Ar
dd
FT
FM-RF
IC370
r71
70
2
TRIMMER
BC OSC.
TRIMMER
7730
IC37C
/s7 AA.O.ArLiNER
DISCAMINATOR 10.1 DETECTOR AND
FM OSC. TRIMMER C18
CON
tr-
DiSCIN4AT,ATOR
OuTPuT
v7
35.4
0j \AM
afTh
0 FM [1ST
Ti
RED TW/ER
v6 35115
CI3
CII
CB
AI
0
0
1-3th
pvi
1-3
0U)
CD
rti
tO
0
c
3
5
a TO PINTk3 IRS
a cis acie
TO GO (4761111F)
YELLOW DOT
2 2 MEG
2
R8 33K
455 KC
1125 converter
Inductively coupled
4
remove
4°
^
03
C14
el,f-
SI A
C2A
1:12
C7
C1B
closed;
Transformer Ti.
Iron cores of I -F
1500 KC C15' C16
550 KC
550 KC
SR
22
RI
CI6
10K
RIO
7 R9 100K
IR5
C6
\
4°
C2B
2700
R
17
.
NEW
PRONG END
.05
C3 .-
R4
C2C
7
5
3V4
.05
R5
1
470K
R7
CIO
.0
7
T2
174.
I
5
.05
0 1.7
7 33
MEG
RI7
174
090- CONV
IRS
-610.12
1.7
20 90.0 430 57.0
00
65
07
RF AMPL
0
7.0
37.5
3.3
flo
RI6 22 MEG
6
3V4
OUTPUT
400
I. RED
BLUE
T3
0 67.0
5.0
I.i
IF AMPL
174
90.0
5.0
7.4
8.9
0-
10.0
0 3V4
145
0
DETS'AUDIO
OUTPUT
30 -90.0
10 r-90.0
P
NOTE: ALL CAPACITIES ARE IN MFD. UNLESS OTHERWISE INDICATED
Bt 90V.
22 0 MMF
CI IC
TOK
RIS
.005
C IID
BOTTOM VIEW OF CHASSIS
470
I
IS5
4.
Cl2 -
R14 MEG
(- .005
.002CHA
40
R6
7
33
3.3
1
5
RI3
c2
0
155
DET. El AUDIO
TOP VIEW
LSI
+9v,
DC VOLTAGES TO GROUND UNLESS OTHERWISE SPECIFIED ALL RATINGSARE A.0 OPERATION MEASURED WITH REFERENCE TO B VOLTAGE IS MEASURED WITH 20,000 OHMS PER VOLT METER
7
IRS
MMF rl
220
CI1B
RI2 2.2 MEG
I8
C4
1T4
RF
CI9
T.
5
1500
7
IF
IT4
GENERAL ELECTRIC
/
1T4
IF -AMPLI.
PL I
3.3M
RI9
.05
C8
-C9
SIB°
TI
MODEL 150
2300
R3
5600
RII
MMF
47
OSC.- CONY.
Adjust for Max. Output Iron cores of I -F Transformer T2.
C5 IOOMMF
* Chassis in cabinet and cabinet back (with loop) plug button to adjust'Cl5.
1500 KC
Repeat Steps 1 aid 2.
grid in series with .05 mfd.
455 KC
1T4 I -F grid in series with .05 mfd.
3
2
1
ALIGNMENT CHART Test-Osc. Pointer Step Connected to: Test-Osc. Setting Setting
LE
OSG-COIL
AC
CPP
GIB 110111
TO RIO (AVG)
TOR. ViT
-'
330 MMF
I
021
RF- AMPLI. IT4
rn
0
tv
0
tl
"Z
3{
o
0
0
tni
Slut
I
13.CAST
ANTENNA
470
3
ARE IN OMPAS
oAFT
o
morco...../'
I
4
MCP
22 'AG
638
lA
Re
L6
22 MEG
R34
470
6465
NANrIFICR
,45
470
:742 COIN
Ti.
R5
224
G16
Le
To R.RTCN
Standard Broadcast FM
INTERMEDIATE FREQUENCY:
Standard Broadcast FM
455 kc 10.7 mc
540-1600 kc 88-108 mc
while on FM, guillotine tuners are used to tune the antenna, r -f, and oscillator stages. The set employs three i-f transformers. Each transformer is a composite 455 kc and 10.7 mc transformer. The discriminator circuit is a standard Armstrong type with the primary and secondary of the discriminator transformer being slug tuned instead of trimmer capacitor tuned. The power line antenna is used when there is no external dipole and is utilized by attaching the blue wire on the cabinet back to the top dipole terminal. This should be disconnected when a dipole is used. For best reception with a power line antenna, the power cord should not be coiled up.
broadcast, a conventional gang condenser is used for tuning,
TUNING BAND:
10 1
XFM
'69
I
1
o
w
T2
1 g
220
R7
1
O
027
05
G26
RIO
2526GT
836
90
RI3
12
t C41
SERVICE DATA
7 111
MODELS 356, 357 AND 358
FOR
c70
C42 -2RAt_cs,
014
si
1004
R18
MF
045
4
BC:* FM
ELECTRIC
LIS
RECTIFIER
RADIO
RI7
474 MAN%
IVJ474
1000
MAN.
4.90V
350
82>
6806
220% oR
OWEN
V/
210 IF MARL
470
Iii4
T3
AIMAT
68
68a6
ST I AWL, V3
.M.AM
MEG
22
SIG
1
GENERAL
AVG
I I'''4--' -''''-_1
Ge
I"'
.-IP5
1_4
r FM OCKF
:L7
C
Two TVRES
AWN.
L4
. . F',3
66E6
OSCILLATOR GCNVERTER V2
CIL__Olsa .
The Models 356, 357 and 358 are alike except for cabinets. On
II 000, I.0, 226. 22,000 OHMS
RESISTOR VALUES
CAPACITOR 441109 ARE IN 5880 MESS NOTED .
170
FM °MCI(
RF
7
2
COO
224
C48A
6.8
IRe
F
107
47'
R24
330
R25
II
C488
c_.
_,y00
50
R27
MOO CUTPU 97 250661
6134
R29
a
C480
I
VgICOMP!.
ry
331
330
L
30 4704
- AIWA
R28
1704
-I
-I
15
lat-
'oTtic ;r
i-
nu
1-3
O
:72 -3
rn
BMMB
0hi
UI
11
0
0
vMM
147 Z
...8
65663
AM DETECTOR FM DISCRIMINATOR ST ALDO
Model 356-Mahogany Plastic Model 357-Ivory Plastic
B r 120V
4704
22
R32
6806
VS
FM LIMITER
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
THE B. F. GOODRICH CO. Models 925°5 92506 VOLTAGE DATA (2SJ7
35Z5GT
-1.5
I2SK7
no&c.
0
36
AL
117A.C.
83
88
88
12SQ7
0
10 A.0
0
0 135
S4
A.C.
49
12 A.C.
-1.6
0 0
24 A.C.
0 0
0
AG
se
84
I2SA7
Measured on a 117 Volt AC, line. Dial turned to low frequency end, no
0
46
A.C.
0
signal.
-?
0
Measured with Vacuum Tube voltmeter.
88
n
-II
0
drawing).
1211.C.
55
0
134 A.C.
110
24
Readings made between point indicated and Volume Control Lug (Point "X" on
35L6GT
A second voltage reading Is shown
X
made with a 1000 ohm -per -volt meter when use of this instrument would result in appreciably lower readings.
VOLUME CONTROL
FRONT OF CHASSIS
°
no
Bottom View of Chassis, Showing Voltages
REPLACEMENT PARTS RESISTORS Symbol RI.. 10,000 Ohms, 1/2 Watt R2.. 10 Megohms, V2 Watt h3.. 22.000 Ohms, V2 Watt 54.. 100 Ohms, 1/2 Watt 55.. 1 Me ohm, V2 Watt R6. 1/2 Megohm, Volume Control Switch
Part No.
60B 8-106 60B 8-223 60B 8.101 60B 8-105
75B 1-6 60B 8-475 60B 8-274 60B 8-474 60B 8-151 60B 28-3 60B 28-2 60B 8-154
58.. 270,000 Ohms, V2 Watt 59.. 470,000 Ohms. V2 Watt RIO. 150 Ohms, V2 Watt 511. 33 Ohms, I Watt 512. 1,000 Ohms, 1 Watt 513. 150,000 Ohms, 1/2 Watt
CONDENSERS Symbol
Part No. Cl.. 785 tumid., -.1:5%, Silver Mom. 65B 1-8
C2.. 250 mmfd., Mica 65B 7-22 C3.. .02 mid., 400 Volts, Paper... 64B 1-24 C4.. 50 mmfd., Mica 65B 7-11 0
to 420 mmfd. 1
68A 18
CS)). 0 to 108 mmfd. J Gang
EXT. ANT.
69C 44
L3.. Oscillator Coil T1.. Transformer, Output T2.. Transformer, 1st I.F T3.. Transformer, 2nd I.F.
69A 43 98A 4 72B 50 72B 51
Part No.
I2SA7 IST. DET.OSC.
0117.0d
L2
X22C3.1
15A 14
Mahogany (Model 92506) Knob, Ivory (Model 92505)
Screw, Set; 8/32x1/8" (Dial Drum)..1A 5-58 Shaft, Tuning 28A 1-1 Slug, R.F. Iron Core (with wire)....7113 1-2 Socket, Octal Tube 87A 10-2 Speaker (5" PM) and Transformer 78B 4-4 Spring, Tension (Dial) 19B 1- 3 Spring, Lever Arm (Rr.) 19A 4 Spacer, T (R.F) 29A 2-3-21 Stud, Slug Adj. (R.F.) 27A 4 Washer, C (Tuning Shaft) 4A 4-6
I2SK7
I2SQ7
35L6GT-G
DET. IST. AUD.
OUTPUT 171
'T'FI-
5
30
051 1 _to L3
R
RS
C9
VOL.
IR3 C8
CONT
RIO
R6 R9
R7
/
R4
T c7
35Z5GT-G
OSCILLATOR COIL
RECTIFIER
CHASSIS GROUND -4'
I.F.455 K.C.
SLANE
5
RII
47
STANT
46
END
RI2
MAZDA
4.5A
CI3o 3C
33A 7-2 33A 7-1 A1050 81A 1-8 82A 2-3 25A 13-1 17A 1-3
Lever Arm Assembly (R2)
R2
soj
//celz
340 8-2 18A 2 50A 1-3 69C 44
Washer, Spring (Tuning Shaft)....4A 6-3-0
, T2
Si
13A 1-2-2 34D 8-1
Cover, Back (Ind. Loop Antenna) Dial Scale, Glass 2113 10-2 Drum and Cam Assembly A1049
Pointer Pulley, Fibre; 1/211/2" OD
MISCELLANEOUS Description Background, Dial
71 XT. ND.
Buttons, Snap (for R.F. Coil) Cabinet, Ivory (Model 92505) Cabinet, Mahogany (Model 92506) Clip, Dial Glass Cord, Dial
Pilot Light, No. 47 Pilot Light Socket and Leads
COILS & TRANSFORMERS
R.F. AMP
/
64A 2-2 .64B 1-22
Ll.. Loop Antenna
Bracket Plate, Loop Retainer
;RI
67A 10
C14. .18 mfd,, 200 Volts, Paper C15. .05 mfd., 400 Volts, Paper.
I2SJ7
LI
64B 1-30 64B 1-22 65B 7-22 64B 1-25 653 7-27 64B 1-25 643 1-24
&Knob, BOB 8.103
117.. 4.7 Megohms, 1/2 Watt
C5a .
C6.. .1 mfd., 200 Volts, Paper C7.. .05 mfd. 400 Volts, Paper C8.. 260 =dd. Mica C9.. .01 rafd.,400 Volts, Paper C10. 500 mmfd., Mica Cll. .01 mfd., 400 Volts, Paper C12. .02 mid., 400 Volts, Paper C13a 50 told., 150 Volts Cl3b 30 mfd., 150 Volts} Elect
-10 SWI
Cl3b R13
15
TIP
00 12507
t4
Oct
6
6O
125A7
125J7
12587
35L6GT
m-VVVV1--,
014
NOTE
DENOTES MECHANICAL WRING
LUGS ON PICTORIAL VIEWS
(Ti TO T,, )IDENTIFY CORRESPONDING TERMINAL
1011 FRONT PANEL)
BAND SWITCH ANON
I
N.R.1.5
VI
Wi Ear
WAFER FOR
0
9
WAFER FOR
12
BANDSW,TCH 5-.
MODEL S-40 A
22
NUMERALS AT BANDSwITOI (Si) AND LETTERS AT ANTENNA, MIXER AND OSCILLATOR TRANSFORMERS
The Hallicrafters
f1
lar
RESISTANCE VALUES ARE IN ONIS,MICA CAPACITOR VALUES ARE IN MOAT, PAPER CAPACITOR VALUES ARE IN DECSIAL EOUIVALENTS OF MED, ELECTROLYTIC CAPACITOR VALUES ARE IN RFD.
POSITION FOR SAND 4.
WAND SW TCH B -I IS SNOWS IN
TS,
V,
V2
s
WAFER FOR
6
o
891 26o
0, 03g0 1100 70 6.AAC
O 50
V3
(ENO NE AREST CHAsSE REAR APRON,
10,000
6567 R.
4.
V2
POSITION I
V4 65K7
TUBE TERMINAL VOLTAGES (PIN VIEW)
PI
SWITCH 541
TO HEATERS
11;orsTtin
Vs 65K7
LW
TO HEATERS
5
6607
525
044
VIEW
6J5
Ve
260
SACINTING PLUS PL, MUST SE IN SOCKEE SO, FOR At. OPERATION.
ve 6F6-6
C
-NW
260
SO2
4-LOw
110
60A0
110
0 NW
V5
V6
V7
0
140
VB
1.05
-.12
.3 AC
350
325AC
Vg
350
325AC
AS FOLLOWS:STANDBY/RECEIVE SWITCH AT RECEIVE 1 AVC ,NOISE LIMITER AT ON AM /C V/ SWITCH AT "OW; SENSITIVITY AND VOLUME CONTROLS FULL CLOCKWISE ;TUNING ,PITCH CONTROL AND TONE CONTROLS IN ANY POSITION AS THEY DO NOT AFFECT READINGS.
245
N.H.
01,
3-NECARI1
I
*" S METER SWITCH CLOSED (MAX.CLOCKWISE) Nn-NOT READABLE WITH METER USED. ALL READINGS TAKEN AT Ill V. AC LINE VOLTAGE ;WITH 20,000 OHM,VOLT METER ; NO SIGNAL BEING RECEIVED; CONTROLS SET
ALL VOLTAGES ARE POSITIVE DC UNLESS OTHERWISE SPECIFIED
cec
it
V4
II
icre
_PP.
6617
z
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS The Hallicrafters Co. MODEL S-40 A 0 C2I
EQUIPMENT: 1. Signal Generator capable of the ranges indicated in
ALIGNMENT
-v
the Alignment Chart, including a 400 cycle audio modulator. 2. Output meter capable of handling 1.5 watts of audio power. 3. Standard RMA dummy consisting of a 200 mmf con-
-
shunted by a 400 mmf condenser in series with a 400 ohm carbon resistor.
ma
Zr
i
4. Non-metallic screw driver. CONNECTIONS: Connect the Sig. Gen. "cold" lead to the receiver's chassis; the "hot" lead is connected as ek indicated in the Chart. Connect the output meter across the speaker voice coil. Caution: Set the meter at a sufficiently high range to prevent possible damage from overload.
Stator plates of center sect. of tuning gang
0
t1 :
-
_. %.
_
oit .
c,
0 lo 0
-.e.
1
..°
-
'
''''
._
,-
'Lae '
x. --,:___In,-
.
17 -._*
,
CI9
0 c,,
-
..
c,
............
.
.
.
P
.
-
,.)-.--
.
-
,. ii
.
' .4
,
........
$
1
C.
fop and bottom views of th receiver
TONE control at "HIGH".
locating slugs, padders and trimmer*
DUMMY ANT. CONNECTION OF IN SERIES SIG. GENERATOR SIGNAL GEN. FREQUENCY WITH SIG. OUTPUT TO SETTING GENERATOR RECEIVER
10
-
c,s
CW/AM switch at "AM" (except for BFO adjustment).0
-*
,
_
ti, -
warm up period, set the receiver's control as follows: SENSITIVITY control at full clockwise (maximum). VOLUME control at full clockwise (maximum).
None
' '-
C28
c,,
.
i
,
,
CONTROL SETTINGS: After allowing about a ten minute
A.V.C. switch at "OFF." NOISE LIMITER switch at "OFF."
--i
C29
,
Ft
11111oiarM.At
denser in series with a 20uh r.f choke which is
C22
BAND SWITCH SETTING
RECEIVER DIAL
SETTING
ADJUST SLUG,
PADDER, OR TRIMMER NO.
IF ADJUSTMENT 1000 kc 3 (both) 2 (both) 1 (both)
455 kc
DESCRIPTION
0
C.
C
0
TYPE OF ADJUSTMENT -MAKE ADJUSTMENT STEP FOR:
NO.
3rd IF 2nd IF 1st IF
Maximum output 1 Maximum output 2 Maximum output 3 Repeat steps 1, 2 and 3 BFO ADJUSTMENT-NOTE: Turn off Sig. Gen. 400 cycle modulation; set CW/AM switch at "CW"; remove Pitch Control knob adjust slotted screw shaft. None Stator plates of 455 kc 1000 kc T-17 slug BFO slug Zero beat 4 center sect. of (See Fig. 3 for tuning gang location) BAND #4 ADJUSTMENT-NOTE: Make sure 400 cycle audio modulator is turned on; AM/CW switch should be at"AM. STANDARD "Al" on antenna 36 mc 36 mc C-19 Osc. Trimmer Maximum output S RMA Dummy strip 18 mc 18 mc S Osc. Slug Maximum output and 6 repeat step 5 36 mc 36 mc tC-1 RF Trimmer Maximum output 7 36 mc 36 mc tC-12 Mix.Trimmer Maximum output 8 18 mc 18 mc RF Slug t5 Maximum output and 9 repeat step 7 18 mc 18 mc 1.6 Mix Slug Maximum output and 10 repeat step 8 BAND #3 ADJUSTMENT STANDARD "A1" on antenna 14 mc 14 mc C-20 Osc. Trimmer Maximum output .11 RMA Dummy strip 10 Inc 10 mc 9 Osc. Slug Maximum output and 12 repeat step 11 14 mc 14 mc RE Trimmer tC-2 Maximum output 13 14 mc 14 mc Mix. Trimmer Maximum output tC-13 7 me 7 mc RF Slug 4 Maximum output and 14 repeat step 13 15 7 mc 7 mc Mix. Slug 't 7 Maximum output and 16
t
repeat step 14
BAND #2 ADJUSTMENT
STANDARD "A 1" on antenna RMA Dummy strip
5 mc 3 mc
5 mc 3 mc
C-21
5 mc 5 mc
C-3 C-14
Osc. Trimmer
Maximum output Maximum output and repeat step 17 Maximum output Maximum output
17
Maximum output
21
1500 kc 1500 kc C-4 RE Trimmer Maximtim output 1500 kc 1500 kc C-15 Mix. Trimmer Maximum output *It may be necessary to repeat the indicated adjustments several times. tRock the main tuning capacitor slightly (turn back and forth) when making these adjustments.
23 24
5 mc S mc
STANDARD "Al" on antenna RMA Dummy strip
48
"2"
1500 kc 600 kc
11
BAND #,1 ADJUSTMENT 1500 kc C-22 600 kc C-25
Osc. Slug
RE Trimmer Mix. Trimmer
Osc. Trimmer Osc. Padder
18
19
20
Maximum output and 22 repeat step 21
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Hoffman Models C503 and C513 are electrically identical with Models B503 and B513 respectively, except for the following:
oRADIO Coan R
1. Push-pull parallel 6K6's are used in the output stage instead of push-pull 6V6's.
2. An "Entertainment Panel" has been wired into the tuner chassis to provide microphone input, a speaker
P.
off -on switch, a pillow speaker plug, and an auxiliary
Dhono input. 3. A resistance -capacity filter has been inserted in the B -plus line feeding the phase inverter stage (see RI 11 and C110. Dower supply schematic)
Models B503,B513, Chassis 115 TUNING RANGES:
Band "A" Band "B" Band "C" Intermediate Frequency Power Supply
540 Kc to 1600-Kc. 5.6 MC to 10.4 Mc. 9.4 Mc to 19.4 Mc
4. On the recorder amplifier the screen dropping resistor (R111) has been changed from .1 meg to 2.2 meg and the cathode resistor (R2) for this stage changed from
455 Kc 115V. A.C., 50-60 C.P.S.
2200 ohms to 4700 ohms.
TUNER CHASSIS SYMBOL
CS -C6
C7, Cl, C9 CIO, C11, C12 C13, C14, C15 CI0 C17, CIS, CI9 C20 C21
HOFFMAN Ho
DESCRIPTION
ClCi, CI -C4,
Cu2
C21. C24, C25
Tlireo-SwoNei Variabie with Split Stator
I160-260, 160-260, 160-260 Meal., Three-locHoo TA...., Asaowehly TN. -Nation Trimmer Aseentbly Thrite-Soction TrIaMe. Assombly
110-560 Mod., Polder, Saul "A" .05 MN., 200 VOA Tobelar Papa.
500 /NAL .5% SilNi Mica
47 Mani., - 10% UNA .05 MIA, 400 Volt, Twbular Paper TOO MIN., - 20% MiN
1050 Mad., S% Mica
COO, C34
10 MIA 450 Volt, Tithe!. Electrolytic .01 Mkt., 400 Volt Tubular Ps,.
C31 C39, COO
C41. C42, C43 C44
.S MU. 200 Volt Tubular Paper .02 MN., 400 Volt, Tubular Paper
20-20.20 MN. 450.450 25V. Itiettf041k .001 MN., 600 Volk Tubular Pamir
COO
.01 MN, 600 V. Tubular Paper, Metal Can. 330 Maid. . 5% Mica 650 Mnil. 5% Mica
LI
LSO, Antenna
C45
COIL C47 L2
Owiliator Coll !Bawl ".4.-i Owilla. Coil i Banda "I" and "C",
1.5 1-5
Cholie-laws 11440 12" Loudspeaker i Electrodywainicl .1 ehin 20% IAN,.
U. L4 RI
22,000 Oho
12., 13, R4
2.2 Megishini 10,000 Ohm 10 Megohni
15 R6 R7
117 1114, R19 R20 R21
122, 323, R24 125
4502 4503 4505 4544
TI T2, T3 T4
T5, T6 T7 TS
T9 TIO
SI
41104
206k "Olean 20% 1/2Watt
4500 4513 4516 4504 4512 4305 4306 4506 4519 4537 4531 6005 6004
20% I Watt 47,0000%. 20% ViWatt 2,200 Oho 20% VaNatt 47.000 Oho
.25 Meg. Pot. with Switch-Trohle ContiN 50,000 Oho Potwitionwer---Saas Contr.! .47 Megohni 20% 1/2Wa3, 20% I Watt 220 Oh
126, R27. R21, R29 47,000 Oho RIO 21.000 Ohm SI 52 53
4011
55210 5215 5111 5103 9044
20% ViWast
S Mardis. 1 Megoh ni
.11
T6
10% 2 Watt 20% %Wan 20% 'AWN.
.5 Megolion PeoestiosiNNic-Vehrow Ceotrol
.22 Mftohin
.45
4100 4004 4007
4511 4001
R9
1I3, RIO, 115 RI6
4301
20% %Watt
11
RIO, RI I, RI2
.76 .76
4000 4005 4006 4102 4203 4112 4110 4106 4200 4104 4105 4010
2300 1440., - 5% Mk. C29. CIO, C3I, C32 .005 MN. 600 Volt. Tubular Paper
C35, C36, C37
6.11
4300 4300 4300
4101
C27 C2S
5% IkWatt
5% ',Watt
Sand Cl,..,. Switch Prolamine. Switch Aneroid', 04-041 Switch I.. 11-140 COO.101, Antenna Coil Illanil "A", A Coil i lands "II" and "C", R.F. Coil. Shielded i Bawd ..A..1 R.F. OW , Banda "1" and "C" i
Input I.F. Transformer Output I. F. T ,,,,, owe.
5220 5217 5216 5219 5213 5114
Power Transformer
5001
.4.1, OwNwor TrinsIernier PoilibioNon Tuning Assembly
LIST PRICE
4403
5101 55200
.45 .22 .23 .11 .42 .63 .21
114 .19
Al
.11 2.28 .20 .37 .34 .31 1.85 1.01 1.61
3.30 19.61 .05 .05 .05
ON -RECORDER -OFF
.19 .05 .07 .10 .05 .05 .09 .05 .05 1.31 .75 .05 .29
Recorder Schematic CUTTER
RICORCIII CHASSIS
MAIM
.11 .11
25 MN -25 Volt, I1=
CI
2.61
.01 MN. 400 Volt, Tobelar pap.
C3, C4
.005 MN, 600 Volt Tebolow Popov
C5
1.18
.02 MN. 400 Volt, Tinto. Papa, 2200048 z20% VaWatf 10,00001m. z20% %Wee .47 Megohnt z20% I Won
C6 RI
163 1.45 1.61
11.2
Iti
2.15 1.93 10.06
14
.5
IS
2.61
1.0 Olun z10% %Weft Who WONINI
47,000 Pm z20% 1 Wet 1.0 Mona.= *20% %Waft .1 Moron.. z2096 %Waft
RS
29, RIO Prices subsist 3. change witlwaet
111 SI 52
a
Moalfoc on -off 5.11.1 I Pan nf 34) Rampage On -off- 5.11.1
.5 Olme -.20% %Wm. Why Ward
RI 2
/-" DT. ANT.
fOONINOTOR
7-
/11067-RF
7- . ow,
Mmolun Pmmtiomonn,
10 ONION. z20% %W... Moran. z20% %Ws.
.22
37
440
NB -7= COMMA
41101-0EING-410
4205 4203 4112 4102 4106 4512 4515 4506 4302 4505 4500 4707 4516 4513
10 MN. 450 .41 V,
C2
2.92
HOFFMAN NO.
INSCRIPTION
1196-0UTPLIT
..VET -17-;
Ust him .73 1.24 .19 .21
4511
.19 .05 .05 .05 1.09 .05 .05 .13 .09 .05 AN
6002 4706
1.45 .06
MAWR WRIT
SPEAKER ALIN
7.7°-
SNITCH 011
I
NOTES: ONO If -116.= 1160-680101
RAN T11.11.= 5.5 -DA INN MAD 17-111.w a -14 IN
NV. AC.
U
CONTROL
79
LIMO RENON. LAMP PLUS
RAND wermal CIO NEMO PION
MAR IN UNIT POSITION.
P140114160706 61W?,
41111 Rol
0101. LAANI
0484. BUTTON IN
Tuner Schematic
ALL LAMP, TYPENO.
49
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS HOFFMAN RADIO CORPORATION MODELS B508, B509 and B510 CHASSIS 129
SYMBOL
4 Section Variable
C5, C6
Trimmer F.M. Sackett/
C7, al
Trimmer (A.M. Sackett/
C9, C I 8
8 Mint
±10%
C10, C23
.05 Mid.
200V.
CI I
1.5 Unit 220 W.f.
±20 % ±20 %
22 Mad.
±10%
100 Merit
650 Alit
*10% *20 %
.01 MM.
C14, C26 C15, C17, C45 C16, C19, C21, Cu,2 C24, C29, C30, C31 C20, C32 C25
C27, C28 C33 C34 C35
C36; C42 C37, C40, C43 C38, C39 C41
C44 C46, C47 RI, R33, 834 R2, R7, R23 R3
R4
15
LI L3
L4 15
V2
/ L2
3
6BA6
TI
UT FM. DET
1
-7
187 1.F. &Ike FM
600 V.
P.
±20 %
4118
Mka
.20
.05 Mid. 5 Mid. 20 MM. 20 MM.
400 V. 50 V. 25 V. 450 V.
4001 4101
Electrolytic
4209 4200
.22 .23 .84 2.28
.47 Meg.
±20 % ±20 % ±20 % *20 % ±10% *20 % *20 %
4506
.05
V. Watt
±10% *20 % ±20 %
Vo Watt 1/2 Watt
22000 Ohm 22 Ohm 68 Ohm
.18 .19 .21
Electrolytic
Vs Watt 1/2 Watt Vo Wait
4501
1/2 Watt
Watt Vs Woe I
±20 % ±20 % ±20 %
1st. F.M. I.F. Trantionner Is t A.M. I.F. Transformer
T3
2nd F.M. I.F. Transformer
.05
4534
.05
4561
.05 .05
.08
.60 .08 .05
4511 4500
1/2 Watt
TI T2
.13
4553 4539
4540
VI Watt
.08
4804 4513 4805 4512 4546 4543 4559 4504 4549 4557 4517 5279
Vs W.tt Vs Watt 1/2 Watt Va Watt 1/2
4560 4524
4502 4556
I Watt 1 Watt
.25 Meg. Pot IT... Contrail 2200 Ohm *20 % 120 Ohm ±10% 4700 Ohm ±20 % 47000 Ohm ±10% 47000 Ohm ±20 % 390 Ohm *10% 67100 Ohm ±10% 400 Ohm ±20 %
6BA6 2. I.F.F
/T3
Pap. Electrolyte
.63
1.24
Watt
Va Watt
ti Watt 3 Watt
.80 .05 1.05 .05
.04
.40 .05
.10 .05 1.80
5231
5283 5280 5282 5266 5274 5276 5275
.60
2.10 2.00 2.10
601L5
T5
RATIO DETECTOR
/'
/
,/
4111
,22
.002 MK 270 Mint
Paper
4112
F.M. Oscillator Coil A.M. Oscillator Coil Filament Choke
L6
r 7F8
200 V.
A.M. Loop Antenna F.M. Antenna Primary Cell F.M. Antenna Secondary Coil
12
r-
Paw
4006 4203 4103 4106 4102
4011
Paper Paper
.22 Meg.
R38
LE
Eleetmlytk
.5 Meg. Pot, (Volume Control/ 1.0 Meg. Vs Watt ±20 %
R35, R39 R36, R37
1.-1
Mica
450 V. 600 V. 400 V. 600 V,
821
R32
4021
±5%
RIB, 840, 841
R30, R31
.30 1.00 .18 .38 .19
2300 Mnif. 10 Mid. .01 Mid. .02 MM. .005 Mid. .1 Mid.
56 Ohm 2,2 Meg. 33000 Ohm 2200 Ohm .1 Meg.
R27 R29
.21
.10
4012
RIO, RI9 R11, 8I5, 1120 RI2, R23 RI4 R16, RI7 R22 R25 R26
Li
Commie N750 Commie NI50
400 V.
RS, R9, RI3, R24
Commie NPO Paper Commie
Ceramic Ceramic Paper
1200 Ohm 15000 Ohm 1500 Ohm
R6
LIST' PRIM 53.96 .80 .20 .24
NO.
4409 4308 4313 4019 4100 4003 4026
I
C12 C13
LI
NOIFMAN
DESCRIPTION
CI, C2, C3, C4
6
F. M
_ _ ge_ _ IJ
0241:
R
ANTENNA
1-1(
f040
12
R5
TIF/
RIO
)1-/R39
037 R36
3
136
H
COIL
A
1/2 7F8 F M. OSCILLATOR
L5
043
R35
R37
VVVI\
Re
8
/
'N/VNe R 32
AM PHONO
F
C41
1500 OH
R41
6AT6 AM.DETECTOR
Ih 6SN7 TONE
/2 6SN7 PHASE INVERTER
6K6 GT OUTPUT
SPEAKER
02LE PT.
R17
EX . ANT.
CI6
R
PHONO.
RECEPT
I@ RECTIFIER
117 VOLTS
C47
AC
INTERMEDIATE FREQUENCIES:
Broadcast Band FM Band
50
PILOT
455 Kc 10.7 Mc
LIGHTS
028
R40
Sal
-Er
P.ILITES
100K
DIA DIAL LIGHTS
LOOP ANESNNA
0501
OS
USE LOCATION
OW
05K,
0E0E0
E EKE
Asa LiTES
rr
SBA6
-0.00
Lilt'
I ST I 2
T
All,4.1IT,o TT;0413,SMOWN
RES.TORS . 20* -
POSillOr:a
NO.0
UNLESS OTHERWISE
SPECPFIED.
COUNTE-CI.OcKw.t POS4TiON 5 viEwE0 fRON
2 SW -0000 ONE SECT.ON -EWE POSiTiON TOME SWITCH SHOWN
6BA6
50-0010
RHONO
10"
NO. 201111PN . ntAvasao
END
>MN AUDIO
NOTES 0.0020 -.ACE WC,001-20015 PONE.00 ANO OVITCP, MOWN N KN. .1 00.1111014 NO1 015i1ON iS MONO NO2 POStIrON rs RAMO 1314000CST
u. OWEN
00602I0
6BA 6
.ON NEL" C.CLO
MON
)14;;T"'
SW002111
/
63A7
wM
tOP
4-
11:
AjNi7ENTSOC'KrEt
1..
6A L5
TWO
1"004S
I
S
PACK
CONNECT TO
2.:7..ON
5-, ON POran
COLD
LNO
2
MODEL 481-A (Chassis)
T_
OrK'O'rE'10
PINS .355 0010 sacAAL am%
OV
6307
121
NOT 0.3v !ILiR
WED
04001 I.E.
1-10UJAPD RADIO
L.-0010
r.h. DETECTOR
103K7
11k
The HOWARD 481-A Chassis, is essentially the same as the 481-M, 481-B and 481-C, the only difference is that the Short Wave is not included in this model.
12 AT 7
SSOC.N IOW
w VOA/.
K
6307
!Ag
a0
:no
yr
O oo o
oo
oooo
O 0 06'60
>a
g
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Meissner F.M. Receptor, Model BC Intermediate Frequency -10.7 megacycles Tuning range - 88 to 108 megacycles
AL M. 1.11, LIMA
/.141,101.
Voltage Chart - The voltages tabulated in the table below are the correct voltages which should be measured between the socket terminal and chassis with nominal line voltage and no signal. All voltages measured with a high impedance voltmeter. VOLTAGE CHART Terminal Number
1
2
6AG5 1st Converter
0
2.1
3
6.3V
4
5
0
260
63
2.1
0
270
37
1.2
0
184
--
0
0
95
95
0.95
0
84
84
0.95
0
0
0
0
0
150
0
3.4
6
8
7
RMS 6AG5 2nd Converter
0
1.2
6.3V
RMS 604 Oscillator
184
0
6BA6 1st I.F. Amp -0.4
0
6BA6 2nd I.F. Imp
0
0
6AL5 Detector
0
0
6.3V RMS 6.3V RMS 6.3V RMS 6.3V HAS
604 Audio
105
6.3V
0
RIVE
6X5GT/G Rectifier
6AG5
6AG5 04885 001 OIL MI. it-'070nral 10%
00883
NC
240V Tie 240V Tie 6.3V 287 RYE Point RMS Point RMS
0
6BA6
05452
6BA6
05052
6AL5
05453
E.Ar-M'o
0
- 001
W.
w" o
t
0
f2:.
2
o 2w
5
co
--4 68610%
6.6810%
oI
-
-1(
84 10.
I
;I
2r * 226
0520065006
-..........
9465
6 X5 G T/G
27K
106
19466
o
4502
2405t
T
411
0I 0., -1.
,
6C4
T ,F
DIAL LAMP
52
Ger. .25 AMP BLUE BEAD
All resistors ore V2 wall unless othersieo specified. All condensers ore 400 von unless otherwiee specified. Condensers "A" ore on fie lug do.*.
0 Common filament ground.
05 .
4c-L,,,,AUTIger"
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS WARDS
7 -2 VOLT FLASHLIGHT TYPE VOLT
"Er BATTERY
I
2
.A.BATTERY
=11
BACK COVER RELEASE BUTTON
RADIO
BACK COVER
84GCB-1062A
ALIGNMENT PROCEDURE AND RECEIVER STAGE SENSITIVITIES The signal source must be an accurately calibrated
signal generator capable of supplying R.F. signals modulated 30% with a 400 -cycle audio signal. A 400 cycle source is necessary for the audio measurements.
In order to make the adjustments listed in the table below, it is necessary to first remove the front panel in order to remove the chassis from the cabinet. The loop leads must also be disconnected (unsolder) and extended by means of short leads. The table below
lists the sensitivity at various points. All measurements are based on an output of 50 milliwatts. This may be measured by disconnecting the speaker voice coil and
substituting a 3.2 ohm, 5 watt resistor across the secondary winding of the output transformer. A reading of .4 volts AC across this resistor will be equiva-
lent to a 50-milliwatt output with the speaker connected. Variations of plus or minus 25% are usually permissible. Volume control adjustments.
at maximum for
all
SIGNAL GENERATOR Frequency
Coupling
455 KC
.1 mfd condenser
Connection to Radio
Stator
Ground Connection
DIAL SETTING
Chassis
Condenser
Variable
lug
Var. Capacitor (front section)
INPUT FOR 50-MILLIWATT
ADJUST FOR MAXIMUM OUTPUT
Trimmers
OUTPUT
1st and 2nd
100 microvolts
I.F. transformer
fully open
1650see KCNoneNoneCondenser---note 1(Rear Variable
Coupling loop
Oscillator Trimmer section)
fully open
1500 KC
Coupling loop see note 2
None
None
400 cycles
.1 mfd condenser
High side of volume control
Chassis
----
Ant. trimmer
1500 KC
(front section)
.045
Note I - Connect signal generator leads to a three
VOL CONTROL
turn radiating loop approximately 4" in diameter placed about 8" from the loop of the
1;,;1
receiver.
Cl500 KC. ANT TRIMMER
Note 2 - After chassis is installed in cabinet and re-
CHASSIS TOP VIEW SHOWING TUBE AND TRIMMER LOCATION
trimmer by ear, with low signal input. T2
BLUE
-
-
B BATT
L-1-1 ---11650 KC. OSLTFIMMER
connected to its loop re -adjust the antenna BLUE
volts
GREEN
C9 .002 MF13.
IR5
3S4
IS5
2 R
SPEAKER
RI 100K
671/2V
6 BAT T
R2 4.7 K I
455 KC.
ALL RESISTORS 1/9
IRS
174
155
CI
354
PAPER CAPACITORS
150 VOLT UNLESS
7
I
5
KILOHMS
TO
-L-
7
DOOR SWITCH SHOWN IN
FILAMENT CONNECTIONS
FILAMENTS
I1/2 V.A. BAT T iritZOINT
OTHERWISE MARKED. K
EIMFD
100V
WATT AND ALL
TWA. BAT T.
'ON'POSITION
53
LEAD eLACK
GM)
ATM.
4.7
6 0
VEw
PROP
PL.LOG
BATTERy
C
000 ,,10
OD
-A
NOV 0E1
9V VA
BL
RD
R IS. A ,f3
TRIMMER VIEW ON GANG CAPACITOR
)r
C2
r
- IC
_a
euk
AC-0C--,
LTC INPUT-
1T4
ELECTROLYTIC C14.4. ELC,IS
CHASSIS WIRING OR WHEN ALIGNING POINTER
REMOVE 4 SCREWS 'X' TO GET AT
SELENIUM RECTIFIER
- Lyle up mar5.rr 11,11609s 2 - Turn tuning 'holt Complotlay olockwlso, Imo Vp ripht side of potntw with the loll edge of tho loll long calibration moth.
To Align Pointer
ALL PLUS VALUES TAKEN WITH MINUS SIDE OF VOLTMETER ON B- LINE
ALL VOLTAGE READING BELOW 9 VOLTS TAKER ON 10 VOLT SCALE °ABOVE 9 VOLTS ON 250 VOLT SCALE UNLESS OTHERWISE INDICATED
DC SIDE OF RECTIFIER 100 V
LINE VOLTAGE 117 VOLTS, AC 60 CYCLES
NXTHGES AT TUBE SOCKETS ARE MEASURED WITH A 1000 OHM -PER -vOLT VOLTMETER
NOTES
RITPA4
ANT B[AD
1002
C20
QT
1
LU
11.---,200
ANT_
'OOP
(01
1:3MED
ovA
K.
CAPACITORS
SILVER MICA
SECONDA WINDING
COIL FORM
PRIMARY WINDING
CORE END VIEW
V2
1R5
CROSS SECTION OF
Rue
F
APPROX
ROO
42 DIA
0
I
C14 -D
WB
2
VW/
3Q4
MWG
Re
L
CIO --
2
TS
Re
535 to 1600 kc. 455 kc.
DO V
84BR-1065A
WARDS
Intermediate Freq.
Frequency Range
100r
CONTROL
-oo Fol. C22
I1
CAUTION-The I.F. transformer construction is such that two resonance peaks occur for each winding, one peak when the slug is above its coil and another peak when the slug is below its coil. Be sure the upper cores are above the top coils and the lower cores are below the bottom coils (see coil drawing).
TUBING
V
TOOL
4' LONG
rot CRIMP IN SCREW
r
0
ALIGNMENT
213XV.--
R13A
00
LC
22K.
TA
2.21420
RII
AEG
_J
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS 0
M
N
0
G
T
M
W
Y
R
E
A
D
R
74BR-1501B, 1502B ALIGNMENT PROCEDURE AND RECEIVER STAGE SENSITIVITIES
speaker voice coil and substituting a 3.2 -ohm, 5 -watt
The signal source must be an accurately calibrated signals
resistor across the secondary winding of the output trans -
modulated 30% with a 400-cyle audio sgnal. A 400-
former. A reading of .4 volts AC across this resistor will be equivalent to a 50-milliwatt output with the
signal generator capable of supplying
R.
F.
cycle source is necessary for the audio measurement. The table below lists the sensitivity at various points. All measurements are based on an output of 50- milliwatts. This may be measured by disconnecting the
speaker connected. Variations of plus or minus 25% are usually permissable. Volume control at maximum for all adjustments.
SIGNAL GENERATOR
Connection to
Coupling Capacitor
Frequency
Ground Connection
Radio
mf
Metal antenna plate
12597
1720 kc
.1 mf
Metal antenna plate
12SQ7
1720 kc
200 mmf
External antenna clip
12SQ7
1400 kc
200 mmf
External
12597
antenna clip
1720 kc
200 mmf
1000 kc
200 mmf
455 kc
.1
455 kc 400 cycles
Pin
Pin
Pin
12597
.1 mf
12SQ7, Pin
2
Iron cores all
Pin
3
T2
, (ETERNAL
a
ANTENNA
90
C
190° ,0
0.
0 .0
C2
300I_
....
1720 kc
Antenna trimmer C3*
Pin
B
28 microvolts
.05 volts
requires considerable change, the position of the an tenna coil at 1400 kc must be readjusted. These two adjustments should be made several times, until no trimmer adjustment is required at 1720 kc.
F AMP
NOTE ON SOME SETS R5 R6,C13 CI4 ARE COMBINED ON A COMPOSITE STRIP --T
@Wort)
rSillla
0,
2 W A
110 0 0
(9' _I 0 0 0
R6
0 0V 0
220 C
D
150K
500MMF
VIEW OF SIDE WITH TWO BUTTONS
00
C13
C4fTIAJTT RANSFORNER
500890
CI5
R5 150,000
....
:;c.
RI
R4
R3
3
4 1146
3.3900
22.000
C.5.,:::
0
50
TI
=
al)
ss
R2
05
AIMED
--'4
C14
00
VOL CONTROL
00
OUTPUT
___4._13r--
C1.
500.000
50L6GT
12597
2ND DET ,A V. C. N. 150 AUDIO
002T
TI -A
82 microvolts
the way out
3
C
8
microvolts
31
12507
A 4.1.,.; ear :
-
31 microvolts
Iron cores all
3
T3
-,
Q:
Adjust position of ant. coil (see coil illustration view)
1000 kc
111
1400 kc
3
12597 Pin
OUTPUT
Antenna trimmer C3
the way out
12SK7
CONVERTER
ANTENNA RATE
Oscillator trimmer C6
the way out
3
External antenna clip 8
00
Iron cores all
3
Pin
I 2SA7, Pin
90
the way out
3
*After the antenna coil has been tracked at 1400 kc, it is necessary to check the antenna trimmer C3 again at 1720 kc. If no appreciable change in trimmer adjustment is necessary, the coil is in track. If the trimmer
-' ''
Iron cores all
Trimmers on output and input I.F. cans
I 2SQ7
External
12SA7
MAXIMUM OUTPUT
3
antenna clip
mf
.1
Pin
INPUT FOR 50-MILLIWATT
ADJUST FOR
TUNER SETTING
a
TO
B
RN 3PLAAEIT VOICE COIL 3 2 01114$
B+ 6 ON -Off ST/ITCH ON VOLUME CONTROL
NOTES READINGS TAKEN WITH A 5,000 -OHMSPER -VOLT METER BETWEEN SOCKET TERMINALS AND B- LINE VOLTAGE 117 V AC A - CANNOT BE MEASURED WITH VOLTMETER.
B -12 VOLTS AC BETWEEN PINS 2 AND 7 C- 12 VOLTS AC BETWEEN PINS 7 AND 8 o- 43 VOLTS AC, BETWEEN PINS 2 AND 7 E- 32 VOLTS AC BETWEEN PINS 2 AND 7 RESISTOR AND COIL VALUES SHOWN IN OHMS. CAPACITOR VALUES SHOWN IN MFD UNLESS OTHERWISE INDICATED.
GIB
'""C17
.05
C16 B
C I6 -A
iso9oo
FIGURES AND LETTERS OPPOSITE SOCKET PIN NUMBERS ARE VOLTAGE
LI
AAW R9 1200
t2380
12381
1251l1
501.66T
.--Ir--fr-'FT-f\--Ii-
'11---C.-.
j 105.125 V01.13 AC - DC
115
00
eitar OWIFID 42/ 0 112
R11
I 2P
90
33
35Z5GT NOTE THIS CHOKE NOT USED
RECTIFIER
ON SOME SETS.
NOTES: On some sets dual trimmer C3, C6 is grounded to chassis instead of to B- as shown above. On some sets R6 is 470K ohms and R5 is 220K ohms. On some sets RIO is not used.
55
T1
ANT.
LOOP
Input
12SA7
R4
Cord
Frequency Range
12S07
Output I.F.
Df 31
" 220 YYF
C8
2 7
50L651
2
7
12557
2
7
7
12507
100
RIO
1200
15
470.000
PI
NOTE SOME SETS HAVE 500,000 OHM VOLUME CONTROL.
RESISTOR AND COIL VALUES IN OHMS. WHERE VALUE OF COIL IS NOT SHOWN, RESISTANCE IS LESS THAN ONE OHM.
OTHERWISE INDICATED.
CAPACITOR VALUES IN MFD UNLESS
R13 27
.004
SPChKES
3.2 MIS
NOTE: On some sets the B+ lead of the second I F is connected to C14 instead of C15.
WHERE NO READING IS INDICATED VOLTAGE IS ZERO.
1 VOLTS AC ACROSS PINS
.
AND 8 - 35 VOLTS AC ACROSS PINS 2 AND 7 E - 49 VOLTS AC ACROSS PINS 2 AND 7 F - 117 VOLTS AC ACROSS PINS 2 AND 4.
C- I
B - I I VOLTS AC ACROSS PINS 2 AND 7
R9
I CluEc.
7
2z0
C9 Mir
220,000
R8
C 10
11-111--.4
OUTPUT
50L6GT
R12
125A7
FILAMENT WIRING
(RE NOTE)
VOLUME CONTROL
MEG
R8
PER -VOLT METER BETWEEN B- AND SOCKET TERMINALS. LINE VOLTAGE 117 VOLTS AC. A - CANNOT BE MEASURED WITH VOLTMETER.
D
knof
100
C7
12SQ7 2ND. DET., A .V. C S. 1ST AUDIO
411* VOLTAGES MEASURED WITH A 5000 -OHMS -
NOTES:
RECTIFIER
35Z5GT
50L6GT
Electrolytic
530 to 1630 kc. Intermediate Freq...455 kc.
125K7
Pilot Light
6-8 Volts
100 Nur
C5
22,000
T3
I. F. AMP.
trimmers
220,000
C2
12SK7
12SA7
CONVERTER
Line741&
3525GT
RS VOLTS AC -DC
Nos
AlITINNA
EXTERNAL
Ose trimmer C4 Ant trimmer C3
UI
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS WARDS
84BR-1507B, 15088
ALIGNMENT PROCEDURE
speaker voice coil and substituting a 3.2 -ohm. 5 -waft
The signal source must be an accurately calibrated signals
resistor across the secondary winding of the output trans-
modulated 30% with a 400 -cycle audio signal. A 400 cycle source is necessary for the audio measurement. The table below lists the sensitivity at various points. All measurements are based on an output of 50 -milli wafts. This may be measured by disconnecting +he
former. A reading of .4 volts AC across this resistor will be equivalent to a 50-milliwatt output with the
signal generator capable of supplying
R.
F.
speaker connected. Variations of plus or minus 25% are usually permissable. Volume control at maximum for all adjustments.
SIGNAL GENERATOR
455 kc.
1650
kc.
1400 kc. 1400
.1
mf.
.1
mf.
400 cycles
Ground Connection
Pin No. 8 of
12597
Rotor full open
Trimmers on output and input I.F. cans
Rotor full open
Oscillator trimmer C7 Ion bottom)
Set dial at
Antenna trimmer C2
12SA7
Pin 3
Pin No. 8 of
12597 Pin
12SA7
See note A
none
kc.
Radio
Connection to
Coupling Capacitor
Frequency
3
none 12SQ7
External
.1
mf.
ntenna clip
.1
mf.
12597, Pin 2
'Pin
INPUT FOR 50-MILLIWATT OUTPUT
100 microvolts
(on bottom)
1400
13 microvolts
1400 kc.
3
.05 volts
12SQ7 Pin
3
Turn up generator output. Loop antenna will pick up energy.
Note A: Lay output lead of generator in back of loop antenna.
f Algrop yiE POINTER SHAFT
=al=
Bar
DIAL
ADJUST FOR MAXIMUM OUTPUT
TUNER SETTING
DIAL COVER
12D" TUNING KNOB
POINTER
(7)
AL'Ycn ruv
are tuned from the top and bottom (secondary on fop, primary en
NOTE: On some sets slug tuned I. -F.'s are used instead of trim108-14011 and 108-145 are trimmer tuned. mer tuned 1. -F.'s.
bottom). When slug tuned I. F.'s are used, R5 is 270 ohms.
B -13A-12023 and B -13B-12022 are slug tuned. The slug tuned I. -F.'s
351,7 -GT
12 507
12606
12SA7
12E106
V3
TI
T
0 35" G.
L-1 ,J F/L. CHOKE
6BE6
AM FM CI:P./5,97CP
T -I0
MMF.
70
C23
R-14
/
15000"
R-12
N._
R-13
5
0cn
41)
40
0
0
rn
t"
ti
'
1-3
o
1-3
15000" M
C---251 1
R-25
R-26
680"
OUTPUT TRANSFORMER
w(T-12
4.7 MEG.
FM DISC TRANS
01.5RI,M171,ATOR
L-1
011
TERMINAL STRIP
IRS
NOTE
OS
L-2
F
RECT.
[A*
E-2 ISO
C!:7TS
1U4
R. e ANYttAY
OIZIF a
l000
5300
.01IF
I -F AMP
19.2
GRIAi
3.3 SEG
41~
17-10
WON
R-11
S -I SWITCH
F
L
T' OA:
.Lu,OE
ORS;
1100
10044.4F
BLP
°RNA
ORO,
155
OCT Ai AVC
TEL
MEG
R -IS 3.3
EjAIL2fax
OR EQui
EvEREARY 450
i-Htv 1-1/2v
oft EQUIVALENT
EvEREA0 ART
67.1/1 VOLTS B`NP
'IP BATTERY
R -I6
I Y20
R-17
5
IApYYf
C
CHASSIS HS -62 & HS -62A
p.,1imp
SED
R- 2 2
270
4SAVVVv.
R-19
SHIELD
MODELS 5A7 a 5A7A
ELECT CAP
L154 Y. _ _ _ - O 0Y -
RESISTOR VALUES ARE INDICATED IN OHMS.
PE
SLIDE TYPE
SWITCH
03
.011FUE
o0 R-3 VNAM
C> COICL
cz,
"
OMEN
KONE THOUSAND 11000) 06MS. A' BATTERY DRAIN ISO MA AT 2.0 VOLTS. BATTERY DRAIN 6.5 MA AT 67.5 VOLTS. + RECEIVER CHASSIS
'
AND PLUG
LINE CORD
110-120V.-
HS- QORLY
OSC MOD
AC OR DC ,wwwl
CONNEGT1083 OF AV BATTERY
535 KC TO 1600 KC
FREQUENCY RANGE
EI.F.. 455 KC]
P TRIMMERS ON GANG
(BRAT VIEW)
Os op
OS C COIL
L-2
LOOP ASSEM.
as
1,1
EFC
LA
A
ARIA
T3
xD mr
00
0y0
VIII
LS, 3-1/2 PM SPEAKER
175
8!
00 O
C
O.
3.
r0rw
'
C3
0
ti
1.
0
-
2
w
r12
0
Lam,
D:4
0
MV
V/
Z
Om Z
rR
g;-_7_11-3
:8kio F.3
4. z*
0
IS
a
0)
C-1
NM,.
cos om
C-2
NOMINAL
71710
N.11111
C-3
R-1
L
.0S OAF
Too
R -S
C-9
C.13
5 122
IC."
mimo
5ENS CONY
.05 km
50 mu,
1"'
R-4
R-6 102
A
TI
a T-2
150
R-7
CONNECTIONS
4
500
L-6
TO OAT
WEPT
DIAL LIGHT
00C1
30
-9
56
FUSE F-1
5
C
'Del
LEAD ASscmoLv
56
100
R-131
L
41
6A T6
223
I
mr
POWER.I6V)
RECT.
Dl
C-23
AF
705 1R-12
SH-2
270
'R-20
AMP
f,
I MEN.
R-19
500q R-22 0 - TONE CONTROL
C-22
oAe
P*
6V6-GT
r A 30
NOTE: -ALL RESISTORS ARE INDICATED IN OHMS K. ONE THOUSAND 110001 ON45
R-16
15
SOURCE OF SATTER?
T0 CONVENIENT
c
...I:
2500
RAS
MMF.
C-16
2
WPM
R-23
C
50
SET, -ADC -A -F
tTt-
1001
SOOT
R IC
^4.
4
:%7] SH-1
RAI
,o AMP
1 MEG
2.10
09 C=0
voRATOR
61
1
TARP 0 AT
en
R -H
r-
BOTTOM VIEW (TERMINALS 2 e 5 -DUMMY LUGS)
T -I
'.11:
--
Aioactfa
03C RAM
L-
8
L.
I
AMP
6BA6 I -F
ew DoT
TONE
C-20
.006
I
KR8, HNB, 8FDT, 8G14T, etc.
TUNING RANGE - 535 to 1600 Kc
IF FREQUENCY - 455 Kc
An external speaker is used with these receivers.
Motorola BA Chassis is a 6 -tube (including rectifier) automotive superheterodyne receiver. This chassis is universal and is used in Motorola Models FD8, CTB, NE8, 0E2, 0E8, SR8, SR6, BK8, BK8X, P02, PC8,
TE
hIF
=Om
CT
L+2Nil
To 75
.05 Yr
S2 TOi
1001,
R3i .0 WO.
50
R-2
WO
68E6 050 - MOO
AMP
F
68A6
URN DOT
0
CAPACITOR
2 GANG
GRN
LOOP
GRN
.05 ME
DIODE
GRN
K
117V. AC DC
SWITCH ON VOLUME CONTROL 5 ME
* 47
PILOT LIGHT
VOLUME CONTROL
7 7
12SK7 50L6GT
IF.455KC
12SA7
0
R-5
500K
FREQUENCY RANGE 535KC TO 1620KC
7
12SQ7
ALL RESISTORS INDICATED IN OHMS. A =MULTIPLE CAPACITOR.
'Si'
NOTES =GROUND TO COMMON NEGATIVE. .GROUND TO CHASSIS. * =TRIMMER ON GANG. K ZONE THOUSAND (1000) OHMS.
220K
L-2
BRACKET VIEW OF OSC. COIL
I MEG
47K
220MMF
RECT
35Z5GT 5
75R
.002 ME
.1-2)
IF- AMP
BLU;
12SQ7 DET-AVC-AF
12SK7
12SA7
CONVERTER
AVON
50L6GT
.
345
1000
M F.
L.
I
ELK
arm
50 ME 150 V.
RED--
27
..- RE D
OUTPUT TRANS.
I
ELECT. CAP
30 ME 150 V.
FGRN
,AANAM---,AANAM-
12
11
.,
;
PWR-AMP
150
MULTIPLE CAPACITOR CONNECTIONS]
LL
0.02)
IOENTI1
8
470K
END
©
C ED 3
A
BARE
3.2
SPKR
4 PM
CO
U)
.05
RA
A -S
TOO
1 IT
C -A
5MME
CA5
5 YF
lease button and knob after tuning in station. Follow above steps 2 and 3 for the remaining
four buttons.
4.
NOTES
0
21
T-2 CONNECTIONS (BOTTOM A
.
'SAW
v
R.I2
RAI
A. LEAD ASSE MBLY
CO3 ='
I Ma TOR
OHMS
55
CA
5
590
RI.
CR
I
R 14 , EC
I-
1r
v.
T-4
CAB
wog BloNfj
plug
ip
SOO
R -I5
TO AMMETER
0 0n.c...Lio,T O
§
00
oolog
ROWER TRANS
/.
r' PI
8
-IT
.44frieta
ACCEPT
RAO
NMY
BA? =0
To
000
4.004
IND. CAVED
PILOT LANT II
I
7
T-2 DIODE
5018.
6AT6
ION
R-18
.00./
5 5IAEG
-POW I
RAS
50
R-21 220K
RS
'Mr
Of 5.1
604
1200
NANO INVERT
6AT6
C-
C49
C-21
-23 1209
2205
R-22
**-11
R-26
0-25
ELECT
R.27
C -22
MED
)010, CI
22:0
pw-
53.
455 AC TO 1610 AC
FOE AL ENCr RANGE
I -P
MODEL - CRS
A 20 ME
6V6GT PRA amw
IR 25
5
6V6GT PIRA AMP
T-3 TR.5
OUTPUT
47)
O
cars.W
This receiver Is specifically designed for Installation in 1948 Plymouth, Dodge, DeSoto & Chrysler cars. It will also accommodate 1940, 1941, 1942, 1948 & 1947 Plymouth, Dodge, DeSoto & Chrysler
Motorola Model CR8 is an 8-tube (including rectifier) automotive superheteroayne receiver using an external speaker.
5-
ON Orr
T
:
Is
130
R?
(TERMINALS 2 p 5nu.my LUGS,
RE5,5-09S ARE -NALL;;NF ,o;OGAND TOO)
HC
L-4
MODEL CR 8
With the tuning knob, tune in the station you desire to set up. The pointer will indicate the Tune carefully until frequency of the station. you are exactly on the station; tuning to either side of it will result in poor tone quality. Re-
2.
Wm,
68E6 04c MOD
A'77,072
NORMAL
Turn radio on by pushing the top button "in".
TO SET THE PUSH BUTTONS
CA
WaLALEU
150
R-2
68A6
RF AMP
Allow radio to warm up for a few minutes. Push the number 11111 button in as far as it 2. will go and HOLD IT THAT WAY.
1.
0)
0)
L-2
ITT
IRS
PLATES
.00
LINE CORD AND PLUG.
AC OR DC
110-120 V
7'7_ CUT
41.
S
OSC MOO.
BACK VIEW OF CHASSIS A SWITCH
6.0NE THOUSAND (1000) OHMS 'A BATTERY DRAIN 150 MA AT 2.8 VOLTS. ET BATTERY DRAIN 8.5 MA AT 67.5 VOLTS. -. F RECEIVER CHASSIS
NOTE'.- RESISTOR VALUES ARE INDICATED 04 OHMS
* TRIMMERS ON GANG
I r TT
CI
CAP
TUNING
4-4-1
(BRAT. VIEW)
OSC. COIL
a
L-1 LOOP ASSEM.
O
I
10 MEG
SOMME
R-5
3300
MAW
.02 m
76
.05 mF
C-2
OLL6F
150 v 8L0
150 v
20 1;fF i
C-8
ELECT CAP
(5ov
20 IFF I
RG
3.3 MEG
WARY
0.7
2/
W6A7
R-6
2O
AYES
550
0.9
NODE
)T
MODEL 58L11
MOTOROLA INC.
i
I
HO M
.RED R, RECT 1117.-101-""7OVZQuElP
C-3
R-2 MVP" 02 ro 22'
COIL
OSC
L-2
IOU
50
F
C-4
F AMP
104
oNTROL
voi
C-9
0061 MF
C 10
"DORM,
F.
R.11
I
voL 000100L
BAT
OF
a oN ercr swc.
(CmES
155
DET AF Av
AC
AB
/
3.3
67.50
650
270
0-16
15v
HS -114
1.5 v
OR EQUIVALENT
SERIES E VERE ACT 6.950
'A' BATTERY TWO 1.5 VOLT FLASHLIGHT CELLS
'Er BATTERY
EVEREADY °467 OR EQUIVALENT
-11111111-
CHASSIS
G
MFG
R-15
I MEG
R-13
0-14
00616F
,I3
H
3S4
PAR AMP
L
I
;
_
2T,
e,;
=Err jELEC:
I-so Mr -1
44=
006 MF
T-3 GAN.
ee
xo 0m
CM
41 0
DLL;
2
C5
L5 I
5.(F rm SPE FER
1400KC
ANTENNA.., TRIMMERqojel
TRIMMER 1620KC
OSC.
co
a)
L-2 OSC. COIL
RED DOT
3
T2 T -I 8 1-2
0(BOTTOM) SEC.
03 (BOTTOM) SEC.
owl=
250 FAME
* TRIMMERS ON GANG.
MMF.
15
moIm
.05 MF
R-3
3.3 MEG.
3
-5
RECT.
35W4
4
3
C-7
R-7
470K
MF.
3
4
5085
W.V
BLK
w. v.
-J
T-3
ELEC. CAP.
C-9
LS -1 SPEAKER
OUTPUT TRANSF.
HS -116
CHASSIS
fl
-GRN -4 1- --I 30 MF. 150
R-9
150
R-IO
TS
2
--I i.-
11150 12AT6
L
II
i
1
I
I 50 MF.
-11-
R- 8
470K
PW'R. AMP.
RED
CIRCUIT
3
12646 12BE6
R-6
27
HEATER
SOBS
to MEG
CONT. R-5
VOLT 0
.005
12AT6
58814,58R15858R16
MODELS 58R11,58R12,58R13,
NOTE ALL RESISTORS INDICATED IN OHMS. 10 ONE THOUSAND (1000) OHMS.
(BOTTOM VIEW)
CONNECTIONS
MMFT
115
0100E TRANSF.
61
I F TRANSF.
r- -
T-2
AMP.
12BA6 1-F
T- I
DIODE 455KC
5
®(TOP) PRIMARY
IF 455KC
GRN
12BE6
CONVERTER
®(TOP)PRIMARY
II
L -I
LOOP
O
tv
LI
MMx
z
MHM
1-3
C/7
0
(0
LOOP
L-1
L-2
AC -CC
117 V.
OF OSC. COIL
PLUG
COANDRD
OS YF.
C-2
.14, 7i-
WAVE TRAP 455 K C
IS IMF.
1486
SEC. ( BOTTOM)
1407
8
o
-6
7P,X
SOO IMF.
L-3
ME.
0 PRI. (TOP)
(:?
I -F155 KC
1, 7"
CAPACITOR
2 GANG. TUNING
R22
100
1447
1287
4.7 MEG
R-6
2.2 MEG
C-7
6
0 PRI. (TOP)
SEC. (BOTTOM)
RECT.
35Y4
L_
MEG.
ANYINt
R8
I.F. AMP
12B7 I4A7 0.
OS YF.
DIOD 455 KC
1407
ILOT LIGHT R47
L-2
050 Con_
OF AMP
C5
1407 OSC MOD
1467
7 Iv
C
ON S VOLW CCNT
R-1 'MEG.
BRACKET VIEW
r-4 I-
ANT
ra
I-
1486
220
R -I I
MYA,
0
-;
SOO K
VOL. CONT.
R-14
I -F=4 55 KC
C-15
35A5 PW'FL AMP
12137
14A7 T-1
13-9
flAm
T-3 LS -I 3.20 AC
NOTE
co ul
(no.
x0
OUTPUT TRANS PM
CAI
O
11
L-3
"
1000 TOSS
TRIMMER ON GANG (BOTTOM, DC NOT ADJUST) ALL RESISTORS ARE INDICATED IN 0055
. TRIMMER ON WOG (TOP)
10.7 AROUND TO B-
x
m
0
-4 *76. X CD
a)
C13
SPAR.
lir GROUND TO CHASSIS.
02 mF
C-16
1407.
C-7
FREQUENCY RANGE 535 KC -1620 KC
.01 mF.
'200
[7 ...C-13
ft_:.7 Ma4F.
R-3 C-9 R-8 RIO 0-15 C-11 T-2 C-8 R-16
C-12
--1 '6;6. 2
125K
TAP AT
PAI/IF
C-10
-1 I-
v:IF
22.01
,_--J C -4I
DET -AVG- A -F
CAPACITOR
J GANG TUNING
Fr TRIMMER LOCATED ON COVER
LUG VIE*
TRANSFORMERS
T -I, T-2 8 T-3
T7 -GROUND TO COMMON NEGATIVE
-
TRIMMERS ON GANG ALL RESISTORS ARE INDICATED N OHMS ONE THOUSAND (1000) OHMS -GROUND TO CHASSIS
NOTE
ISvA,ON
op,
NSUU,ON
RANOLE Ix SuL ATTE, FROM CRASS!, DPAC TOR 4 COP.NECTED FROM MNOLE TO CHASSIS
I
I
C-13
1500
MF
EvEREADY 153 GENERAL 60A -6F6-5
irm
25v ,SOY
ROME 20MF ROME no
130 v
13-13
3 5MEG ON ME
5-1 SLICER SWITCH
BATTER,.
PLUG
OPERATED BY LINE
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
i a la
MODEL 708
4)
'AT'
((Cl
66E6
6066
Irr MAI
oervc;0;r
,r MOP
-
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T
'"Cr no.
10011111,
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1,41;4..=0,0011 ITIM01114 t -MOO, /.101
L. 0.0,111. 0011010, %MP
no
ises,n1£66 CDt6(O6 016
al.
MIMI MCC, 0.1.11 Sc.
3111.-Cn
fl
111
are on,
01.111001
3 1 1011 /UMW iy 411.0ID
OMMM 10 ATI ,0CO
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WWI 5. 01, CVOCIC
Ma
11,01.
-
ti.t,TMCAIL
tl
vrn111004
6%4
` ;
moon. ---too
OM
tot
0 00X COM
1.0
Sr 1
455 KC I
(WOOER/Cr
P.M
'SS .1C TO 100 110
6,17
TX
..4.11
"As
MODEL 408
00 NM
1
43 0=11
ISA.
68E6
10 MOM 110
LIM 14,001
SAT.
PIM MI/.
OCT;00.0 .04
Of C .100
T.4 Si"., 640.411
" 70W011"7::T 4". (TIMM/LS
-11111,
1.611
664 nOT .0111T001
nOTE
I1110051.- 400
401. ilesreT005 Ant 11101Ci10 111 00. .4 oo0 1,1003110 (10001 001111
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Mgr,
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1.1. 551101l
mown.
140000
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coo
C7
2SA7
R9
Re
FE'
I
RIO
R3
12SA7
c
12 SO 7
12SKT
.42 d
/\ \ /\
IS MEG
R2
5016
OR I
\
3525
.05
05
2.2 MEG
R3
I. F. 455 KC.
* MEAEUREU WITH VACUUM TUBE WILTWTER
T3
C4 .05
C2
05
TI
12 S K 7 IC
%Rf
R4
2 S07 09
R6 410K
.01
I
17 V 00
RIO
[F.
GIIA
4°
<150
R9
010 .02
T330K
C4 .05
H:0°
1200 Re
20
CI IC
12 V
50L6GT
13
2 11,
woodirolos
(0)
'0)
DIAL STRING
1/2 TURNS
TO CHASSIS BASE
INDICATES GROUND
90
LOCATION OF PARTS UNDER CHASSIS
Ri75
FLOATING GROUND
15 MEG
R2
8 .0005
1
35 Z5GT
j SW I
ISO
R9
03I
C6
R4 1 MEG
-I
CI
C2
.0001
5
T
L2
R2
3
C4 °5
RI am
R15
470
01
I
I
TI
I
R3
1,,,,G
-1H.
.00025
C7
TC 3
78V
FLOATING GROUND
C3
GI
T2
-
1
1
II
4.7 MEG
R7
C5
!MEG R5
C5[S R 5
K CH/SSIS FLANGE ON M. 2410 P.
R31
LOCATION OF FARTS UNDER CHASSIS
RI I WAS LOCATED NEAR TFE
2 1 7t._ \LisSfy.W-2 all R4 a R6 WERE USED CNLY CN MCOEL 241 P
C4
C3
UUUUU
°R6 degenerative feedback resistor is used only on the Early Production of Model 241-P. R4 was added and 1111 relocated on Model 241-P, to reduce the temperature of the rectifier.Except for R6, R4, and Ril, the circuit is the same for Models 241-P and 2410-P.
VOLTMETER, WITH A UNE VOLTAGE OF 117 VOLTS AC AND NO SIGNAL.
3.3 MEG
R3
78V
.8V
4.24 09
-- \M-
-ill :-! L__--
a
IU 4
VOLTAGE MEASUREMENTS ARE MADE TO FLOATING GROUND WITH AN ELECTRONIC
CHASSIS GROUND
4--
I. F. 4-5 Kc.
LI
I R5
R6
40
C9A
01
C6
R7
18V
MEG0
HI
002
C8
C9C RIO 100_680
iER6
ARRANGEMENT
DIAL STRING
C 5 ----
680K
R8
O
By
°32 32 V
C8
lu MEG
I S5
R7 47
C5
MEG
KOK
R9
G9 B
20
P
5EV
eTe
4.2 V
ILB4
T3
SPK
ts-
I
tri
CCI
co
co
t:D
ru
In
to
a x
0
71
tri ti)
a s (E2
P
a" n
Sri R.
tz
1,3
C1 tTl
4 0
Cl)
'Cf')
z
0
2 C9 k
3
604
=
7.3iA
SW
-
as
La
/
0 0 /LIE
It' Ell
e
os
S
333
iL10
T. RECT.
F II 0-
swt
115 v
R 10
12BA6
aCEse
sw,
LIE
w TSC
CI ,7-.--1-1)H'\AP-rAt.
L II
CELL
cositER
=
CEO
ZALi.
_./
L13
C5
AM 19
RA
I2BE6
I'
PLY. MCA
cg4
LOCATION OF PARTS AND TRIMMERS UNDER CHASSIS
C45
C34
)i12
R25.
mvE
21
Vc
'336
0
=V I.
12BA6
.11MIC 110Y. Of IMO
020
RED DOT ON FIRST I.F. TRANS, LG2EEN DOT ON SECOND I .F. TRANS.
I`°'
a000e 3 03
/
=
//75/
\
-r\
C41
C39
LUGSARE COUNTED IN A CLOCKWIM DIRECTICN, SEGINING AT THIS COT.
the
R
_L_
CCM
12BA6
L
\
wa
ELICVC110 ,OLTINTEN *IN LINE .,11. POITTYL. .401.111 OW11
FM -IF
FM Band
AM -IF
Broadcast Band
g ...N.
RIO
FREQUENCY RANGE
Al %MUM kermosesns At 01, II/ V C NO Of,
\ 92v
12H6
88-108 MC 10.7 MC
5404600 KC 455 KC
5OL6GT
PK
0
tfl
Ch
1-3
0rn
(000
40
0i
U'
o
R5
11
0
2. R20
2ND. I
I
I
rI
4v
R5
05
6
10 MEG
G
03 T5
11/
SPEAKER
I ST
os
C7
22K
R3
1
J.
0
LAYOUT
TUNING SHAFT.
2 3/4 TURNS AROUND
J
T
.001C9
TI
DIAL DRIVE CORD MAKES
TUBE
F.
C3 033:6
oo
R2
CONVERTER
C21 ? 680
R22
ODE
...,.. FLOATING GROUND
I
G16
06,
C15
.00:033
RI
9.,
4 2V.
.2 -Q L4
CIO
L3
CO
5.6 v
RF. AMP
I R5
IU4 4
.
.2
VAR. CON.
20
C178
RIO 7 MEG
330 K
IF
FREQUENCY RANGE Broadcast
kc
455 kc
540-1600
IS5
TX
00
C17C
05
CI8
3V4
RI2
WOE 111q1.1
22 ME
AN
R19
ELEGTEKNIC
1000
09
40
C19
_AA A, R2I 8,,v+ 3 3 MEG
ttlY PL1B ltP VIEW
-1-
P M.
62
1800
RI6
120v
Br %V
Mn
1893
R17 680
RI4
RI3 47
SPK
OPERATION
FOR UNE
SW 2. SHOWN IN POSITION
SELENIUM RECTIFIER
LOCATION. OF KARTS UNDER CHASSIS
v
ON VO_ CONTROL
I
CI4 00a25
94v T3
)...-i. SW.
5.6 V
OUTPUT
fl.TIETER Mali 117y AG LINE VOYAGE AN) NO SIGNAL
VOLTAGE NEASLNENFN,
02
C23*
2
.COXICS3
000c5
Cl2
001
C11
Om/
0_,04
2.82
DET. AVC. AF AMP
R13,2 MEG VC.
R9
228
RI8
R7
Pit 47 MEG
47 K
%`, T2
L 3 3 M EG
R6
I. F. AMP
On battery operation, the B+ voltage measured to floating ground should be the sum of the A & B battery voltages or approximately 99 Volts with new batteries.
CHASSIS GROUND
330K
L2
yy 4 yR4
C2
CI
OUTPUT TRANS.
c._
C20 - 002
LJ
CLIP FOR EXTERNAL ANTD1NA
I U4
Cy Crl
1-3
OUTSIDE FOIL.
INDICATES
CURVED LINE
NOTE: TUBULAR PAPER CAPACITORS
R7
CIO
[IRS
C9
C13
C6
T3
SPEAKER
RI
LOCATION
OF
R3
UNDER
=1:Dc3 c=1
CHASSIS GROU ND
PARTS
14 USED CNLY WHEN C14 IS 50-30a1
C12
OR*
SW
R6
330K
RI
12SK7
Electrolytic Condenser.
°Used only on sets with .50-30 uf.
T.
WI
CI
ANTENNA
I.F. 455 KC.
I
In L LI
TEXTERNAL
MI
L112
C2
CHASSIS
C 14 B
C 14 A
C5
r
L2
3
FLOATING GROUND
I 2 SA7
IIQV
GT/Gi
35 L6
©O
36LS
2ND. IF
ON-OFF VOLUME
12 S 07 GT/G
35Z5G7/G
I2SK
1. F. A.
R.F.A.
MIX
12i3A7
121307
T A0404.
3'"°
6
MEG. MEGONM
K 1000 OHM
7
a
TONE
112111 te or)
15
5
2SK7 GT/ (.1
TUNING
I,
35L6 GT /0
VAR. CON.
" ."
6
1, V AG uNE VOLTAGE B MG SIGNAL_
SWAGE MEASUIEMENTS NR WITH AN ELECTOONIC VOLTMETER,
12SK7
128K?
12SO? SPK.
rn
MxM
1-3
hi
0rn
41)
lib
0hn
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS ARVIN RADIOS - MODELS 547 AND 547A
CHASSIS RE - 242; 5 TUBE AC - DC ALIGNMENT PROCEDURE PRELIMINARY:
Across loudspeaker voice coil Output meter connection 0.8 volts Output meter reading to indicate 200 milliwatts (standard output) See chart below Dummy antenna to be used in series with generator output See chart below Connection of generator output lead Floating ground Connection of generator ground lead 30% 400 cycles Generator modulation Fully clockwise Position of Volume Control Horizontal Position of dial pointer with variable fully closed Place the set loop in the same position with respect to the rear of the chassis, and the same distance from the chassis, as it would be with the set mounted in the cabinet. Function Trimmers Adjusted ( 'enerator Dummy Frequency Position of In Order Shown Output of Antenna of Trimmer For Maximum Output Connection Generator Variable IF Top of 2nd & 1st 12SA7 Grid .05 mfd. 455 Open 1F trans. T2 & T1 (Stator of C-1) Osc. C2; Cl, Trimmers on 'Test Loop 1400 1400 Ant. Variable Condenser Check Point (If weak, 'Test Loop 600 600 adjust variable plates for maximum output.) 'Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6" in diameter, placed about one foot from the set loop.
The alignment procedure should be repeated in the original order for greatest accuracy. Always keep the output from the signal generator at its lowest possible value to make the AVC action of the receiver ineffective. 12
ND. F.RANS
TRANS
I. ST
VAR.
C2
D
I. F.
CAN
4,
'I'
50L6GT
TRANS
CI
SPEAKER 1
1
LOCATION OF PARTS UNDER CHASSIS
OUTLINE FOR TUBE LAYOUT
12SK7
12 S A 7
50L6G1
12SQ7
122 V
90 V
SPK
cr,
T3 S
22K
kr. J -I
P. 2
-*-11
evvVT2
vi r - ,---1 90 V
1_
...,
k=.1
1
1 MEG
_
01 Lam__
R5
0-WAN c4 R3 .7Ct
T5 ,v
T4
L_
R4
15 MEG
CR I
22 MEG
CS
0005
R9 330k
C9 05
FLOATING GROUND
12307
12SA7
12SK7
50L6
3525
117
VOLTS-
AC. -
20
40
SW
P
-C78
-r-C 7A
CHASSIS GROOND-
Gam_® CD osT
/7\1
cte
0-
NOTE: TUBE SOCKETS ARE VIEWED FROM UNDER SIDE OF CHASSIS. VOLTAGE READINGS SHOWN AT SOCKET PRONGS ARE TO FLOATING GROUND AND ARE TAKEN WITH NO SIGNAL.
A.G. LINE VOLTAGE AT 117 VOLTS. WHERE NO READING IS GIVEN, THE VOLTAGE IS ZERO OR TOO WW TO READ.
15
RI I
30 V R 10
moo
35Z 5 GT
77
eJ
C
K
33oK
RI
.0 5
C3
1000 CHM
MEG MEGOHM
CODE
Z._
LI
CI
22K
R2
U
SW
1R4
05
C IIC
CUB
CI IA
05
GROUND
C4 'FLOATING
-
14-ia.ut
`-RIO
_L_
INDICATES GROUND TO CHASSIS BASE
HANK
ANTENNA
100 V
I2SA7
R3
Cs
C3
12SA7
4.7 MEG
501.6
C2
77
12SQ7
8
of
R3
L2
C5
a 00005
r
2
C6
47
R4
.opo
7
T
35Z5GT
R9 15
20
_CHB
20
CliC
sD
>
125 V
20V
OL6GT
.01
C12
OF PARTS UNDER CHASSIS
LOCATION
IF
Broadcast
FREQUENCY RANGE
Measured with Vacuum tube voltmeter.
AC hue s ()Rage at 117 Volts AC.
455
kc
540-1600 kc
Tithe sockets are recei ed from under side of chassis, Voltage Headings shown at socket prong. are C floating ground. ;Ind are taken N11111 110 Signal.
35Z5
R7
470K
1MEG
R8'
c 0 co2
C 8 .o5
I2SQ7 P.M
O
S PK
v
1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
.,
wl
G--(1:10
0
0
2;1
00100
2:9 il
0
w
A009/900'
A009/500' o
z
"1
o
/A
/^
r0: !z2; .0 .J:.. WLL0*t
li
'1/ 001
?
e,'
0901
If Olf \
\v 101:111103
MOL9
0
09009
cos
1\1\1\i
0
ITMOL
31/101
VPI
A 009/ ZOO
II
Koosygoo'
II
JfYlf OZ 1/1.111,
UR 8'9
cg C.)
A OZ
0
O
0
r_
1.T>4
II A 009/9 00'
zw
0
i:t oo
co r A 00.0 Z"
I,/ 1
f -A/05,4
L-VVV--4
11990
1/14 9 9
2
O
ft
0-i
A 009/90
T009/MY
c0
ALIGNMENT PROCEDURE CHART STEP
SET EDGE OF CONNECT HIGH SIDE OF SET SIGNAL GENERATOR POINTER CARRIAGE SIGNAL GENERATOR
TO-
TOR.F SECTION OF VARIABLE CONDENSER IN
SERIES WITH A .I MR,
EXTREME RIGHTHAND
455 KC.
2
3
1400 KC.
RADIATED
SIGNAL
(CONNECT
BOTH
SIDES OF SIGNAL GENERATOR TO RADIATION LOOP)
POSITION. (CONDENSER
PLATES FULLY OPEN)
400 VOLT CONDENSER. US E
TO-
600 KC
ADJUST THE FOLLOWING FOR MAXIMUM OUTPUT. (KEEP SIGNAL FROM SIGNAL GENERATOR
AS LOW AS POSSIBLE)
C6, C 5,
C 4, C 3 AND REPEAT IN SAME ORDER. F TRANSFORMERS) Os, AND 2.o I
C2 AND CI
1400 KC. CALIBRATION POINT.
OSCILLATOR AND R.F. TRIMMERS
RESONANCE
CHECK THAT EDGE OF POINTER CARRIAGE
(APPROXIMATELY 600 KC. CALIBRATION POINT)
A
(AT RESONANCE) COINCIDES WITH 600 KC. CALIBRATION POINT.
79
01.1
S-2
REAR
50-60'1
V.A.C.
110-120
CONTROL
ON VOLUME
5I
STANDARD BROADCAST POSITION
BAND SWITCH IN
O
w
\
O
\
4
T44
S.W.
220
.01
C7-2
Standard Broadcast Short Wave . .
6X5/GT v5
Tuning Frequency Range:
3.30
0144
0
324
R1 -2M
6SK 7 mi IM
R3 -I
C3-2 220
540 to 1620 KC 6 to 18 MC
TO HEATERS
IM
R3-2
6SA7
sw
5-2
CENTER
r
25 MFD.
6K6/ GT vl
6SK7 v-3
Intermediate Frequency: 455 KC
r
L-6
--, 313-3,2Dmt
L
IE I F
010-2 T 005
L-2
560
RIB
SOCKET
100
r ,00
PHOng0
47I2
c
2No I. F
VOLUME CONTROL
7
3
6,.15
mob
6.3 V
MIAIER
ANTENNA
r
I
00
p
220
UNLESS NARKED OTHERWISE
ALL RESISTOR VALUES IN NIA
OSC. SIGNAL PATH
-R FEE AND AU010 SIGNAL PATH
L__
Vs00;siAN
FIXED
VARIABLE
#
2700
10.000
2200
490 V
TRIMMER
C/05
NNW *IOW
12V.
#
CONDENSER 571100.5
RECT/FIER
V
SPEAKER 64140
D5 NF
200
MAT OF C105
MW
90
ma MF m
7AS
1200
ourour
I.F. 455 KC
.0510
AZ4ME.
MOW
MODEL UN6-100
786 ZNO Del
I 57 'AUDIO AY7
0 0 0'
ct
1-4
001
C.;1:10(1P
1:°
CD'1:1
.0
1-,3 I-0 K
CD
o
Ow 0 0
CO
1-0 K In
H
1-a
0 ct
o 0.
ct CD
00
O '1 O
1-4
ct
°(33
00
O0
1-.01
cr
Kco04
tNct "0 0" "0
10 o'1000 CI
'0
K00
lo 0 o 0 1'1
Ir-4 1-0
o xm0 co
1-0W
CD
ct
O CD
ct P-
1-4 0 0 I-4 CD o
co
NOTE: All voltage, capacity, and resistance values shown are average. The voltages were measured between the points indicated and the receiver chassis (B-), using a 20,000 -ohms -per -volt meter, with 6.3 volts d -c input to the receiver power supply: the volume control was set at minimum, and the tuning condenser at 550 kc.
Model CR-2 is similar to Model 106-100 illustrated.
PHILCO AUTO RADIO, MODEL UN6-100
5.0 MAPS
°moo
0mm
25- 171 -1.51IF
muH t.
7=4
100
78 6
CONVIR
L
OHMS
306
Loa
360
C104
MF
C /06
1.--+
25011111
C/OS
250/AMF
510
12
IL _
1
IONMS
i
I
/ II /
.1
ti
x
0401
5
OHMS
J_
:(3)1
.04145
.430
SECTION 1
LwARPED OTHERWISE.
ALL RESISTOR VALUES IN 07445 UNLESS
-44- OSC. SIGNAL PATH
8400
71,1
100,000
T2ONF
C/00
FIXED
%KOLE
4
180V
TRIMMER
"1
S.K.
-
10 ME
looe
C/OOC
OHMS
,4C700.4
1000
OHMS
10/02
4/95V
C2a15161C
1000
0/0/
4715V
OS
OHMS
62
L4034
10 407
22 000
8404
CONDENSER symeoll
AEC ThriER
00501
C/0/
aim
Loco
5400
4008
SO OHMS
L4008
240/
LESS THAN 1 OHM
71/00 001
L
/ci4
I
26 OHMS
_.,L4004
ewim"
I -4-F I -F AND +4100 SIGNAL PATH
I
15,0001
04027
4018
/ L./
"-11.-414,
V8/00
I/00
4014
650
150
011
5141
03
7511
SECTION 4
5100
40 OHMS
L 100
4.C103 I. ".250MIAF
VC
2200f
R3,2?.
I 300
C.708
1.0501
2/
R306
0514F
CJOJ
R307 220,030
V
?AI
INVERTER
PHASE
220,000
R3/1
NOTE:
SOV
WAG
8200
=f,4T11
1=0-1
220,000
MEG
1700
E
RJ08
350000
R J054
1MECL
RJOJ
CJ06
tt
VOLUME
CONTROL
3
CAM ICOMIK 1.1
.0134er...
90V
786
1574.7 2610 GET
02141
SECTION 2
01101.
CJO7
4 MEG
R 3058
TONE CONTROL
6600
11.31/
_
IJOF
SECTION 3 19511
All voltage, capacity, and resistance values shown are average. The voltages between B- (chassis) and other points indicated were measured with a 20,000 ohms -per -volt meter, with the volume control at minimum and the tuning control at 550 kc. INTERMEDIATE FREQUENCY 455 kc.
P511
C/02
/0.7
L10/ 0661r
OHMS
41
L 404
4_ OHMS
16 5
L404
TIsm, .4.
LESS THAN 1 OHM
C408
55
4024
4028.
CI
C406L
1
10403 0541
!MEG
250140E
C404
7 OHMS
L402
7 A 95V 7
RF
L402
15,4
05C
L003
it
MEG
111..
45
U
atED VARIABLE TROMP ELECTROLYTIC
f
AC,
to
CONNECTIONT7ONDENSER
SYMBOLS
G11
10.000
470
6100
41.55
68.46 R F AMPL
5 TV,
"
OSC
i
MEGI
R400
MARKED OTHERWISE
ALL RESISTOR vALuES IN OHMS UNLESS
1
4 OHMS
05C L403
SN
= WNW*
C406
c303
2.5
5"VA7
OSC S,UN,
L404
(50541.8
C404
L402 RF
it OHMS
IIL
C405
11
OHMS:
2.0misT!
B
L404
mum
"e5
RF If AND AUDIO SIGNAL PATH -415OSCILLATOR SIGNAL PATH
.`2.
4s
GkE
COWL -VTR
68E6
20350
SECTION 4
X INDICATES PLUG
ACRIAL
L401
B.1CBOaf
8 OHMS
available
SLAG
2300
3
0
0
P22cc;',,,7
205V
Eat
LAMP
1700 DIAL
SOURCE
RADIO
LEAD TO
"A
6.6 VOLTS
27,000
8301
L 5
,°,
HEAD
°A' LEAD FROM CONTRA
LESS THAN I OHM
/100
6203
I
L101
100
6/00
I OHM
LESS THAN
(3374,
Dim
6C z02
*S7a7
10HMS
400
Gattm
:440 OHMS
(104 6
.014.414.
6205p
1000
6102
x ci05.4 kg
260V.,
RTCTIFTR
644
2
7C5
1
450 V
4700
V03
5 OHMS FIELD
SPEAKER
C106
Z.251.4
C1058 111050
s205v
0 a a
OHMS.°
.006 ME
okk
250V
r
ILSA
xzI
04/7/Pur C2041247 v
SECT ION
.0051.4F
SAINT020/
5 MEC
lAmF
100
C703
Philco Corporation
6BA6 (2), 6BE6, 6AV6, 7C5, 6X4
SECT ION 2
CONTROL
TONE
xsT,
CONTROL HEAL
2100
I CH1A_S
THAN
LESS
WWI
IN
VOLUME CONTROL
15,000
0201
350,000
6200
_1_ CO.-1,1EG
oodh,
z2 645,6 757 AUDIO
LESS THAN
100
RW/
S44 -,6666o'--
I/02
27,000
*C37M1AP SST!
68100
10
.4
6302
087- AVC "2 6,46,5
It OHMS
p
C304..
I051.51
1(303
I5 OHMS
301
MODEL CR-6
SPECI FICATIONS Six -tube superheterodyne CIRCUIT 535-1600 kc. FREQUENCY RANGE 455 kc. INTERMEDIATE FREQUENCY 3 watts (approx.) AUDIO OUTPUT 7 amperes at 6.6 volts, d.c. POWER INPUT Any Philco auto -radio aerial AERIAL PHILCO TUBES (6)
Philco Auto Radio Models CR-4 and CR-6. Schematic Diagram (Revised)
F100
(LUG END VI W )
SOCKET TO CONTROL
5/00
.05 Mlle
12 OHMS
6846
I F A44PL
SECT ION 3
MODEL CR-4
CONTROL HEAD
PLUG TO RADIO
0
.
(LUG ENO VIEW)
SPEAKER
SOCKET TO
11.50415
Both models are the same, with this exception: in the CR-4, the speaker is self-contained; in the CR-6, the speaker is separately mounted. The control head is separately mounted. Custom -style control heads are
Philco Auto Radio Models CR-4 and CR-6 are six -tube superheterodynes of the universal -mounting type.
PHILCO AUTO RADIO MODELS CR-4 AND CR-6
U2
0
tri
LMMi
z
1-3
0
40
40
hi
0
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Section
TROUBLE SHOOTING
I -F, DETECT.OR,
Make the tests in this seciron with a cl.c voltmeter connecting the leads between B-, test
AND A -V.0 CIRCUITS
poim N, and the test points iodietted in the chart The voltage readings given were taken with a 20.000.ohms.peovult meter, al a !me volume of 117 volts, sc. With the power.curd plug connected to source of power (0.0. or d.c.). turn on the poseek and set dm volume control to Imam
For the tests M this section, use an 0.1 signal generator, with modulated output, set
II 455 10. Connect the generatot ground lead
IC B-, test point 0; connect the output lead to the me points
through
1.04. condenter indicated .0 .10. dun.
With the prover.cord plug conneeted to a
source of Dow. (2.1. 01 the.), set the volume coneol to maximum (rounterclockwie) Ill. "NORMAL INDICATION" is obtained
Follow the steps in the order giveo. If the -NORMAL INDICATION- is obtioned III step
proceed with tCobol. lot Samion 2 circuits), if not irolate correct
1.
(.14111
the uvulae in thia caution. ETV
ABNORM1U. INDICATION
INDM NORICATION
PO
I. .n.I.pollood with Me .1.1. fOr
2 3
4
5
D
Ig7v
1
103.
r
r,,
Co. mama. No .040o
I
STEP
DelectMer 11723. Omens 0100. SIDI.
Changed ...n ear 5101.
Law mem..
No mho.
.
Sam. GIOIA. Changed P.D..* 1100A. Lent. CIVIL Ch.ged Reelalmee, 11100A.
I
Gem 1100*. Shorted: C1011.
No le.*
OP*, MEGA. Changed Realm**, 0101. Lou.: CIVIC.
Law valuta* C B. Illgh voltage 00.0, R207.. M000900'. 00 0,1101. Grew MOT Shored: CIVIC. Gleam Tem. Num may be caumd by open CIOIE. CIOIC. C100. or R103. TIO4 park *coed In °smother menne. may came abnormal leeceMee thla Immo BATTERY VOLTAGE: Replace helew volts.
boner, when bettl mile tensed
ea)
Thl. part
woks.
DM... 174,
Demerol IRS, She*. C00% GOOAL 030014. COME
nal Input
TROUBLE SHOOTING
I
the ouilla
IL. 011Op'
test.
erith modulated out at
loll poll
01. 00 B-, 0; 11:1717117he17,:pud 'read
in the mt.. use an audio-
condemer tu the test points indicated to 'the ,mrs,
'r'Pnt?tIndgrle'd''tii'Et."resu'UN;b.dirtZ:r the output lead through a .1,m1 condenser
Se the volume control td maximum (.rommo
clockwise).
IC the test points indicated in dm check
Set dm rotting remind anal signal.generatot requency as indicated in dm chart. Ii lb. -NORMAL INI4ICATION" is not
With the Cl 00 plug connected to control to maximum (counterclockwise). A. just the signal -genet. r output as required
"
for each step.
STOP
If the "NORMAL INl ICATION- is obtained
r=.
STEP
TEST POINT
NORMAL INDICATION
tn.. C
3
D
POSSIBLE CAUSE OF ABNORMAL INDICATION
Trouble hi MI. meta. eclyzio;Nt
Cl.,.
A
4
Same al step
I.
1LIS
Emma*, T*. 11 speech or cm* m Mumma Mans *Wm I operating normally, ehach se4 0300 be leakage. This
part leaded
11203.
TaulalL la Me melon.
C
101040,
Tune us Hr..
Same as elep
Shafted, C400. C400A, C405. C402. ha asellmor chrull Istep 34
Towable
pea.: IRS.
S.O..
SECTION 4
IF
SECTION
I.
0
kr
Msc.
R... through
test, mer
range.
Negailve
Tune or *.al.
1** aa *p I.
7
to
11
C400. GOOD.
vela.
ION he.
A
Otmar 1401. T400.
Open: C401, 1400. 1*4012 0401.
OSCILLATOR OM, Canned the mosey* lead el a hi hesalean re mem*, lo dm IRS. *Mee Sae. anal. Ma 7 Itew PMet 144 *nee Me pro. ead e/ Me emotive Had through a 100.1D0ohas *Mang madam la Me IRS mutilator tith 4 Dem 0e01 01 Use a mdtable meter range. sues as 0-10 vol. 01000 0. el neecrove add Tolman throucherri 1.. tuniew rms00 hid** mm The normal erld elmers elven M Me chad was mmtsure. M. a 20.000-alusraper-voll meek
3
SECTION .2
DETECTOR AND AV C CIRCUITS
AUDIO
CIRCUITS
CONAVP
cc1.54,i'M
hal* by Me
beam.) 4
R203,
00 opam.
INDICATION
1
S
anaMer melon, may cm* abnormal 10210,2,0 In Gs *Don.
ha
RP AND CONVERTER CIRCUITS
EAT
11201. and 1202
POSSIBLE CAUSE OF ADNORMAL NORMALINDICATION
Lout 01ecal100l..71.
Shored of 11*17 cam
00.0r MOO iretale through 0.0,010.0,01R201. MOT C200.
TRIM.
TAAA .,
3
Open: 1104. 1205.
Defecliv*: C203.
POINT
LI
HOU. 4?BOTTOM VIEW, SNOWING SECTION MST POINTS
RADIO TUNING
01040.,
Op..; TIM. RTST. T200. nay. TIT
Same as siep I.
SIG. GM.
A
halme hy I. to.** Ima.
12102.
MST
I
FIGURE 2. BOTTOM VIEW, SNOWING SECTION 2 TEST POINTS
Loud. clear *sal wIM *mak *nal 3
7,00 L/2
IL
7.17
-`.
.01000
a
=
01411
9
00
U
1/44,
CMS
WO,
4.4100 feetil
221311W
1.3*00
D ZA,Or.c.mg_N_
-
IF = 455 KC
4: Cr
;A)
1"2
001
4-
4, MO/
'CO'
RENA,
. ele 1c5 c5"
11
. arm
=
1.T.kkID
*
raor
4W"...., Moo
t
V
C100 1203
Li.4t001
am
1..
.04 CRY
MOO
GOSECTION 1
84
Op..,
loco* M aisoMer *Bon, asay came abnormal Indlcatlae to Mla me*.
Far the tests in this sectionu.s. pill.im pill.clan 000001)07.
moll. and correct the trouble in this section.
Open: 0000. 2301 pd. or me- B302. Shorted.
C30011, C301/4, C303. C303. I.
R -F AND CONVERTER CIRCUITS
voltage MID
op
AUDIO CIRCUITS For the tests
lotid. Mem *ad with 11.4.00. 011. Soma as slep
Section 4
-111- ve.we lath Sole. IS
TROUBLE SHOOTING
Section 2
C
fradcwriox
Trouble la MY meg* Mal* by the .m*4 tests.
3300 1,21.. sek. MOW Gwen. Tem ChrelllatIou at loslahMty may by am* by 0900 0101,
Cam, filament .1 ......... tam
Mgh sehthe
001404512 CAUSE OF ABNORMAL
MD..
A
3
.1401114A11 INDICATION
.
....' 00.. 000.0 ... '..... .4.01
A
1
Lim voltage
Open: 8101.
TOOT POINT
Leaky: GOIA.
Low voltage
Be ...Me
7.5r
A
PIOUIE 3. BOTTOM TIM SNOWING SECTION 1 TEST POINTS A fur this sea, is the same as that of test point C for section 4, the electiveness of step as a master check dopoodent upon the condition Cl certain parts in section 4; these 17111 111 listed below under POSSIBLE CAUSE OF ABNORMAL INDICATION:.
Since circuit lwation of mst
Trouble In thla s.a.e. Yes* by the lallselne testa. DelectIver 1171.3. Op.. CIOIA.
110
Section
if not, isolate and cornet the trouble M this section.
POSSIDIE CAUSE OF NORMAL INDICATION
A
1
4 (o( and wave.11 circuits):
FIGURE 1. 11210002. VIEW. SHOWING SECTION i TEST POINTS MM.
TEINT
MODEL 48-300
Section 3
POWER SUPPLY
POWER SUPPLY
PNILCO RADIO MODEL 45.00, SECTIONLITED SCHEMATIC DIAGRAM 10100100 MST POINTS
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO MODEL 48-461 TROUBLE SHOOTING
Section 1
For the tests in this section, use an rd signal
generator, with modulated .tput, set at 455 kr. Connect generator ground lead to .1 point B-; connect output Mud through condenser to test points indicated in chart.
and positive lead to test points indicated in chart. The voltage'readings given were taken
with a 20,000.ohms-per.volt meter, at a line voltage of 117 volts, a.c. Set volfime control to minimum. Follow steps in sequence. If the "NOR. MAL INDICATION" is obtained in step I, proceed with the tests for Section 2; if not, late and correct the trouble in this section. It -will be noted that certain parts in other sectionE of the radio are listed under "POSSIBLE CAUSE OF ABNORMAL INDICA-
Set radio volume control to nsuinsum.
If the "NORMAL INDICATION" is obtained in the first step, proceed with the tests for Section 4; if not, isolate and correct the trouble in this section.
It will be noted that for this section the circuit location of the test point for step I (the muter check), and also for step 4, is
MGM I. BOTTOM VIEW. SHOWING SECTION 3 TEST POINTS. fore, certain components in Section 4 may cause an abnormal indication. These components are ksted under "POSSIBLE CAUSE OF ABNORMAL INDICATION". the same as for test point C in Section 4; Mere
TION", since they may cause abnormal voltage
readings in this section.
...
PIGUSI
TUT
NOR IL
A
100y
.PODle.mcAnon
1
D
Ill.
a
A
11.
m awn CIO/A.
Detective 32T4. Loehr CIOIC. C201. or 1100.
NORMAL INDICATION
A
1
C
Load. clear Wool with weak W nal input Load. clear .anal with moderate signal WM. Loud. dear signal vrIth weal al, ml WM. Loud. Omar signai with weak shy nal WEL
stoned
CIOIS. D
DM... 31Til. Shea. 0101A. Leahy C1010 or 01010. Defective RIOS. Shorted C101. Op.. 81011 Leaky CIOIC. DelemInt 8I01. Driated 0301. Shorted C1010. Open 8101.
voltage
Movoltage
Low voltage
A
4
Shorted C1012.
No mho. Shawsol his. may b.. ....... be ...... 0101*. tuns ra 01010.
LIMmlas Twits
MT POINT
I
TrOuble in this sea... Relate by the tollowing tests. Low voltage
For the tests in this section, use an audio. frequency signal generator. Connect genet.
nor ground lead to test point B-; connect
If the "NORMAL INDICATION" is obtained in step I, proceed with the tests for Section 3; if not, isolate and tortect the trot.
TEST POINT
I
A
1000 lc
1000.
2
c
.00 lc
in.° hr
BOTTOM VIEW, SNOWING SECTION 1 TEST POINTS.
PISMIRE 1.
A
2
C
1
4
Isolate I, us. tat.w.a I..
Loud clear Wool with well w
Trouble In Mb modem
Moderate. clear signal with strong
Detective um. LS200. T200. 0200 or 0201. Leaky 0201 or
nal mut
.Meal eel
.
RADIO
Turn ham
D
1
0201.
0.H met NW
POSSIBLE CAUSE OF ABNORMAL IN
Loud. clear signal with emir signal mput. Loud, dear signal with
Trouble M OM section. Defective 141111.
weal .4... ....0.
La, shwa simni with web sig.
Defective TG.. 11101.
Loud. clear signal with weal &lg. nal WM.
Detective 8200. Open 0200.
nal eel
001.
R201.
or
SECTION 4
I
to
2
1000 lc
Open 0.0g.
Shorted m
Maly C400. Trouble In oscillator circuit We
sW 34
Defective 14AFT or L400. Open or shored C404 or 0101. Open 0400. R402. or 0401
Yobs.
ia. m Malan condemn lx
ramie
sectionS
IMO lc
Opm. shooed. or WA, NOT.
Negative
Isolate by the follow.
lag tests.
control
A
4
A
Delis -Dye T400 or LAMM. Or.. C401 or 0400. Shorted plates of Wing airmen WS
Loud. clear sigeoi tsitit
wok Weal LAM.
motion).
10,0.0prod end ol nem.. lead through 100.000, Connect positive Mad of high, seta.,.. d.vothemer to test point ohm Whs.. resistor to oscillator arid. Ms point D. Um suitable mei I mom. such m 0-10 yobs. Proper overtake Y oscillator Is hirlicated by ...um. voltog throughout ranee of wing coodeneer.
SECTION 2
SECTION 3 15.
701
OUTP111
2,01
ZOO IF AMA 3
SIG. GEN
note below.,
D
4400
Open 0301.
BOTTOM VIEW. SHOWING SECTION 4 TEST POINTS.
!OUR! 4. NORMAL IN
POSSIBLE CAUSE Or ABNORMAL INDICATION
NORMAL INDICATION
DACIUND TO CHASSIS TOR LCOP 01140071011
Detective 14077. Dehsollve or udeallimed 1400. R300. R401. m RIB. Shorted C301.
DIAL SETTINGS STEP
ble in this section.
1
Shorted
001. Open 8100 or 8101.
If the "NORMAL INDICATION" is not
obtained in step I, isolate the trouble by proceeding with the remaining steps.
each step.
TEST POINT
Shorted
DelectIve NO UM It ompLL Opee m Maim C3011.
G04. Misaligned /NIL
Set tuning control and signal -generator frequency as indicated in &art.
output lead through .1-nif condenser to test points indicated in chart. Set radio volume control to maximum. Adjust signal -generator output as required for
STEP
Doloctive YID mud It anitpL) or 113113. Oise. 8303.
-
lion of the oscillator test. use an of signal generator with modulated output. Connect generator ground lead to test point B-; con. nect output lead through .l.mf condenser to test points indicated in than. Set radio volume control to maximum.
TROUBLE SHOOTING
Trouble I. MD meta DOW by Om billowing mem
TROUBLE SHOOTING
Section 4
For the tests in this section, with the eacep.
Section 2
POSSIBLE CAME OF ALIORMAI INDICATION
STEP
POSSIBLE CAUSE OF ASNOBNAL INDICATION
04,0;cemor4
No voltam 3
VOTTOM VIEW. SNOWING SECTION 1 UST POINTS.
I
ASNORNAL
121.
TROUBLE SHOOTING
Section 3
For the tests in this su-tion, me a d -c volt. meter; connect negative lead to ten point
7200
SOAS
RA
01101
V 1(0441
144FF
100,
0141
CIO,
COS
hl
2z0MlIII
220
I
0[T ICS
0
00
Mr
L400
050
o4
§§ I
41,000
41403
RAN
(404
38
10301
10,030
2200
'4..
it
0211E6
ems
1.100
am,
AERIAL 1 OHM
VOL
COOT
I.F. 455K C
1
=1;7;
C401.4
35,1100.
PART0.103 IE c
NOTE. SYNEOLIZATION
AND
TERIMAJLOGY
All COMPONENTS N THE RADIO CIRCUITS ARE SYMBOLIZED AND LOCATED AS FOLLOWS:
T400
a
rot
es,
I- PILOT LAMP 1. CHOKE DR COIL
coo
4(00,00 COIL
,loon
ReT31,0R 33ro
C MUMMER
C
220
LA -LOOP AURAL LS-LOUDSPEAKER
R P2515TCP CONDENSER
5
SYMBOLS
T
. 1{I
I
FRED
VARIABLE
SWITCH TRANSTOISIER ELECTRICAL ASSEMBLY
103 -SERIES COMPONENTS ARE IN SECTION
S/00
C/0/C
21141
20 111
150.000
res
200 MKS CONPONENTS ME IN SECTION 2, TIC WOO
PAWNS. SECTIN S.F AMPLFIER, DETECTOR, AND A -Y-C CIRCUITS. 400- SERIES COIPONENTS ARE IN SECTION a, THE AERIAL, 0-0, APO OSCILLATOR CIRCUITS.
300' SINgS COSPONENTS AEI
COM
l0102
I, THE /OMR
SUPPLY. I
ELECTROLYTIC
--0
W/00
afff. !BPI
news JOAS
701
707
144e
t
7C6
0.0 , 10, ANO MAIO 516NAL PAIN 05C WAAL PATH ILL RESISTOR W1.1115 IN OHO UM.LS1 OTHERWISE YANKED.
I/Or
PHILCO EADIO MOBIL 40-461, SECTIONALIZED SCHEMATIC. SHOWING TUT POINTL
SECTION
1
85
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO -PHONOGRAPH, MODEL 48-1262 Section I Fm the
tests in
voltmeter.
d -c
TROUBLE SHOOTING
SeciSon 3
this section, use
Connect
-r1
a hoe
at
signal generator, with modulated output, set at 955 dc. Connect the gen. warm ground lead to the B- Ism, test potat B; connect the generator output lead through s .1-rof. condenser to the test points inditated in the chart. Se the radio-ph switch to mdso. turn the volume control to maximum, and . the tone control fully clodtwise
i*.f
the positive lead to the test points indicated in the chart. The voltage readings given were taken with a
20,00o-ohnu.pet-volt meter,
voltage of Ill min, at.
With the radio -photo switch set to the radio petition, turn the volume con. not to minimum and rum the tone con. nol fully clockwise. Follow the steps in sequence; if the
1[717
If the "NORMAL INDICATION"
-
Figura 1. Bottom View, Showing Section I Taal Points b "NORMAL INDICATION' 0 obtained in step I, proceed with the 0o0 f0, Scathe 2; if not, italue and torten the trouble in this section. P7112 A
OCCATIOW
1.028241.2 QUM OF /11/10104.1.
114012ATION
in,.
ithm this eon Isolate by the following tests. Defer.. 50%6.5100, W100. Shooed: 0101. C103. Defective: 5006. Open: 0101, COO. Leaky: C101, C1112, C103A, Cle3B. Open: 0100, T200,4 8204.. Shooed: C103A.
High vollege. No voltage. D
Low rel...
1111v.
Open: C103A. Leaky: C103A. CM.. Shooed: C10314.
Lew volts.. Nigh .ohm..
161v.
is °bunted in step I, proceed with the tea for Section 4; if not, isolate and torten the troubk in this secti. Elmo. 3. Bottom View. Showing Section 3 Teat Print. 140TE: Since the circuit loonottion of test point A for this section is the same as that of test Section 4; these puts are hoed below under "POSSIBLE point C for Section 4, the effettiveness of .p I as a master CAUSE OF ABNORMAL INDICATION." check is dependent upon the condition of certain parrs in
,
MP
22122 'MR
ROOM 1211:40111081
1
A
1...hdr4 d3. .4.1 ." ....k "..I
Trouble Milin this war. Isedate by the 1,11.01,;t. man
2
C
laud, eke, signal with strong sl.
Delealve: WIL 1111 (2441 a.), 1C.6, Z301. Open: C382, C.306,
1
D
Lad, clear Op. with mod.. Defective: 101 (la Li.). Open: CM, 0301, CM, OK R301.
.
4
A
Laud, elclaysig. will weak alum!
Section 4
TROUBLE SHOOTING
14A77,*
22.4.
Op.: Ram.
Misaligned: 2303.
11401.i
TROUBLE SHOOTING
For die If. th thIS SOC11011 (with the exception of the oscillator test), me an 0.1 signd generuot with modulated out. Pot Connect the genetwor ground kad
Fot the tests in this section, use an Con.
audio -frequency signal generator.
R303. Shorted: C303. L.I.: CEO.
Dulretive:
Input
This Port, looted In another sealers, inr men thisonnel .dirati. In this role.
This pow lamed in .other sec., may rause abnormal indication in this section.
241220111 2
0200, 11302. Shooed: 0501, C.3136. L..: C.3412, C306.
ripe) topic
.
Open: 0104,4 T110.. Lisie ing Tea: Abnormal hum may be caused by open 1,103A 1.3030, or 0103.
POS.. U.S. Of /81104044.4 DITHOWITIO.
.sal input.
Open: 0101, 0304,4 T100.1
Highnovrt.17.6e. A
CATION
Trouble
No volts.. i-40 volute
514..
TROUBLE SHOOTING
Fos the reso in this section, use an
the
Ind to the B- bus, test point B; con.
nett the generator ground lead to the B- hot, 000 pot B; connect the gen. erator output lendthrough .Imf. con. denser to the test points indicated in
the B- bus, mu point B; awn.
the genetwor output lead through . .1-mf. condenses to the teat points ,ndi. cued in the chart.
the chart. Set the volume control to maximum.
Set the ndio-phono switch to radio,
turn the volume control to maxi..
and the tone control fully clocwise. Adist the signsl-generwor output as
and set the tone control fully clockwise Except as noted for the oscillator Erse set the radio and signaEgenerator dials M 340 Itt
required for each step.
If the "NORMAL INDICATION' is obtained in step I, proceed to the
MU in Section 3; If not, iklate and correct the trouble in this seat.
MP
g.,...
ROM. IRDIGTIOW
TUT POOR
I
POO2223.1.110 OF ASIWOOSSI 201314210W
di.' '',0'.! 0" ...k .i...'
1
A
Loud. input.
Trouble within this action. Isola. by the following teas.
0
C
Loud. clear signal with strong sig. nal input.
Dekenve: 35L6CT, L5.200. TWO. Shooed: C303, C201, C304.
U.') d'''' .i...' ." ...k.'..' nput.
Defective: 103. Open: C203, 11203, 0201. Leaky: 200.
D
3
COOS.
Leaky: C202, 003, 104, C205. Open: 8303,
input.
'wow,
I Route 14200 through ha
1
MIMI. GP= of.ABS/OZPUSS 040111014
WORM. EPIPIOASION
LLoud,ccar'0.a .6 soak .4.d Trimble within this mai.. Isolate by the follow.ins I.e. input
C
I-oud, el. withal with week signal
c.a....) 1.01, see dee..
Negative 32 . 41 veld.
Def.:tin.: 1300. Open: COOL C482, C48(T, WWI, 8443. Shona.
Loud, char sip. wish Iv. sta.
Defective: LA400. Shooed: C400, CANA, C882. C488. Op..:
input.
CA07. Leaky: CA07.
Open'.
0107. 0400 Shooed:
D
ffi..N... see o.
CA00, COMA, CAOL CAN, CA05, C406.
below.)
4
A
input
Defeo.: WOO. RM. Op.: C281. Sisee0f2: C.18ID.
0403. 0404. Leaky: CO®. CA04.
OSCILLATOR.TEST NOTE: Cannme positive Ind d higliredsisme d< vollan.r to 0- boa, tail pant [NOWms pr. end 61..0. had tbreugh 100.000.1. isolating retem. to incillat r grid, tea point D. Use suitable meter rem., web os 0-10 nehs. with 30,00.bmpenwelt 0000)
listening T.: Distooion . strong signals may be caused by shonwimuited or lathy C201, or openefrotitad 8301.
Peeper operation of oseillsior el...bout range or toning rootrol.
This Pa% located in mother seetion. may ram shoo.n.l indication in this section.
1141430LEUIT1011
MOW somas flap
...,. A
11304.
Loud, dear signal with 'reel .1.0.1 0
4
,....,
RT
IT NO WOO SOut PATH
The components ut
ILECTRY TIC
techo
0S0,44TOT
Hu roans
KS NHS'S. WAYS Ir MRS RUSS OTHERWISE
:mammies the ry. ol part m C-rawdasier LA-loep
WI(
PHILCO RADIO -PHONOGRAPH MODELS
lamp
am symbolized ...sr . i1P.
the radio in whith Me pang ea h.. 1. pin. 19
T-
-
2--ewitcle T-wanWen
0. -tram
d
ORR
nail
WIS-Relee *Web
w_pee e,and es,. plW 2-elect.el ammalif
/
48-1262 (CODE 122) AND 48-1282 Model 48.1262, Code 122 is similar to Model 481262, Code 121 with the following exceptions:
Section 1 11IO2
Section 2
is 150.000 ohms.
The .05-mf. condenser between the changer chassis and the phono-cable shield is noosed, and is connected between the changer chassis and the radio chassis The condenser is now located on terminal scrip attached to the calsine1 A Emegolun resistor is connected across the crystal pickup.
A .01.1. condenser is connected in series with the low side of the crystal pickup and the phono-cable shield.
86
C200 is removed, sod the cable shield Is connected k
I L
13-10 RECORD CHANGER CHASSIS
directly to B..
C205 it .03 of.
tca
Section 3 0302 0 130,000 ohms.
.co
saes
.114011
If,war m
z'Fra
Section 4 INV
0400 is 150,000 ohms.
Model 481282, Code 121 is similar to Model 481262, Code 122. except for differences in the record changer and the cabinet.
info
SECTION
I
.o
trw taken sle
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO MODELS 48-472 AND 48-472-I C,I4oR1
Snd
vorr
'AV
I8 81 LDS
J
ton.
£
010
eA
MAI
PIC
sin 403 ..010
COM
aw
.....
US
....
- .....
......
1ST
eft
If
AM a 4951SC
/MUG
w
*rim
mxr
AM ALIGNMENT PROCEDURE Make alignment with loop conoeaed to radio. AM alignment should be completed before making FM alignment. OUTPUT METER-Connect between terminal 3 (voice -coil connection) of aerial terminal board, TB400,
Jul
rrn els
010
and chassis.
SIGNAL GENERATOR (AM )-Connect as indicated in chart. CONTROLS-Set volume control to maximum, rum m on radio power, and set eon control to counterclockwise (treble) position. Set wafer switch to broadcast position. OUTPUT LEVEL-During alignment, edjust signal -generator output to maintain output -meter indintion
**UT:
below 1.25 volts. "'RADIATING LOOP (steps 2 and 3): Make up a six -to -eight -turn, 6-inchdiameter loop, using insulated wire: connect to signal -generator leads and place near radio loop.
FM ALIGNMENT PROCEDURE Malin AM Alignment First. OUTPUT METER (used only in step 3)-Same connections no for AM alignment. D.0 ALIGNMENT INDICATOR-Connect 20,000 -ohms -per -volt meter across 5-mf. condenser. C319, in FM detector circuit-negative lead to pin 6 of 14X7 tube and positive lead to B-. Use 10 -volt range. SIGNAL GENERATOR )AM)-Use MODULATED output for entire alignment. Generator must have sufficient output to give d.c meter reading greeter then 8.5 volts. Connect generator ground to lead II -1 conoect output
terne
ere
Ind es initiated in than.
CONTROI9-9eme settings as for AM alignment, except wafer switch, which should he set to FM position. Allow radio and generator to swarm up for 15 minutes before starting alignment. COILS: In steps 7, 8, and 9, the resonance of the circuit. using coils L400, L402, and L403 ADJUSTING may be checked by the use of powdered -iron tuning core, such os Pm No. 566100. If the sign! strength (meter reading) increases when the it end is inserted in the cod, compress the turns slightly. If the signal when the brass ends inserted, spread the turns. If the signal strength decreases when either strength in the brass or iron end in inserted. no adjustment of the coil is necessary. Do nor spread or compress turns excessively, since only a small change is required at these frequencies. Oscillator coil, L403: Adjust coil for maximum maer reading. R -f coil, L402: Adjust coil for maximum meter reading while rocking tuning control. Aerial coil, 1.400: Adjust coil for maximum meter reading. meMenix arri. (WO., 1.0eff news. e mom neon' IIVRIS f ,MOT OSED let sr./roma...as OUVIS
AM ALIGNMENT CHART RADIO
SIGNAL GglIERATOR STEP
AD/UST
CONNECTIONS TO RADIO Gr=d,...Ird,r.z,11-; output leamr sod
I
ospor
terminal
DIAL
DIAL SITTING
SETTING
455 ke
540 kr.
SPECIAL INSTRUCTIONS
Adlu.strorniz ONCE.. ONam LY. in the or
-.-
C30211
C301D
of TB/01.
I
or
C300C
TC300
_---
-...J.9s, , _. .......:17,
,..-.N
2
Radiating loop tree now i.
1600 kr.
1600 kr.
C413A
Adjust for masimum.
-
r
.
41401*.
1500 kr
Same as step I.
1500 kr
Adjust far m
C4I3B
um
so
i
P. CONNECT
Figure S. Top View. Showing AM Trhonnw Locations
FM ALIGNMENT CHART RADIO
SIGNAL GENERATOR STIP
AINUST
CONNECTIONS TO RADIO
Through .1-nd. condenser to pin 1 of I2AW6 tube (test
DIAL SITTING 9.1
me.
DIAL SITTING
SPECIAL INSTRUCTIONS
88 rec.
Adjust for maximum dr meter tending: no-
r= :!,..'dt:117peXTUZIMf= After this neg.
Point El.
improvement
no
Through .1-mf. condenser tube Item 8 of 1408
88 roc.
do not touch any of these trimmers ex rem C301C (in Rep 31. Adjust for maximum dr meter reeding; eo untrue rignel to mairtain app. .coney 10-mIt reading. Repent until no further improvement 9 noted. After this step do nor touch these trittmen.
Same Is step 2.
88 me.
Double-check adjustmenc of C3O2C to make
oint C). pia
certain that minimum audio output is This is critical adjustment; Kum trimmer very 11..8 Maximum do meter marling. This is the "dilator high -Regime, trimmer adjust cabmined.
To pin 3 of J400.
105 err.
105 inc.
Same as step 4.
105 rat.
105 loc.
Adjust fur maximum while rocking
Same as step 1.
105 roc.
105 tiff
Adjutt for maximum.
92 tor.
92 rec.
Saw es step 4.
92 inc.
92 no.
Adjust L403 Ism ADJUSTING R -F COILS). Mikan 1,402 Ism ADJUSTING R -P COILS).
Same es step 4.
92 enc.
92 am
Odium L.400 Om ADJUSTING LP COILS).
Same at step 4.
9 10
control.
Repeat nem 4 through 9 until
o fusilier increase is obtai ed.
axe
ref
MO
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS MODELS 49-S110 AND 49-500.1
PHILCO RADIO Section 1 -Power Supply
TROUBLE SHOOTING Section 3-1-F, Defector, and A -V -C Circuits TROUBLE SHOOTING For the tests in this settion, use an 6f signed generator, with mod. Mated output set to 455 kc. Connect the ground lead of the signal generator to B; connect the output Ind through .1-mf. condenser to
For the tests in this section, use a tl.c voltmeter; connect the leads to the test points indicated in the chart. The voltages shown were taken with a 40,000.ohms.per-volt meter at line voltage of 117 volts, (10 cycl..
the test
Turn the volume control to mini.
con,
540 kr. the
DICATION" is obtained in step
'NORMAL INDICA-
ceed with tests for Section B (audio
isolate and correct the trouble with. in this section.
circuits); if n, isolate and correct the trouble within this section.
A A 2
ie 9
My
C0B
115,
I
ION
A to B
se.
0 to
3
F1490111
NORMAL INDICATIO
TINT POINT
I.
BOTTOM VIEW. SNOWING SECTION I TEST POINTS
erre
AlNON
.lawro.o voltage
Tree. .01a 0. 100.0 lroloie by Ile lollo.n. Nets. Deter.. 51150T Sher.. MIA.
Ne
Mara C1010.
Debectly0 35LSOT.
L.7.04''':;:i.e.
Open,
03111101111..
c.o.., C10114 or
1100.
BOTTOM VIEW. SNOWING SECTION 1 TUT POINTS
NORMAL INDICATION
POINUALE CAME OF Al1011/101 INDICATION
mow Sped.eh owl nenoreon
1 no. WIttls GIs secNew 023001. be O. 000521 a.-
werlor MO" Scow to wee
1
Same as Woe
I.
No Wpeal-Opea or Jar.% MOO. 204..0 ION or 14A7. 0000, R301. Elbe.d, C303. We. es dladerted Awed Lani0 C505. 0.0 CND al C3114. DelectIve. ICI. or 111A7. 141050.01. 1300. ....or .. Oren, 0400.
LMEIT C1010.
Leaky: 01011 es CND.
Open, RINI. Toon
0
R204.
No Wad -Owe er We., 7.301.
Lop reNwe
Section 4 -R -F and Converter Circuits
clads. or 0101C.
TROUBLE SHOOTING
For the tests in this section, use
Section 2 - Audio Circuits
TROUBLE SHOOTING
in r -f signal generator, with mod -
dated output. Connect the genet. ator ground lead to B; connect the output lead through a .1-mf. con-
For the tests in this mcdon, use an audio -signal generator. Connect
the ground lead of the generator to B; connect the output lead through a .1-mf. condenser to the test points indicated in the chart. Set the volume control at maximum. If the
denser to the test points indicted
in the ch.. Inspect the tuning condensers for bent plates, dirt, or poor wiper con -
"NORMAL 'INDICATION" is ob.
m) or all of these will came If the "NORMAL INDICATION" is sox obtained in step 0,
tafined in step 1, proceed with the tests for Section 3 (i-f, d.ector, and 00, circuits); if not, isolate and
noise.
correct the trouble within this sm.
isolate the trouble by following the
tion. FIGURE 3. SPIED
NORMAL INDICATION
.....' ....r Wad .5th
m... im. ..
A
1
3
0101 .1.1 will
C
DIAL REITRIGM
.....' W.
rival. am nu wessa: nom. sr ow woo*. woe. No signal -0.a or oborled. 10000 or T200. Shoe.: 0203. Op.. 0204. Delectlern 5005. Weak or 4100.4 elestal -
540 kc.
U
501700 VIEW. SINDWING SECTION 4 7111 POINTS
NORMAL INDICATION
RADIO
POMMES CAME OF
ABNORMAL INDICATION
Clear 0001 or. .00 etwoLfelde
540 lm
war togas 540 to
D
2
1001 lee° see
Nenathre 9 to
1020 10.
volts.
540 50.
Gam. 0 00,
12
S... I.M.
540 M.
C
...eelWed -open: C201. Weak et dimeledSheal-Loalmt
I.
.o ..00
Opens sbosemb TAM. C402. or SM. Mberied, 05
N9TER.. -It. 0. tnt...;;.....711
22.4 *owl -Shard or mom LAMS Drs .0 7AL
.;2111.
NO elwal -0.0 MIL Dolectl/1141101. west 00I41.5.1.4 egad--5hw1.d: L120. Open: A o sloi..- Oors, moo. mono. MOOD. Weak or 0110oned
Same on step I.
Treadle erSida 014 A*: laelal by 454 by.
CAM or GOO. DeleaSem 702.
node 105001
1:0500101 SOR5 or 10020. Leak, 0200 or 0301. Open: RUM.
. ....., I. A
MO. OEN.
A
1
weak Seed.
S. w Nep 2.
D
O
TRW POINT
STEP
PONAGIF CAUSE or AMIORMAL INDICATION
Almtrallor 0000
MOUSE 0.
remaining steps.
SOTTOM VIEW. SNOWING SECTION 2 MT POINTS
T1252 POINT
Week sr dleleNed. NM
nal -IllealSgeed: 2301.
Skala CIOIC. 4alry, CISIC. Open: I.M.
No voltage
Mob role tioame Two Almon.. we may be oomost be omo cone.
TINT POUF!
OF ABNORMAL INDTION INDICATION
POSSIBLE CAW
INDICATIONLRMA
1.45 reN.le 4
1,
proceed with the tests for Section 4
TION" is &aimed in step I, pro-
STD
5E5
in the
:hart. Set the volume control at maximum. If the "NORMAL IN-
mum, and set the dial pointer at
If
points indicated
400 5.
A
O
Ilame 0 .p I.
MO kr.
Weak elartrd-0010 C401.
OSCUJATOLIZST NOTE: Connect 00.000. lead el a 20,0000ltmepwvolt aWer 0 0: Mumn prod end at nasal. Mei Gewalt a 10.00101. 50100.1 0woor to .1 wain D. Pee. operattee a *lbw 1. ted1001.d bra Aegative ..YON el 9 0 IS sale
Nowl- Own: 11200 Swale Growah roasel.
00, mane ol roakep aredwaer.
SECTION 4 -RF AND CONVERTER CIRCUITS
SECTION 3 -IF, DETECTOR, AND AVC CIRCUITS
OrtO2e1Osir,:ig
JO EN
nut
r
-
-
.CRLOI
SECT
N 2 -AUDIO CIRCUITS
mar ALT
OAS
.4.1r 00
vi a!
11
'41
fl4.00
1150
BLACK
100,000
See
ATOI
CMOS
RED
T0310
020
5.10/
1l
p
1)0
At"
x`4.11'
MODELS 49.500 AND 49-500-1
I F =455KC
r-
coe0.-To-itirt- --, -1
1-7-711.1f0r, 5M 0.05
RE51 0XE005E. i_IMAIND
AN IA055
IMO
#
#
VARNA/ IBMS ElECTROCLILIC
NOTE: ALL 1101.15403 AW CAPACIIT ANO 55301ANCE TALLIES DONN ARE 5000140, TM VOLTAGES 11E100111 TEST PONT INO OMER POINTS INOICATIO 911111 MEASURE° BID/ A 20,000-ONSISKSVOLT NETER VOLUME 10,111101. Al 410111014 AND TUNING
MODEL 49.004
Mho Model 49-506 is
011111
100 10501 PLAITS rciar etsarn
MO
Sad
5.tube superheterodyne. This set employs the same dumb as dun used in Models 49.500 and 49-5041, but is housed in new -style cabinet a
which is supplied in either of two finish., walnut or mahogany.
Several Philo° 5 -tube radios
\
use circuiteeimilar to the model
illustrated.
S045
Such eimilar sets
F411
MAI MN
area Models 49-501, 49-503, 49-504, and 49-505
SECTION 1 -POWER SUPPLY
88
P11100 RADIO YODELS 15.500 AND WIWI. WOODWARD
C 01045,0, SNOWIDO TM POINTS
-
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO MODEL 49-602 TROUBLE SHOOTING
Section 1 -Power Supply Connect the negative lead
a
B-, test point B; connect the positive lead to the test points indicated in the
'IRMO
,e4OP
The voltage readings given were taken with a 20,00tNahms.per.volt meter ata line voltage of 117 volts, a.c. Set the volume control to minimum. 'She battery pack should be replaced
TROUBLE SHOOTING
Section 3-1-F, Detector, And A -V -C Circuits For the tests in this section, use an r -f signal generator, with modulated output, Connect the generator set at 455 kc. ground lead to B-, test point 13; connect the output lead through a .1.mf. conden. ser to the test points indicated in the
Make the tests for this section wi h a d -c voltmeter. chart.
chart.
Set the radio volume control to maxi.
F
If the "NORMAL INDICATION" is
when the "A" voltage drops below 5 volts, or the -8- voltage drops below
obtained in step 1, proceed with the tests for Section 4 (r -f and convener circuits);
60 volts.
If the "NORMAL INDICATION" is
Rears
if not, isolate and correct the trouble in
Se* 111e, Skewing Sectlen t Test Palate
Satiate now) Shewigg Set" 3 Test PM.
Flynn 3.
this section.
obtained in step 1, proceed with the tests for Section 2 (studio circuits); if not, isolate and correct the trouble in this section.
Toprovide a complete i-f amplifier check, test point A for this section is placed at the grid of the miser in Section 4; therefore, the effectiveness of step as a master check is dependent upon the condition of certain parts in the 1
POMP
NORMAL INDICATION
Ile)
A
72,
100
C
DM 120,
TOM
SIM,
D
Deleetlem CRIDO. Op. CIOIA.
'SM.... 02IBB Owen, coo. sm.
Low solemn No roboos
Changed matelame: RIM. Leaky: GIOIA. Open: 0100. Marts. GIOIA.
w
7.3v
C
SIM
clear
moocher
output yr.
Trouble In cols sostlem Isolate by Me following vote.
weak genemsor Wpm. Loud.
C
0
ck.a.
...taut sr. mesas.
IT4. 103 011ede eemleel. MlealIgned. 0001. Open: R300. C303. L301A. R301. L301/1, C30IA. Shorted: C30011..03.
DeMerleel
Levet.
L30IA, LOOM, CMIA. C301.
open: 01010. 51...t.e. mate.
low voltage
Changed reeMbartm R10111.
Melt wham venom.
I
Loud.
A
Cheueut ...um RIOIA Leak, cims.
...wry
.,,,.
POSSIBLE CAUSE OF ABNORMAL IN
NORMAL INDICATION
TAT POINT
1
No eol1age
weltege a
Isoh,e by the following mete. STEP
Log vol.,.
Me
4
mixer circuit. Thee parts arc listed below under "POSSIBLE CAUSE OF ABNORMAL INDICATION."
POSSIBLE CAUSE OF ABNORMAL INDICATION
Trouble la NM seeks..
MOT
0
3
ABNORMAL INDICATION
Delectleel lOr. Pfleallgoods 0300. Opera 0300A 00000. 03003. C3002. T400.. Ober.: C4100,. 04001, C300A. LONA, L30011.
1.
Open: MIS 2101.
C30011.
rodemeem 11102. Leahy: 01010.
Low vellage
Mak voltam
Same as stop
A
3
Opom 0.. w ware Momenta. ROM -.No
Thle part Meg. le another mgr.. may cause abnormal Indlcallon la MY mars.
Oem,Changed Ater. Tsar. sloo.
Owe: RIB. 0101. Shorted: CIOIC. Co *nee LIMeMe 'M.. A.m... Mae mo he ranee. by open mots. CIOIC or C002
This peel Iota* M another rem.,. may cave* abnormal ladlcatlon le OM section.
For the tests in this section, use an Con-
signal generator.
audio -frequency
For the tests in this section, with the sxception of the oscillator test, use In r.f ignal generator with modulated mamas. Connect the itenerator ground lead to B-,
test pot in B;
nect the generator ground lead to B-, test point B; connect the output lead through a .1-mf. condenser to the points indicated in the chart.
TROUBLE SHOOTING
Section ai-R-F And Converter Circuits
TROUBLE SHOOTING
Section 2 -Audio Circuits
connect
the output lead
through a .f.mf. condenser to the test points indicated in the chart.
test
Set the radio volume control to maxi. mum. Set the tuning control and signal. generator frequency as indicated in the
Set the radio volume control to maxi. DIMS.
hart.
If the "NORMAL INDICATION" ss obtained in otnp 0, f..11..o.. should
If the .NORMAL INDICATION'. is obtained in step I, proceed with the tests for Section 3 (i.f, detector, and a -v -c tie. coifs); if not, isolate arid correct the trouble in this section. STEP
TM POINT
I
A
Figure 2.
NORMAL INDICATION
Load. clew weaker output wIth moderate generator lapel.
Clear speaker aulers1 wIM m ow. gergrolor Input
C
2
..
POSSIBLE CAUSE or ABNORMAL INDICATION
.we. 304. 18.100.
opts:opts:R2114. 1200.
TIMT
SIGNAL OEN.
POUR
F ILLOOSMCT
RADIO TUNING
NORMAL INDICATION
I
A
1000 be
Tone to shynaL
Lend. clear epeaker
Shorted. C203. 0204.
le
another ma
Open: 0200. 8101. 11202. 0203.
CleDIOrm.
2
lad
1
. M1igh re
issue mhm
FOR LOOP ONECOON C401
/
1016
to
3
in as step
Tune le elostaL
Tolt17.e7ain)Ichre7::;',;'i'vern 71'e 7.1,:tn(ZeTt:dtt
(Pm
Trouble M Ma motion. MIloging logs.
,
SOCKET., CAPSOISME
1.
Ito
1005
E
"4 /.
CONVERTER
0403
/
/
"1 the IRS). mac pilau
z,#'
1,s4 a suitable noel
900
15
IF V.PL 460 0
/
03014
00
2'00
§4dilsE
030/0
2 045
era
§ mtOW
2
17e
#40
by Me
Open: C401. Co.4 0401. 8403. LA400.
2301 90V
Isolate
Opera 11402 0400. Delocove: IRS. C401. 04000. C4000.
SECTION -4 -IF, DETECTOR AND AVC CIRCUITS
r
0,4I00 3 CMOS
ABNORMAL INDICATION
weak
soh.Shorted:
through
Meg..
IMO Ia.
A
2
SECTION 4 - RF AND CONVERTER CIRCUITS COMET 10 04kS5IS
Rotate
Mgr Me note
Negative
below./
Dietorgoe at sinea
ma- ranee abnormal Indlcaton b thls meSon.
OSCILLATOR TEST Convert Ihe psi'
sellb
Poem. Mnt.
signals way he can* by Maim or .bored C200. 'Ted oar) located
output
C203. moo.
LIMenIng Tab DiMortlan may he moved by Maly et eh* C203, or by changed melstaane of 0202.
POSSIBLE CAUSE OF
STEP
Trouhle M MIN eectlow. Isolate by Ma follogIng win.
Defective: MM. R2.00 DoIalel. C203. Shorted C301. C30IC.
/Mew ee Mel, I.
A
cone. Oleo, Sheol, SecIMe 4 Teel rm.t. Neer* unnecessary; if not, isolate and correct the trouble in this section. If the trouble is not eeeee led b, the USIA for this section. check the alignment.
Safgem new. Skew. Se-411es 2 Teat P.I.te
Oi'LS
TO
L
74c0 8302
2.2116
0305
:r;
B
IF -455 KC
.101
B au
D
F
WOO
ENIM
0205
C
aoakc T200
1125
655
SV
4810
01000
R10//I
9100
31,0
AMPL
ounRir
4021/5
1ST Al./010
c strop
(PART OF C201
R/02
L52001
5V
N
2200
B
`T 55T
010
A 1/1/NL- Al 3141
IT!
R/5
IRS
A tn
+-1
CCeDENSER SYMBOLS
FIXED
wtit
1RIAMER
#4
a-
rtf 00
Pi-
eta B
1
(PIN VIEW)
PL/00
ARABLE 0214.1.1710p
R007
270
FIE, IF, AND
(PART OF CICO 30/A
Auto %NA_
ALL RESISTOR VALLES
I
PATH
IN OHMS MISS
I
-4.- OSC saw_ 00.,
Philco Model 49-601 is similar to Model 49-602, presented on this page, but is designed for use with battery power only.
2201 A
r4
MIMI% MARIO
SECTION 2 -AUDIO
SECTION 1- POWER SUPPLY Mee Medal 404111. feettottallmi
Olo.rom. She*. Test Pet.
CIRCUITS
89
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO
MODELS 49900E AND 49.900-1
signal generator, with modulated output, set at 455 kc. Connect the generator
For the tests in this section, use a d.n voltmeter. Connect the negative lead to
ground lend to B-, ten point B; cooncr
the B- bus, text point B; coned the posi-
the output lend through .1 -cat(. condenser to the test points indicated in the
tive lead so the test points indicated in the chart. The voltage readings given were
dun.
taken with 20,000 -ohms -per -volt meter, at a line voltage of T17 volts, ac.
Set the radio volume control to maxi -
If the "NORMAL INDICATION" is
Tu. the power switch "on," and set
obtained in step I, proceed with the tests for Section 4; if not, Mame and correct the trouble in this section. Since the circuit location of ten point MIMS 1 SOTTOM rim. SHOWN* SACTION I TUT FMK. A for this section is the same se that of test point C for Section 4, the effective. ness of step I as master check is dependent upon the conclitioo of certain pans in Section 4; Mete pans are lined under "POSSIBLE CAUSE OF ABNORMAL INDICATION."
the volume control to minimum.
U the "NORMAL INDICATION" is obtained in step I, proceed with the Senn for Section 2; d not, isoLne end correct the trouble in this section. NORMAL SIDICA11011
MR POD.
REF
HOURS I.
BOTTONI VIEW. SHOWING SECTION I DIST POINTS
ABNOSMAL DID1CAMON
POMMELS CAMS OF ASNOMIAL INDICATION
al. 3314. M100. SIM. arm, MINA.
en
Lao we... IA. No Tam
11. von
tow
GMM
AA Tana
Ma. CIA.
Lod, CIOM. ClOOL. 0103.. Morn. CIMC. Opens 1101.
Lao ye..
.1-nif. condemn to the test points inch cued in the chart. Set the radio volume control to maximum. Adjust the rignaLgenerator output
A C
D
T
A
4
MONIS L
SOTTO./ VIEW, SHOWING scnoso I IBM POINTS
NOM. INDICAMON
001T011 VISM 4110.11. SCION 4 TEST POINTS
A
1
POSONS6 CAD. OF ABNORMAL MDICATION
Clear Basal .I. anon Mord Leer.
Mr en M. I.
C
D... SOLAOT. TIM LIMO.
M.a or baby. OM. CHM Oe
I
SAM. RAM.
D..* NM. paled m Hal, C101. Oem, am MM. 001.
441.1 AO Sep I.
Na. Ran. RIM Much mega
DIAL IMERSIDS
Tarr POMP
Lead. do. 410.1 .6 me. dli Tram *Mb 11. mares. ban. In Sm ...al ... lay.
OILINO
me be
SM.
larri.
MC k
MO La
.3 Sr.' an Sep let .....' 1.
Oen Tea Doe sae baker.1
3
0144411103 MIL
0404. O.. COL CAM 0425. CAM. CUM.
SM.
D... Merle. C403.
M. cm M.
Op. m
OSCILLATOR TEST: Comers positive to of a Dieb.re... voltmeter a B. rent mint B; roamer, prod and of =Dalin lord arid, Mmol. M.M.M. a.... *met m RR, point O. Um ennoble rune, such u0-10 toIct. Proper operation of °mi./et la indicted by rm... arts.. of 1.. 3. (connetred 30,1300-....m.volt an.) ...On. roadtomrs.
SECTION 3-1 41 DETECTOR, AND A V C
1173
t/.00
Moen., W. beau.. lam, Open, GM um. Pm* S e. dent Me M. A
14111m. CM len
A
INDICAMON
Near de* eta heal. *Ma OD maw Hot. by .
n...a.. en .,. IA ens, D4444114. IAN On.. Kw SIN. CMS en IS vet
su kn.
13
POW= CAMS OF IMNOMOLL
NORMAL ocorAnon
0111. 0111.
Delm-erre MM. Mar. m Dal, C7110.
SECTION 4-RF AND CONVERTER Wit
zIm
IMO PAK
ler
7103 4701113E
P.M, 4.
LOCATION OF C401 SHOWN IN PIOUS/ II SIM
sine
N
TROUBLE SHOOTING
If the "NORMAL INDICATION" is
1.1.1. Tat Myra. an a.. Olson may be on. by Ha. CM0 woo. 11.101.
Xi AN
I.. OM 1.... not
:my omen a.mmad Inalftelbm .pee souk.
not obtained in step 1, isolate the trouble by following the remaining steps
U the "NORMAL INDICATION is
I
RM. ION. UN. CMIS. C313.
Me.
Set the radio volume control to mar
as required for moth step.
1
Dr... .7 I. ILL M.ed or lea. .013. CM Op.
Deci tear alga a III.. II414, ...I num, rm. Op. ROI, 1.403.. a01. Sber. or
A
For the tests in this section, use en r -f signal generator, with modulated output. Connect the generator ground Ind to B-, test point B; connect the output Ind through condenser to the one points indicated in the chart.
TROUBLE SHOOTING
TINIT KIM
net, 041111. Open 1149. 111..Ar VOL
Loud. Wear Meal ma =donne
Hp. lap.
Section 4
Fm the tests in this section, use an audio -frequency slant generator. Connect the generator ground lend to B-, test point B; connect the output lead through
STEP
POEM= CAMS OF ASNONMAL INDICATION
unnt.
Mit pent Homed Is
11. part local. le =mbar mot.a may ca.. abnormal Inelerelen e 11. mole.
obtained in map I, proceed with the tests for Section 3. If not, isolate and coma the trouble in this section.
C
13
4
Lea. CI.C.
loss. To. Alenontal be. may W mar. by epee CHOWS CIMS. Ch NC. or MIL
Section 2
I 3
NORMAL INDICA11011
La.. dear Mmel cep .ee Sass TrmMU ellide DR seam. Dol. by De Memlee Cm Hp. IA.. elm denalm. me. rdcmal Den.. 717 Ded 1.1.1 71. I.. war. at. Maned or
A
1
Debt.. 311V4. Ops, C100, 11. Leaky C100A. OP. RIM.
yareen
TM POST
STEP
Usable *Ma DM meals. leen. by Ma lelbroln. wan.
SG mar 131 robe
MODELS 49.900-E AND 49.900-I TROUBLE SHOOTING
Section 3 For the tests in this season, use an r f
TROUBLE SHOOTING
Section I
IS
COVISMFA 1.10,7
SECT ION 2 - AUD 0 01/11.1, ScRacr
1ST AUDIO
ZROI
Km f
1.
rum
ft A/41,
.0/
101
AIM
00-
7 -AFC
.04
4110)
//1 /Ce
220/If
LSZOO
1
45r
47,000
RAR, 43
2200 RIGS
.106
21 MEG
UM 14,1110.
i0,002
cdN
0101
DOOR
ceon 34.0
Orel
Rum
M
220
CSYN
wii17
IF11,1 OF 0041
IF-455KC
MODELS 49-900-E AND 49-900.1 RecrIFIER 31,1
III
0/00
R101
220
VOLTAGES WEAL NEASURED BETWEEN DIE PCINTS INDICATED 000 II -3.151114 C 20,000-ENNSPER- VC.T DETER Wall AN I SPOT IN 117 V A C
COWMEN MIMES
LSI/ NS
Tit
e/cre I. OF
IIIIp
WARM
FIXED
MYER
11. ELECTROLYTIC
/00
110001 .001 .0114 1074
- Rf,l1,142 MIOD WAAL PAM 03C SIGNAL MTN
90
,A000
200
ALL 11.SIS10R ROBS IN C4114 MUSS OTICFNASE
00.007
MP
707
(4407
F.
49
HMCo.
2.'" SECTION
POWER SUPPLY
MOILCO RAMO, MOORS MAIN AMY 4,406-1. sienonun, SCOMMATIC 01404414, SIMMONS TOT POINTS
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHI LCO RADIO
MODEL 49-901
TROUBLE SHOOTING
TROUBLE SHOOTING
&silos 3
14. Detester. gad A -v -c Circuits
Section 1 Fewer Supply
For the tests in this section, use an r.f signal generator, with modulated output, set at 455 la. Connect the genconnect the output or ground lead to B-, test point pod through a .1.mf. condenser to the roc points indicated
For the tests in this section, use el -c voltmeter. Connect the negative lead to B-, um point B; connect the positive lead to the test points indicated in the chart. The voltage readings given were taken with a 20,000ohms-per.volt meter m line voltage of 117 volts, cc. Turn on the power, and sec the volume to minimum. If the 'NORMAL INDICATION' is obtained in step 1, proceed with the tests for Section 2 (audio circuits), if the trouble in this section. nor, isolate and on
".....W.
proceed with the tests for Section 4 ('4' and convener circuits) if not, isolate and correct the trouble in this 2.4011. To provide a complete i.f.amplifier check, test point A for this section is placed at the grid of the mixer in Section 4; therefore, the effectiveness of step 1 as a miner else& is dependent upon the condition of certain pans in the mum circuit. These parts are listed below under "POSSIBLE Figaro 3. MAN= View, Shewhig 3.14.ra 3 Tasf liMats CAUSE OF ABNORMAL INDICATION." ;
rou 2 AI oh:. seellon. lolne br I Defective: 3114.
No volt...
124 oohs
C
0
in the chart. Set the volume to maximum. I) the "NORMAL INDICATION- is obtained in step 1,
--"" Rims 1. 1441.41a View. Shaw* Sonfla. 1 Toss Mats 4.04142A 001124114 CAVIA OP 40.1.44 140421001 1.14.1.
1412vo rtl.
I
MODEL 49.901
e
a owl. 12..
STIP
MT mar
I
A
2
C
Loud, clear out
3
A
Same ma step 1.
HIji
input
Leaky: Cle1C.
Law "alum
Section 4 R -F and C.:m*0er Circuits For the tests in this section, with the exception of the oscillator test, use m r.f signal generator with modulated output. Connect the generator ground lead to B-, test point B: connect the output lead through a .1 -mfr con
Section 2 Audio Circuits
deviser to the tem points indicated in the chart.
For the tests in this section, um an audio -frequency signal
Set the volume to maxim, arid set the drum tuner and
generator. Connect the generator ground Ind m B-, ten
the signal.generstor frequency as indicated in the chart.
point 13; connect the output lead through .1 nit. condenser to the test points indicated in the dun. Set the volume to maximum.
If the "NORMAL INDICATION" is not obtained Step 1, isolate and correct the trouble in this section. If the trouble is not revealed by the tests for this section, check the alignmmt.
If the "NORMAL INDICATION" is obtained in step 1, proceed with the tests for Section 3 (i.f, detector, and circuits); if not, isolate and correct the trouble in this section
Rigare 4. Beitem Vlaw, Showing Searle. 4 Toot Pelais 4.1.
-I-- --A-MT 401214
114garti 2. &Mem Vlaw, Showing Saari. 2 Ted Foists
1
1)
4
A
A
Doiective: 14B6 Opta : 8202, Rofil, C.201.
Shoved: C200, C301D. Open: CO®, 11200 (rotate through rose)
Input.
teal. may cease abnormal inN lemon in this wetion.
SECTION 4 -Or
festive: 000. Shoned: C402, CAtU. 0404, C403, L400 to LAOS, WS:11F1.
Some es step 1.
Same m 000 I.
Shored: C407, W32(RI, C400A-F.
Some es Pep 1.
Open:
0401. C407.
R403, WS -211.1,
C400A-F. OSCILLATOR TEST: Connot the positive lead of e high -resistance voltmeter to B-, tot point B: ronnrat the prod end of the negoiee tad through e 100,000 -ohm hole ine roister to the oillator grid (pin 4 of 0481 tem point C. Use suitable one, rms., 0-10 volts. Propo operation of the oecilletor is indi eted by neotive voltage of epproximetrly the value given in the ellen ru h (mosure trith 20,000.olamoper.volt mete throughout the caning now.
Listening Tem: Diemen. may be soma by aborted er leaky -C201.
Ills prom looted In
tuner. lolete by steps 2 end 1. No refuge for any sum,. witin.-De-
-3, lo -4.3s.
Open: L400 to L403, C404, 0403, 0401,
Open: T200, Mat
Same as gap 3.
Some m wep I.
Trouble in circuits aworiered with mels position of the mettoweelenor drum
Below.
Defective, 56AS, 13200. Shoned: Citn. C101, 0203.
Loud, clear output with moderate
rem Loud, elear meeker out. quo. of each him, for cob sta. put with weak .ipml. pneretor input. station settinp tion *ening. In turn.
(see Nu.
moderete rignal.geneoter Input imai.-
PASSIM 144110.4,.4460.101.
NOON. 1.14.104
..r r ..
Ow. Tow
thefallowing fallowing tole. deo pokeroutput with Trouble within thIsteetion Isolate byshe
Loud. clew ...mot mth urea.
001.100 AMA
SIC ABM 14114.
A .i)--d= o=f727'15
C to B
2
PASSIM .1234 .
.01111 111144211441
C
2
this semi...
TROUBLE SHOOTING
TROUBLE SHOOTING
,mA.,, 0,
Shone& C302, 7301. Open: 7201,1130k 0301, R302. Mimlipmd: 2.301. Defective: tAll'. Shorted: 7300. Open: 7300 Misaligned: 2300.
Sorted: 01110. Olen: 10101.
Llama, Test, Abuoms.1 loon may be tamed by .pen CIOIA, (AMR. or CIOIC. This pen, located in en they metion, m r our abnormal Ind( :Pion in chi. :tertian.
g.r.
Defective: 14.47, .52 (diode section..
This part, located in another onion, 410, 24.4 abnormal indi soon
Lmlist CIIIIA, L10113. Showed: CMOs Opem 01111, T205*, RAH..
oohs..
gooks,
100 volts
A
914: .21 C101B. Open: 11100.
&TOW.
BI
4
re
"tae
III volts
I)
3
Trouble within Ala section. Isolate by du, following .1..
with moderate
Zeerlad'z'&S.;°°. Leaky: GIOIA, Open: CIOIA. Open : R100.
Low...ham
14351.1 .Awe Of 4.41004.1 111111L/41011
140644. 1.161414.41 with modem. eignelgeneeeoutput tor inpu t.
Laud, clear poker
SECTION 3- Ir, DETECTOR,AND AVC
AM) CONVERTER
SECTION
2 -AUDIO
Polo, Jo os.4....oanor.ot
gi
nay
10 SAO
Mass Lwile
1.00
we.
O O 0040
ens
3.,1:016
3.4.0
CASCO
rr.ope=
a
L
244
Mcs
111.44796 204 .044 0411.121911 2.046
et4r.1..
4401.44
na romps
0.1.4..61 4.4 Ai C004222100
41.416
Ire
41)61 CAA
2.. ROM .2 C..
01111 1011004.
1. 4604 40 IS. 110. II. .1742
1.40
.4121 AM
21.1 440 ate:COLS.
MODEL 49-901
2 Or
0
rococo mesas
T
422
nTsts
w-
.01=124 11401 6111. 5110.11
A. M.)4001 AM
-4- AY LOW 141111
O. 16101 Om
.3124 24146
0244.11 .440.
MO .14
640.461
IMICAAS 2.22 20101.06 L.24 11102
recAus 2124 morn .02014 1.04 ,44,A1V OF W. 944224414 SIM. AT Mon OF
PSIlee Redly Modol 49-101, SeetieweiRed Schomafk Diagram, Shemin Trot Paints
SECTION 1- POWER SUPPLY
91
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS PHILCO RADIO -PHONOGRAPH
MODEL 49.1401 Section I - Power Supply Make the tots for this section with a d -c voltmeter. Connect the negative leadB-, toes tt point B; connect the positive lead to the test points indkated in the chart The voltage readings given were taken with a 20,000-ohnn-per.volt meter, at a line voltage of 117 volts, s.c.
TROUBLE SHOOTING
MODEL 49.1401
Section 3 - I -F, Detector, and A -V -C Circuits
Set the volume cotrol to minimum, and the radio.
If the ''NORMAL INDICATION" is obtained in step 1, proceed with the tens for Section 2 (audio circuits); if not, isolate and correct the trouble in this section.
SOO
meshed.
If the "NORMAL INDICATION" is obtained in step 1, proceed with the tests for Section 4 (.f and
ARNO..
NORMAL
TEST
poorr
I110/ATION
1
A
110.
2
C
200.
No Taboo.
0100.
A
Ddisictieiii 10006.. Opons 010121. Look, CI020. CI01. Msorlddi CI01. Open.
Mall Raba.. Na voltam
110.
T0ST POINT
NORMAL INDICATION
I
A
Iood. aim smoker onlpin
ins* In 0.0 ..,tam
l
C
'''''''''''''''''' "...'
r.02030"ec7,:771:::=. Ltrifr6;;::lion,"ogi00:::01.:10.:
551500
Lewd. dime output Nib wool
Section 2 - Audio Circuits For the tests in this section, use an audio -frequency signal generator. Connect the generator ground lord to test point 13; connect the output lead through a .l -tut. condenser to the test points indicated in the chart.
I
I
Doldetimi ISMN Ma: C429, GOO., ,00..L.300A. L300.
Inoue
0302. Omni 1.300.A. .00.010021. 0.1300111. Slloolonadi maa.
1515 pan *add m onellur melted, may mum abnormal Indica 0 014 meson.
son ecru. ab1e0001 indleatko 0 00 soca
media? sacem.
Wolaio by ika liallanIne bald.
1.30155.53015. IMO. C301.5510115 Look, 002.0004. 000000004: 1301. A
3
Lack, 01011 Meat 0204. Omni 0101. RIM.
1.0.00402 Tod+ Masora bum may So aoudad by open or Only CIO. or CID.
This pert la.
POSSIBLE CAM OF ASNORNAL DIDICATION
Mil Nook ma* 0110,
mot. Boa them. MeV. non'.
Tutee: C10211. Opine 1101 and 0101.
Lom mho,
MON. Wee, Showlee Settle. 3 Test Feints
OF ABNORMAL INDICATION."
!T.
Trouble 0 this sada. bate by 114, tellowton MY. Detective: SOTSOT. Omni W100. 0100. 11100. CI01. SS*:
Lam voltage
3
POUR. CAOM OF ARMORS,. INDICATION
INDICATION
Flew. 3.
converter circuits); if no, isolate and correct the trouble in this section. To provide a complete i-f amplifier check, test point A for this section is placed at the grid of the converter in Sonon 4; therefore, the effectiveness of step 1 as a master check is dependent upon the condition of certain pans in the convener circuit. Then parts are listed below under "POSSIBLE CAUSE
Nedra I. 1104e00 Shim Show*, 14101100 1 Test Po.. STEP
TROUBLE SHOOTING
For the tens in this section, use an r.f signal genet. oar, with modulated output, set at 4S5 kc. Connect the generator ground lead to B-, test point B; connect the output lead through a 3.mf. condenser the test points indicated in the ch.. Set the radio volume control to maximum, and the radiophono switch to the radio position. Rotate the tuning control until the tuning condenser is fully
phone switch to then radio position.
Section 4 - R -F and Converter Circuits
TROUBLE SHOOTING
TROUBLE SHOOTING
For the tests in this sotion, with the exception of use an r -f signal generator with
Set the radio volume control to maximum, and the
the oscillator test,
radio-phono switch as indicated in the chart. If the "NORMAL INDICATION" is obtained in step 1, proceed with the tests for Section 3 (i-f, detector, and 1-0.0 circuits); if not, isolate and corrot the trouble in this section.
modulated output. Connect the generator ground lead
to B-, test point B; connect the output lead through a .1.mf. condenser to the test points indicated in the chart.
Set the radio volume control to maximum, and the radio-phono switch to the radio position. Set the tun. ing control and signal.generator frequency as indicated
r
in the than. If the "NORMAL INDICATION" is obtained
in
step 1, further tests should be unnecessary; if not, isolate
and correct the trouble in this section. If the trouble is not revealed by the tests for this sera n, check the alignment.
INS. 4. illethe elec. Shawls. Sectis 4 Tst Points
Pitons L Mesa. 04.., Timely Steles 0 Toot rel.; TINT POOM
RADIOMIONO .,,,,,,,...
NORMAL INDICATION
PDX.. CAUSE OF AZNOSMAL INDICATION
1101
A
Radio
Laud. dam pools mt.
Trouble I. 00 section. loalosi . 00 lollowIne :tab.
101
0
Mama
denta modem. pm orator Input.
C
Sadie
Clem stmt sir. smog
D
RoMo
4
0
A
No.
Lend. dem aelpul MO, madam. Inmil. load. dam ooksot MIS
0
Pima
106.
RADIO TONING
NORMAL INDICATION
POSSOLL CADRE OF ABNORMAL
A
1000 he
Tune 0 Medal.
Loud clam simakar
Trouble In Ma soclica. lookb by thd ferleelat
Mr m Map
Dadectiver
4104. alma C200.
0201. Look, C201.
Mow*, Lepol
C -D
104a. me dm
mid hobo.,
Opdui C201. 0101.
A
Rotate 0roupb meg..
nottenna
Tuna le Miimid.
Sma a as t.
55
5
irelis.
Or., RIM lonvIdt. 0000. WI. Merlee, WS.
SECTION 4
RE AND CONVERTER CIRCUIT
INC
In
we.
1.0ctledi 13.300. Redo. C4110C. GOOD. 0401. x4431.14000. 14000. Omni C401 1.40011L40011. 401. 8402.
Pond. LAMM. 04004. C4003. Oman LAM.
OSCILLATOR TUT: Cedinsci post.. Wad ed ntelermis00. eokiamen tha adirellakir cu.* Cl, el um and pmt D: roam. the prod eml ibis nem.* Wad Demob a 100,5055.511m mat5405 55 5,55 500115., gr. (P. 0.. ceche* seec ranee such et 0-10 eke. 7.00 Memnon et the mei*, et ...C. na an C. 0 kidiemed moan. whom draln Rio isnsed Mem b O. Mast Mdasured NM a 30.000Monsimemb dirambout tee 0001.0 rte..
O20. es aced. NIL iores on mom equals may h cause by shorted or beely 0200.
05555 LOW
INDICATION
weak
Dobedirei .200. 331001. Sliesteds 1100. C10.1. C20I. C202. Omni TIM 0204. 8200. Leak, 0103.
ow** Input
Wards. Tee 0000.0000000.000may 1. embed by leaky C101.
.4400
POINT
5555
Input. 2
TUT
aTEP
STEP
SECTION 3
SECTION 2
DETECTOR. AND AVC CIRCUITS
AUDIO CIRCUITS
raw
0.0
tat
fare
11.4112
402
10.4
13
MOI
=MO
1
JO* I F 455 KC RECORD PLAYER AOC
LW 5111110-'
ROOM MORN
,
MODEL M -7 Cettle. PIMP
00 MAR XV
asno-noto sera (.$) swim
Van
IN MX 9031001
MODEL 49-1401 e 7,0 unra
boob
t
kw"it
ell
CO4104. MO.
11
*Mr Alma cartaync ILLTelttOr WW1
92
.!t
SECT ION 1- POWER SUPPLY PM. LINO 41-1400. Sottlwelhre Sth11e llottom. Mewls, Test rolets
APPROX GAIN DATA vS I N
ID
-
7.4.
ix,
COLOR CODED
NI
a
a
IF
a
a
0/3
100K
RI
L
r3
41'
TI
.ax
2
3.31
INDEX TAB
I
I
I
I(--4
CS
.003
0.1
ICA
I +24V.
-
1000
RS
v
-
I. F.
1T4
V2.
100X
.05C I
C23 .05
+8.9V.
4-
62
.73MA. .09MA
PLATE .11 MA.
INDICATES
.
/it 1
1.5 MA.
R3
5
7
IRS
VI
R5
V2 1T4
7 1214
V4 3VA
T 30 MF.
+89 V.
_ CI9A
41.7 MG
R12
220K
}R11
CIS .002 R13
A+
R14
rzoo
IMEG.
II
Chassis No. RC -1059
MODEL 8BX5
YE
T3
75,
.
,
.....
10 M. A.
60 M.A.
Intermediate Frequency
Frequency Range
104,,,, NIGHER,
"13- DRAIN
'Yr
455 kc
540-1,600 Ice
7
C22 AC -DC 05 SUPPLY
BAT T. SOCKET (TOP OR FACE VIEW)
"A" DRAIN
7Y .1.
+85v.
'5" VOLTAGES ARE APPROX. 10,'. LOWER. (11723 RECT. NOT USED)
TUBE CURRENTS ARE APPROX. 20% LOWER. (11723 RFC ricIGR SWITCH 1S1"AcTUATED 8Y LINE PLUG. NOT usED) ON BATTERY OPERATION 'A' VOLTAGES ARE APPROx
VOLTowyST, AND SHOULD HOLD WITHIN ± 20% WITH 117 V. A.G. LINE SUPPLY.
VOLTAGES MEASURED TO RECEIVER GROUND (-13) WITH CHANALYST OR
1U5
V3
VERT iCAL.LO"TO CH ASSi5
/11C6NRAOsusNios
INDICATES
CONN'S. ozcii-Lqc9PE VERTICAL HITO THIS POINT
INSULATED FROM CHASSIS
COMMON WIRING
R 39
.26 MA. .014 MA
1.3 MA
-
ISMS&
.01
RIO
CI7
VL. CONOTR.
",
CM' .02
R7
\
+67V
OUTPUT
V4
PET.- AMC.- A.F7
2X
3V4
400
V3 1 U5
Sox
I MEG.
Attu.
IEE,
,
)11I,
70x
R8
IT62
c,
anti
SCREEN
ON BATTERY OPERATION
3v4 7.1coA MA 117133
105
IDS 174
gX
bail
T2
tfci
r -3- -
A55 KC
TUBE CURIAE NTS (A.c. OPER.)
K= 1000
-1014
MAX AVC VOLTAGE
Cm
4.
C7
4-7meG.
IR1.3°° 3
+1.3 V.
R 4.7M
ttc)
OSC. COIL
I
+09V
(REAR VIEW)
(2... IF ONLY)
7-97
ic)c)
4L2
4.1.
56
05C, COIL
C6
5O 4S1 IC
Ett, RCA VICTOR
0
5-
11
+07V.
V. woOlIc4-C4
1170441-4 2+A I E BOTTOM VIEW
970441-3
1 R5
VI
I8X
15T pE1:- 0.5C-
- 5.9 V. is40 KC
IF TRANS.
MEASURE 'TS
OUT FOR. GAIN
SHORTED
C3 .05
C2 1
2-17
CI
12-444
AVC LINE
LOOP
C NA NALYST
C2 82
Y1 -Y2.
r
.89
MEG.
4.7
R2
MEG.
4.7
R1
+
M
1
.05
CE.
2-10
GI
. 4 4.901
.45
4.3
.a4ID_
SwiTcH " S1' ACTUATED BY LINE. PLUG
±20% WITH RATED BATTERY SUPPLY.
VOLTOH mysT, AND SHOULD HOLD WITHIN
GROUND (-B) W1TH CHANALYST OR
;4:Fs.°IEI-w)
INDEX TAB
F
C36
L5 OSC.
6
.05
7.----- C16
Q\
(REAR VIEW)
05C. COIL
LAI 0
1-1\
023_
.0025
+359
POWER CORD
-a-
r,
Aj
2ND DET ARC L
TRANS.
2ND IF
+SR KC
0
BAIT CABLE
OUTPUT
LS - LI
C81 C 32
c80
cz9
,
1U5
V4
32x
400
163
BELT
17Z
5
7
v1 1T4
40
IM
R14
2 2 1031 4
z
CID
7
4.
,,
,C:.
BLU
,,
,
a
6 0 RED 7
cc
0
LINE BATT.
51
1500
RI8
Tc,,
2
BLUE
NF
ELECTROLYTIC
11. _IF _AI
Ugi
Ot 5 Mr00
LL-
POLARIZED LINE CORD TO 51 OR 117 V. SUPPLY cz7)- 1
X Jr'
3(P1N VIEW)
4 BATT:PLUG
cr-0 0o
5
I5K
R20
6
RVCT.
"A DRAIN - 50 MA. " B"DRAIN - 1 5 MA.
MF
50 T
sRI7
113V.
TI
117Z3
005T 4 90 V. RED
C32
73
+9V
L8 ADJUST 600 UNDER CHASSIS
1.25L 5 RF. COIL
Cl2 C9
OSC RF
r.,,364400zc
c.11
5
3V4 "A"
ME'
EXTERNAL LOOP SOCKET
BOLE (600 KC)
I
30
5
+87v.
APPROX. GAIN DATA USING CHANALYST
k
-)C28- :ig
62
PWR.
3V4
V5
46%
400q.
+1.5 v.
Zo
V5
T.
C29-
L4 ADJUSTED TRIEJJ
270
G26-
),
027
.002
L4. LS OSC. COIL UNDER GNAWS.
7 1
7 7 I
IRS 1U5
V2 1T4
27K
RIO
-7
> 0
65v
D
e+
V4 1
I
L'H-i4
R12 4.7 MEG.
82
. c,9
,
SP AF
V3
F
6.n-
62 kl8 L9
ft A +1.3V.
TRANS. 2ND. DET.-AVC
KC
.5)!
455
ci7g coo
celLAL,
D
1 r) ----',28E
Z
ft
SNOW/ IN POSITION FOR BATTERY OPERATION
3V4
INDICATES
CHASSIS GROUND
3.3 MEG.
R7
.
-0.3V.+90V.
CoNN's.
1800
iR6
5.6 MEG.
R5
0 -7
I 4_1. _A DUC 56
o
If
I. F.
1T4
V3
123 X
455 KC
VERTICAL'HI`70 THIS POINT VERTICAL +O" TO CHASSIS
INDEX TAB
0
ft
OSCILLOSCOPE
C
D
.1M
155 KG
135.1. F TRANS
3.A. COIL -
3
6z
+90 V.
INDICATES COMMON WIRING INSULATED FROM
= CHASSIS
L4 Z. 8 -98 -7-9,,
Cl2
56
C8 -
-I 2.0 V 4400 KC)
GOOKC...)
2700
-9.5
R4
C9 8-202
Poo K
®
od 1,10
4g _
+I.8V
CON V.
vz 1R5
't 60014(.55 KC
R19
_
CuRRE,
3
;
i
.k.91
)1-,..,,
2.2
C7
RF COIL
+90V. 2 LZ 0,
RECT. - 1MA. AC OPERATION
V5 7.
V2 .32 V31.3 1.4 V4 .085
1/1
*-1( C4 x.05
+2V.
in
16
0\1 07
A
+ 3.4 V.
R. F.
1T4
K .= 1000 VOLTAGES MEASURED TO RECEIVER
LOOP
EXTERNAL
Y1
MEASUREMENTS
USED IN GAIN
03 -4.,c3" 'f- 7.5
1
LOOP SOCKET
EXT.
BLK
0
" Y2
4-70
T4c1
Il^-
YI
15 X
MEASURED WITHROOKC F 1 xED DIAS
.BLUE., )1
FOR FIXED VAS
NTE RNAL LOOP
L1
(0
;31
:91
C4
g
ima
n
O A O
z O
7,*
0
n
m
rn
AI
0
Z M
O
M
Pt
L
z
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS MEASURED WITH 1.5V FIXED BIAS 3
1A7GT
1 H5GT
1 N5 GT AMPL.
2,40. Orr.
1
CONVERTER
Ifx
APPROX. GAIN
30.5GT
CHANALYST
DATA USING
400%
(500-3543157-4te-'1*---4-74-'5°5-1t
AC
OUTPUT
A.V.C.
Dor-MN VIE OF TUBE SOCKETS L'2 LI 155 411.
CN 0.02
66.1=
MNF.ke
2-1S UHF
330
UHF
UHF
C
EL
8 10R 'AEG.
1.5V FOR +" C 120 GAIN
R5
3.3 MEG.
H1EAS
o.4s,
6
1
CI 0.
SHORTING
j
J
55 1 MEG
I
RG 2.2 MEG.
USED ONLY
WITH SATTERy
S'ez
So
SOCKET
(TERM. VIEW)
R9 SToe VoL.C_014715
1 MEG.
1414E
PLUG ON CHASSIS (TERM. viEW)
C9
0
_L MME
OSCILLOSCOPE CONNSJ VERTICAL. Ve To THIS POINT VERTICAL 0 TO CHA 5515 C 12
E L4 =-
7-593
SW ON -VFL7.07TIT.O
HOLD WITHIN *20% WITH RATED SUPPLY.
DLK
* MEASURED WON CHANALYST OR vOLT0NMYS-
K 4 1000
P1.20.
MIAr.
51
VOLTAGES MEASURED WrTN RESPECT TO CHASSIS AND SHOULD
3
1
RED
a,
PLUG ( REAR VIEW
To BATTERY OR
INDS*
ELECTRIFIER
TAB
SOCKET
(TERM.
VIEW)
osc. COIL
ANT. COIL
SHOWN WITH GANG COHO. AT MAXIMUM CAPACITY.
(TOP VIEW)
(TOP VAEW)
LI - 1.2 ANT.
GOO KC
RCA
DRIVE CORD
Model 8F43 L 3 05C. 540 AC.
Ti -TOP& ROT
Chassis No. RC -1037B
T2-TOP6 SOT
455 KC.
455 KC.
6AQ
6S C7 SLK.
OUTPUT
AMP E PH. INV.
r
275 v.
C7 .005
C6
C 4 AM
.01
OR SPEAKER
TI
J2
CAPACITY IN MF. K. 1000
CONTROL PANEL
AMPLIFIER CHASSIS
CII
.02
cRysTAL MCKUP
PHONES
VOLTAGES SHOULD HOLD WITH WITHIN 2 20
RATED POWER SUPPLY. * MEASURED WITH CHANALYS# OR VOLTOHMYST.
EAcp
6X4 s2
RECT
MODEL 2S7ED
ESK
Transcription Record Player
63 V.
TO HEATERS IISV
60,v POWER SUPPLY
PILOT LAMP
95
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS r
MEASURED
SO. RIMED BIAS --11111TH
455°
CO Ai.V4,8it 1,,Nc
I
CON V.
400 3
5
2."-PDET-AVC-PH 111V.
F.
65K7
5A7
12X
ASvis1D k.
C
2
OUTPUT
6502
6V6GT
LI LOOP
a
T2
11
4
lioLooirt C.10
LC
.01
'12a9r=ilitF Lc
'1i5:
OSCILLOSCOPE CONN. VERTICAL "Hi 7o5 POINT
9.3 MA
6591
(2) (3)
65 K7
11.9
65.47
(4) (5) (6) (7)
6
0.4 0.4
SQS 6, 6 GT
RIB 070
VERTICAL *2)1' TO cnAssis
C20
.0055 2430
19.0 19.0
6V6GT 6Y5GT
P.M.
.5PM.*
- 56K
CURRENTS
(I)
1R-12 WHEN.
Snd
2-17
6 CV A OUTPUT 20MF 6V6GT
RIO 270K
LZ
CA7140 DE
T
mon
4
'
Co 1.5
R14 270K
A.F
08
3V FIXED BIAS FOR GAIN DATA
-
T .05
650_7 CIE 120 COIL
51 REAR
RESISTANCES
LESS THAN 111 NOT SHOWN
RANE 5W. VIEWEP
A
FRAMG FRONT * IS
SHOWN IN PH ONO .
SPNR.
10
LINK
(MIN. HIGHS) MAX
P1-10140.
5_20
zee°
7
/CLOCKWISE POSITION.
MOTOR
RECT.
6X5 GT
C21 C
c2116
*,20MF
PHONE).
53
JACK
RS 330K
Rt
* VOLTASES MEASURED WITH
100K
CHANALTST OR VOLTOHMYST
DIAL LAMPS
P
L
VOLTAGES SHOULD HOLD
vviTHIN 2207. WITH 117 V A G. SUPPLY
4p, AA s
77V1 RCAVICTOR MODEL 8V7,Alignment Procedure
Chassis No. RC -615
PHONO JACK
455 KC
TOP & BOTTOM
T2
Cathode -Ray Alignment is the preferable method. Connections for the oscilloscope are shown on the Schematic Diagram. Output Meter Alignment.-If this method is used, connect the meter
across
2. IFS
the
maximum.
455 KC TOP & BOTTO
voice coil,
and turn
the receiver volume control
Test Oscillator.-For all alignment operations, connect the low side of the test -oscillator to the receiver chassis, and keep the oscillator output as low as possible to avoid a -v -c action.
L2 050.
600 KC C2 (ANT.
2.
1400 KC
C4 (05C)
Connect high side
of test oscillator
to-
TUNING COND.
Tune test
oscillator
Turn radio
to-
dial to-
455 kc.
Quiet Point at 550 kc. end of dial
MOUNTING PLATE (INSULATED FROM 1
VOLUME CONTROL
SWITCH
2
7;
6SA7 grid in series with .01 mfd.
3
3i MAX. CAPAC1TT 600KC
4-2f'
I.
0-
4
Primary hood on loop in series
with 200 mmfd.
4.
-1C)
I
Adjust the
following for maximum peak output
Top and bottom
6SK7 grid m series with .01 mfd.
TUNING
& SWITCH
to
(2nd I -F Trans.) T-2
Top and bottom (1st I -F Trans.) T-1
1,400 kc.
1,400 kc.
600 kc.
600 kc.
C4 (osc.)
C2 (ant.) L2 (osc.) Rock gang
Repeat steps 3 and 4
Critical Lead Dress:
1. Dress speaker cable leads down next to
L
TONING
chassis.
2. Dress output plate capacitors next to chassis.
96
TURNS SOME INSTRUMENTS HAVE
2} TURNS
3. Dress plate lead of output tube away from grid of audio amplifier.
P0050
4. Dress all a -c leads away from volume control down next to chassis.
RADIO
5. Dress lead from top tap of volume control to range -tone switch along front apron of chassis.
.6. Dress R12 and R15 down near chassis base.
TONE
0
OFF -ON VOLUME
Controls
I
N 0104T00 PULLEY
trk,
539 1500
SECT- t REAR-
St.
Mi4
(TURNS
2.
-L
4-3
70te3
o
,'n
FRONT
41
osc.
SI
aREAR
.3
95.14
51
50
07
527
0451
G's7.4)
C,4° -L 79822.5
0222 L
1
HE.
ti_11 1c1
11/4
22N
Ti 09
150
055
/
OH
S3 TI
O
00
TUNING CONDENSER. SHAFT
DRUM ON
SWITCH SHOWN IN EATR-EME C/CLOCKWISE POSITION (1410142.) AS VIEWED FROMFRONT (nNon EHP).TCR.m. it 41 ARE NEAREST BASE
&A-
F.M.
SHOWN WITH TUNING CONDENSER AT NA% CAPACITY (CLOSED)
pwl,e
I -400
12
LOOP
1-r7
7-U
C:
LI 0
6J6
MIXER_ ED5C
VI
COUP, 20
a
4100
3 'At
1
4
.ges-
2251 R.5:,
005
CIA
SOME
r
V4
8.20
p
005
C24
3p:3
V3
SbN
IS
CI
ISK
RII
VS
r-
g#.i.
V6
CU i
1
0I
bAV6
s[ AF AMPL
g:
R.14.
V5
409
cv o.
RHOS
005
C2O
20
2702911
144,/
a
trans-
transformer down against chassis.
10. Dress lead from pin No. 5 of V2 to terminal "A" of 2nd I. F.
former should be dressed against the chassis. 8. Connect C40 directly between the gang condenser and pin No. I of VI. 9. Make all FM leads as short as possible.
100
RI7
3
270
COO
027 .045
IsK
V6
140,T
,OS
201.41.
Ile
Ho_
t
246,
C56_
MIT H
GAYER 9L.P...L.T.
vocr-A0r5 vc4suar..0 vorm
S
1300
RIR
gav
-
CAS C
CSZ
.oe6
VreT
145
VOLT...TO,
Ovl/ 6T GP
ttea
ssoo
.6 550
C51
C30
t5
1200
RR*
rirr.ow
PP,
sewn -
ii
57..4
47014
OIL
00%
0 at
+
-4 1-J 01
I
*
5. The lead from R82 to terminal No. 9 of Si should be dressed away from the output transformer. 6. Dress C25 and C26 against the chassis with the shortest lead length possible. 7. The position of LI and L2 is critical. LI should be midway between VI and the 1st I. F. transformer. The end of L2 should be approximately 3/16" from VI.
1. Dress resistor R15 near chassis base. 2. Dress all A. C. leads away from volume control. 3. The lead from "FM" terminal of antenna terminal board to LI tap should be run around the outside of the 1st I. F. transformer and away from V2. 4. The taps on Ll and L2 are critical. LI tap should be 4 turn from the ground end. L2 tap should be 2; turns from the gang condenser C8.
41.5
VI
V4 6ALS
RATIO PET
RIO
I
A
-I; 'I
WOW
O
RS
I CM 47
3(14
against chassis and on front apron side of the output transformer. 5. C43 should have short leads and the color code of the capacitor should g0 to the coil L4. The capacitor should be cemented .down with polystyrene cement at the same time L2 is cemented. G. The lead from the high side of the loop should be dressed away from tubes.
7. Lead from pin No. 2 of VI to terminal "A" of 1st I. F.
§
't4
V2
8
3. The ground lead of pin No. 2 of V2 and V3 should be down against chassis. Its length is critical. 4. The AVC lead from R26 to range switch should be dressed
0 -) DIAL
a
iI
!OW
015
515V
6Au
V3 DRIVER
CRITICAL LEAD DRESS 1. Keep leads of C7 short. 2. Dress R27 away from range switch and pin No. 5 of VI.
6x5 GT
V7
RECT.
am .005
AMPL.
V2
6946
IF
co
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS 8R74, 8R75 8R72, 8R76
VICTOR RCA8R71,
Chassis No. RC -1060
Alignment Procedure
Chassis No. RC -1060A
t Use alternate loading. Alternate loading involves the use of a 47,000 ohm resistor to load
CORRECT ALIGNMENT OF THE FM BAND REQUIRES THAT THE AM BAND BE ALIGNED FIRST
the AM plate winding while the AM grid winding of the SAME
TRANSFORMER is being peaked. Then the grid winding is loaded with the resistor while the plate winding is peaked. Only one winding is loaded at any one time. Remove the 47,000 ohm resistor after T3 and T2 have been aligned.
Alignment Indicators:
Oscillator frequency is above signal frequency on both AM. and FM.
An RCA VoltOhmyst or equivalent meter is necessary for measuring developed d -c voltage during FM alignment. Connections are specified in the alignment tabulation. An output meter is also necessary to indi-
FM Alignment
cate minimum audio output during FM Ratio Detector alignment.
RANGE SWITCH IN FM POSITION - VOLUME
Connect the output meter across the speaker voice coil. The RCA VoltOhmyst can also be used as an AM alignment indicator, either to measure audio output or to measure a -v -c voltage. When audio output is being measured the volume control should be turned to maximum.
CONTROL MAXIMUM
Connect high Steps side of sig.
Sig. gen.
output
gen. to-
Signal Generator: For all alignment operations connect the low side of the signal generator to the receiver chassis. The output should be adjusted to provide curate resonance indication at all times. If output measurement is used for AM alignment the output of the signal generator
1
The FM i-f alignment may be checked by means of an FM sweep generator and cathode ray oscilloscope. Connect the output from the sweep generator, which is set to 10.7 mc., to the mixer grid (6J6 Pin No. 5), low side to chassis. Disconnect the 2 mfd. capacitor C33 from the Ratio Detector circuit. Connect the high side of the oscilloscope to the junction of R25 and R26, low side to chassis. Adjust the sweep generator and oscine.,
Connect the d -c probe of a VoltOhmyst to the negative lead of the 2 mfd. capacitor C33 and the ,common lead to chassis. Turn gang condenser to max. capacity (fully
2
modulated 30% 400
bottom core (Approx.T4 .05 volt). for min. audio
10.7 mc.
3
AM Alignment RANGE SWITCH IN BC POSITION Connect high gen. Turn radio side oft sig. Adjust for output dial togen. peak output
4
AM windings.[ T3 bottom 455 kc.
2
core (sec.). T3 top core (pri.).
AM windings.t T2 top core (sec.). T2 bottom
4 5
"A" terminal of terminal board at rear of chassis in series with 220 mmf.
1400 .ke.
600 ice.
600 kc.
FM windings.11 T3 top
core (sec.). T3 bottom core (pri.).
FM windings.[[ T2 top core (sec.). T2 bottom
core (pri.).
1.2 osc. C.2 ant.
106 mc.
106 mc.
6
90 mc.
90 mc.
Set C2 at max. while adjustIng 1.2.
LI ant.
(Rock gang.)
Repeat Steps S and 6 until further adjustment does not improve calibration.
Two or more points may be found which lower the audio At the correct point the minimum audio output is approached output rapidly and is much lower than at any incorrect point.
C13 osc. C4 ant.
1400 kc.
FM ant. term. in series with a 300 ohm resistor. (Remove ant. lead from "FM" term.)
Adjust to provide 2 to 3 volts indication on VoltOhmyst during alignment.
pacity (fully meshed).
5
7
core (pri.).
3
C33.
cycles AM
.01 mfd.
output.'
the oscilloscope across the volume control R14. Capacitor C33 should be re -connected before checking the Ratio Detector characteristic.
C3 in series with .01 mfd.
voltage across
Max, ca-
The Ratio Detector characteristic may be viewed by connecting
Quiet point at low freq. end.
T4 top core for max. d -c
10.7 mc.
Pin I of 6AU6 in series with
scope to obtain the response curve.
1
Adjust for peak output
dial to-
meshed).
should be kept as low as possible to avoid a -v -c action.
Steps
Turn radio
tt Align T3 and T2 by means of alternate loading as explained under AM alignment. Use a 680 ohm resistor instead of a 47,000 ohm resistor and load the FM windings.
L4 osc. (Rock gang.)
LI and L2 are adjustable by increasing or decreasing the spacing
between turns.
Repeat Steps 3 and 4. PHONO JACK
10.7 MC
TOP RESONANCE
ANTENNA TERMINAL BOARD
TOP I0.7MC SEC. BOT. 455KC SEC.
SOT. CENTERING
TOP 455KC PRI.
BOT. 10.7 MC PRI. ST I.F. TRANS. TOP 107 MC SEC. BOT. 10.7MC PRI. RATIO DET.
RATIO
TOP 455KC SEC.
DRIVER
SOT. 455 KC PRI.
DET.
4 1400KC AM ANT LI F.M. ANT. COIL
TRANS.
L4 600 KC OSC.
M IXER
AND OSCILLATOR
L2 FM OSCILLATOR COIL
98
VOL. CONT. ON -OFF SW.
TUNING CONT.
RANGE
SWITCH %116C4,C2 4
CI3 1400KC AM OSC.
C 3 ACCESSIBLE FROM
UNDERSIDE OF CHASSIS.
DJ
0.
Cl
n
o co o 8
0 O.
Tw
to
7 DJ
a
00
,Ticnt0
IA LS
5-27 IC' ANT
C5
A
3-5S
IF e FEATiO DET
15
OKKA. CLOCKWISE POSITION.
SWiTCIPS VIEWED PROM FRONT AND SHOWN IN F.M.
LS
F.101.1
RAMA
52
LOAD
too
R2
V7 VS VS
V4
Es REAR
- C13
/IA 3 At 3 It 314, 914
Ve
390
220
C to
RIO
970
ME&
Re 3.9
VII
-3.5A
Le LS A
222v
115V. AC.
V9
V2
MINER
6 BA6
I
C61 .01
.01
RCAVICTOR
157
.05
cyb
T-
2.2 MEG.
R IS
125-342
236
ISO
00
R17
160K
1000
220
45
47.4_
I' n31
_B.
".: ai
T4-455 KC.
SIC. LF/
-
S1
CONBNIE
Se
R25
2200
.005
ON -OFF
3C
.05
22K
12113
-7 n'
C41
TS- 10.7
R 2O
1905
,Ty_01
cstts
2,6v.
INK,NO AMPL.
VS
6AU6 2.0. EF
pablf
Imre
ass moo 22mm.
-.-2.
COG
.00S
s I
CI
.01
.002
D-1(
C54
--1
.0 .003
M.F. TONE
270K
L.F. TONE CONTROL
R2G 2 MEG,
RK-121C RF-IF Chassis RS -123D Power Supply 8 AF Chassis
Model 8V1 51
C
AUDIO
A
(FM)
IDOO
1(
22K
RAE
-1
4.
IN OumS
AC
IN FM. POSITION.
F -M
e- SAND
- 74
VI -V
( FOR OTHER 50I701 FoSITSMS SEE VOLTAGE CHART) TUBES CONTROLLED BY A.V.C. NI -V2 -VA .A" BAND
VOLTAGES SOBS MEASURED MITI VOLTOIWNST AND SWITCHES
E AUX. OPERATION A DIODE (No.s` FUNCTIONS TO PREVENT A.V.C. PUS FROM BECOMING. POSITIVE.
PLATE OF OSC. OPEN FOR PHONO
SoPPLY.
WITHIN ±205. WITH 115 V
ALL CAPACITORS LESS THAN 1 IY MF S ABOVE I IS MIJIF UNLESS OTHERWISE NOTED. VOLTAGES SHOULD 110L0
ALL RESISTANCES
K 1000
MONITOR UNIT
CONTROL
RS3
VII
M.N. REACT.
G DAG
mg
Cle
2
I--H---,
GALS
RATIO DST.
21:1, N-
SS
OW,
TUNE
D
C74
EceNTIR
AM011..
027 IMPS
MAGIC
3
L
1272
IF
I
T7- 10.7 MC.
EIZACT
o -f---1
2.4
12.7__7_
I
713-23.7.1C.
SON
197 V.
DRIVER
GAUG
Continued on the next page.
470K
Pia
L_ C50j CAA
'11000
C 5I
E
_F
RK
.005
- CA S
CAA
L
-
73- 10.7 INC.
c4z
L-2 c.
e
6BA7
AM Fm CONVERTER
4:aV/ 6 ?zci 1. 71.7T.' -, _L
_a
T-2
ANT COIL
END Of SWITCH WAFER NEAREST
FOR DI -ROLE
CONNECTION
4-
SWITCH SECTION VIEWED FROM FRONT
3
ANTENNA
TO EXTERNAL
0
LOOP ANTENNA
r-1
0)
AM 455 KC - FM 10.7 MC
Mai Intermediate Frequency -
1,000
RI
400
CI 00:
(ON
51
C 3 "A ?4
PI
T2
75
35Z5GT nal.-111
PILOT UGHT
0
T4004
6-N VOLT
,00 v.
MPAWNNA
mum,
C2
T1
AC -DC INPUT 105.125 VOLTS
ANTENNA
UMNAL
kf.AW
12SK7
R15 110 AC
2 7
351.6U
fp,
C18 -A to
7
12SK7 2
R220.0100
2 7
12507
C1 1
125K7
R7
T8
ZiO v
C19
6-
CONTROL
VOLUME
R8 Imco
47,00,0
12507
R0
Ro2mr o,
C12
1AUM
2N0DU.A.V.C..
12SQ7
SERIES A
MODEL 455 kc 30 watts
530 to 1600 kc
Western Auto Supply Co. Truetone Radio
RI9
TUBE FILAMENT WIRING
1,04
C18 C
160.11
R9
12SK7
Tuning range Intermediate frequency Power consumption
IW
1,04
C18 -B
CONVERTER
12SA7
3
2
1
POWER
16/74DIAL POINTER
OUTPUT
TUNING SHAFT
POSITION ALONG DIAL START
AFTER STRINGING, TUNE TO STATION OF KNOWN FREQUENCY. THEN GLUE POINTER TO STRING AT PROPER
ANY POSITION WHEN STRINGING.
PULLEY ON GANG MAY BE IN
60 INCHES OF STRING REQUIRED.
220,0001
470000
R12
400 v.
C14
35L6GT
PM
470,000
R14
T7
FINISH
;try.
CI6
300
.1.
1100 W."
\
200 MMF.
0 00 I
L-1
BL AC
HITE
1470 K.,
611,
BROWN
0.5
F.
10 K,
MF
004
L-3
\
Speaker
51/4" Dynamic
455 KC
540 to 1600 KC
4 Microvolts at 1 Watt Output
55 KC Broad at 1000 Times Signal
2.2 Watts Undistorted 4.0 Watts Maximum
Sensitivity
Intermediate Frequency
AMP
2200 MMF.
:
RED
Iti
FUSE
RECT.
Selectivity
Tuning Frequency Range
\
6X4
V
\
GREEN
6.6 Amperes at 6.6 Volts
Power Output (6.6 Volts)
Power Consumption
I
1
I
IT L,L1 I
I
BROWN
RED
R Of IJr309
PONEP TRANS.
10K
R4 220 K,
1
SPECIFICATIONS
'1'0
ON -OFF SWITCH
vte CHORE
0,4 Or LIGHT CHOKE
L-2 0, a.)(19
TO FIL
VIBRATOR SOCKET WIRING SIDE
MMF
51 PILOT LIGHT
BLUE
R.F
6BA6 6BE6
22 Kn
BLUE
TO AMMETER
10 Mr.
B200,
11E
0.4
EOS
6 AV6 ,,,s1
:;:firg WITH ALL READINGS TAKEN1ETHEEN SOCKET TERMINALS AGO CHASSIS.
:ilgoLISOVolngtr ARE
S
VOLUME CONTR01.-MAKIANAM
ANTENNA SNORTED TO CROY.
DOS
.0
MO
1K
-10
1I
RED
r
6BA6
NO
00
ow° 0,0 00 Of
if
R
MF
.r 05
6BA6
SENO Der
AR p 6
BATTERY vOtrAGE t4 611010 LOAD
F
68,
1
6BA6
I.05MF.
GREEN
VOLTAGES MEASURED UNDER FOLLOWING CONDITIONS
6AR5 OUTPUT
50V
C-22 B
20 MF. JSO v
470,
C-22 A
1800,
47 MMF.
C-7
1
MAU.
47
1 ST DE T. 10SC
2
le
-122
05 Mr.
50 MMF
C-140
'Cgfalgat 0.4 MEG.
1
47 K, I
MAR.
6BE6
ADJ./
SOMME.
OEM
rat°
10 MEG
470 KA
I.F.
PRi. ADJ.
.01 MMF
FRAN.
WW
RECT.
6X4
VIBRATOR
at
,,,-.41-SEC. ADJ.
.-11177f 20 MF 25,
560
11.005 MF
ST A.F.
6AV 6 2 ND DET
F
OUT PUT
6AR5
1 CrOCNNT'R 0 .
200C
SW REAM
i'CS4AS
S REAP
SW3
PH0110.
THIRD POSITION CLOG.= IS
ALL VOLUMES IMAIMMED FROM CHASSIS (MO USING 20 PERCENT. VOLTAGES WOULD OE AS SHOWN USED IN DIMLY MODELS. USED ONLY WITH V- EMIR POWER ..... KORNER.
AM. BAND.
Frequency Modulation
Standard Broadcast
Amplitude Modulation Frequency Modulation
INTERMEDIATE FREQUENCIES:
w
na
OSC CONVERTER
REM
SECOND POSITION CLOCKWISE IS
FREQUENCY RANGES:
S. T.
5.
C50
TOK
RS NOTE 111
NIT 470
MMF f1LK, K)7418
1
POINTER
TENSION SPRING-.
10.7 mc.
455 kc.
540 to 1600 kc. 88 to 108 mc.
I
II
ATP
LT IF.
SWI SWITCH ON
R25 I.
CONTROL
RI 1M ITNE
BOGIE
RANS.
0
0 0 0
0
POWER COW
2 TURNS -oo
R38 100K
34
FEW EARLY TRANSFORMER
7:30-
SOCKET
PHONO
MOD Ls (CHASSIS 0-11111 HAD IS/ Aso RIP IF AD./NSTNINTS AS SNOWS NY DOTTED LIRE.
sca
SPEAKER
2 LIFO
cl
SPEAKER PLUG IS SOCKET
Fm OCT
6H6/8T
TO ALL HEATERS EXCEPT 5044 RECT.
5.tq
.m
XIS II
PUT
6Y6G WT
DISCRIMINATOR
"75-=
NOTE
SVA
REAR VIEW OF MAIN CHASSIS
.c__71
POWER
SET.
6AT6
INVERTER PHASE
. DET AvC
NO PILOT LAMPS
SOCKET
ROTOR
VOLUME CONTROL
0%
NOTE 5-..CTS
Ix EC-
POWER CORD
505 . R. 2.0.
CONTRE CONTROL
Hz 2N
RYIS-
ELECTROLYTIC
r
Isa
66A6
20,000 OHMS/ VOLT METER LINE vOLTAME HT 'AMC.
PAD
INPUT
M1K 0
RIG
FRONT
swa
0.1
9 1LT IF TRANS.
IN EARLY MODELS TWO 02 IWO CAPCrTOR3 IN PARALLEL WERE SUBSTITUTED FOR (RLSONANT TYPE) CTN. SELECTCM SWITCH MOWN IN EXTREME COUNTER CLOCKWISE POSITION OR Flo. ONII
VOICE COIL DISCONNECTIO
.
3
SPE.ER PLUS REMOVED
_L
YW
CHI 27C0
2.
L
I
NOTES
11
7F8
RF AMP.
0.
CD
Z C.1)
r;"
CM
> )=111
x:t
CD
rn
C)
0
61
Z
0
a'
III
PI
C)
cl Dm tq
Dm
L6
3.
4
3
I.
1
11
R1,6 2.2M
021 .05
czt_E
-4
C7
A-BATT. 9V.
B-BATT. 90V.
/"
S
IR
R
5 CABLE
AB-BATT. PLUG
VOICE
METER.
CS
C
TNIN
ANT
INTERMEDIATE FREQUENCY
20,000 OHMS PER VOLT
NT TRIM_
A
SIDE VIEW
simmi.EN
MCFNIO41
USING
455 kc
RI7
RI9
IM
I
135
1-1
I
900
SWI
r
IU4'
.2_4 1
IR5
100 RFD
C2°0c-V
R2
c44.1..../..,
C13 )
S
_
!WI
C23
R13,
R18
L3
-.Q.L 2
GI2
.0s
C26
ISO
6".
1
I
C29
7
TERM. BOARD
(71.
1
-12200"
SW2
W COS 05
590"
R
IRS
RECT.
.1
IPA
90
CIS 300MFAF
CONTROL
ti5V.
SL
TONE
c26 .1
R3
rigrIV ,._.
RID
Cie
R
v.
3V4 OUTPUT
(-'\AA'-.1
C19 005
111
300 NMF
if. AMP.
0120"T
R7
RF AMP.
104
C2 50 MFD
110 V
C 24 AS
470K
R12
RIB 3.3M
R I7
-TENSION SPRING
C3 +-
RS
390"
- 3V4
50 MFD
CI
1K
NOTE S---"" A
R10
4.7 II
I TV
R16 220K
R21
28V
C le
SRN.
IS5 AVC. I §1 AF.
.005
-)
CII 100MMF
111072611
RI
I4-13AAR,12
TERM.
C27
2i TURNS
SWI FRONT
REAR
GIS
Lio
00 m MT
R13 47K
LII
Ji
034
21.12 IF. TRANS. C33
R9 470".
_
L
1
BLUE
ORANGE
90V
POINTER
R21
R9
G29
CID
616
C3
RED
YELLOW
3V4
SIDE OF THE DUAL FILTER CAPACITOR LINE VOLTAGE 117 VAC. SIGNAL VOLTAGE ZERO. READINGS SHOULD APPROXIMATE THE VALUES SHOWN t 20 PERCENT. IN LATER PRODUCTION, THE POSITIONS OF CI & CE IN THE CIRCUIT WERE REVERSED.
ALL VOLTAGES MEASURED FROM THE NEGATIVE
4.7 Al
R20
C20 .0i
R2
IU4 IF AMP
VOLUME CONTROL
BLACK
CDT
T
V\A.,
33M
R le
-
6600"
L3
70V
C 23 .05
_
C4
CII LT
Cis IMF
100
C3.21
Deo L -L7La j
0
90V BLUE in IF TRANS r C31
A/L----.'
100
CB
C9 CIO
A -B BATTERY PACK
//
1-4111111111111111111111
COIL DISCONNECTED
MMF
240
030
RII 470K
_r?
90v
IR5 OSC miXER
SWITCH SWI SHOWN IN EXTREME COUNTER CLOCKWISE OR BATTERY POSITION. SECOND POSITION CLOCKWISE IS OFF. THIRD POSITION CLOCKWISE IS A. C. LINE. SWITCH ROTATES 60. BETWEEN POSITIONS. SWITCH 5W2 CLOSES ONLY WHEN SWITCH SWI IS IN THIRD OR A.G. LINE POSITION.
NOTES:
CS
X.
C6
LOOP
IU4
RE. AMP
T1
=
%0 z
CM
ET
f -t -
(i)
(/Buy
(12
0
P.,
0
tv
z z
.43
P-3
Vs
0
40
111
0
111
ryi
SPEAKER
NOTE 3
+' I -
*
x.
POWER CORD
A.C.
OUTPUT TRANS.
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS We3lingh.OU3e efeCtriC
CD
ID
CI,2,3114
<1:3::
.B BATT.
2
POINTER
'...."- 3 TURNS
if
POWER CORD
TO LI
Signal Generator Frequency
Radio Dial
Stator of R -F tuning capacitor (CS) through a 200 mmf capacitor
455 kc
455 kc
Pri. and Sec. of 2nd I -F trans.
Stator of R -F tuning capacitor (CS) through a 200 mmf capacitor
455 kc
455 kc
Pri. and Sec. of 1st I -F trans.
Connect Signal Generator to -
1
-TENSION SPRING
........!__
4-- SW2
CONNECTOR
Step
C8 -0SC. TRIM.
__,--""
0.
0 RETAINER
Il F
TRANS
TRANS
TO .A. BATT.
C7
Models H-185, H-195
SO
OP
______r
C6 -ANT. TRIM. .
a
2ND I F
C5
ALIGNMENT Adjust for Maximum Output
3
Recheck steps 1 and 2
4
Radiated Signal
1615 kc
1615 kc
Oscillator Trimmer (C8)
5
Radiated Signal
1400 kc
1400 kc
R -F Trimmer (C6)
174
IRS
DTRANS.5
an
2
L5 L6
.2
* C5
C6
el
VI ,,
.),
3"
--I
11!C 22_
2
>
I
W
1
,,,
-x
*
,r)
e
--- C'ullg
1
.
2
R__.
Ve :I
_
.----
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I
R13
I
1
L
3.5" 60V
_ C2I 220
R12
R6
MMF
105I
4-'
-OW.
-
Am
c5
.002
SEE NOTE
.
I
C.191 0
R
4--)1- .002
R11
100K
/
==
CM ..7.!,..-
4.,
\ C8
14
11
3.3M
3.3m
SEE NOTE
R5 4708
7
I
--=
-VV\.,-
OUTPUT TRANS.
4
.005
4
P.
i .GRN
TI
1156
5
C 17
I3V
3
- . 2j - -C25
3 C24
C23
T=
L7 Le
1-4
31
_IL 1GRN.
'n1r 4i -g
.114
1
m
55V.
)1--
2
2 !II a I.F. TRANS.
F
1
TR
,.
LI
1ST
OUTPUT
25V.
60V.
60V.
3S4
U DET71-4AUDIO
I. F. AMP.
CONVERTER
I.5M
M RI VOLUME CONTROL
R6
8200-1,
L2 L3
CI
.05
I-
CIO .05
AAA,
C12
R2
.05
2.2M
-
RIO
1130"
RECT. P.
Iii.
220-
- C2
60 MFD +
- +40 MFD
R9
900" 900"
C1
SELENIUM
-
C 20
CI3
MMF
.05
RI5
R14 1K
IA
RIB
R17
3300^
67.5V.
POWER CORD
ISw
c14
- 100 - 0.1 + MFD
7
5
I3S
'1.-----AW D
)1:
- C4
II5V BATT.
R3 220K
IT
C3
RI6
30
IK
IU5
MFD
IR5
R7
220
C9 .05
_ SW2 S.P.D.T
I
SWITCH
D.P.S.T.
SWITCH
,
T or 1
BATT.
'A 7.5V..
-14M+ NOTE: I
.
2. 3. 4.
VOICE COIL DISCONNECTED. SWITCH NO. 2 SHOWN IN AC /DC
POSITION.
ALL VOLTAGES MEASURED FROM CIRCUIT
SHOWN ± 20 PER CENT.
SOME MODELS MAY HAVE
CAPACITOR
AS (GNU) USING A 20.000 OHMS /VOLT METER -LINE VOLTAGE AT 117 v.A.C. VOLTAGES SHOULD BE
TRIMMERS.
CHASSIS NO. V-2131 AND V- 2131-1
1
51
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS
Westinghouse RADIO
MODEL H., 18 8
TELEVISION
.
47 DIAL LAMP
/
I_
05C. "....
4---- - TENSION
C 6 -m
TRIM.
-
128E6
SP/IINS
/
_.....0,
c5
TRIM. C4
ANT.
---T
(:(2i111401"
I
3, TURNS
E
IF''
.--:"
1N9
TRANS.
0
F
TRANS.
6
0
128A6
CD OD
S
ALIGNMENT
Connect an output meter across the speaker voice coil.
While making the following adjustments, keep the volume control set for maximum output and the signal generator attenuated to avoid AVC action. Signal Generator Frequency
Connect Signal Step
Generator to --.-
Stator of antenna tuning capacitor (C3) through a 0.1 mfd capacitor
1.
455 kc
Radio Dial Setting
Adjust
minimum capacity
Trimmers in 1st and 2nd I -F trans. for max. output
NOTE: If the I -F transformers are badly mis-aligned, it may be impossible to obtain sufficient output using the above system. In this event, it will be necessary to align each transformer separately. Start with the last I -F transformer and work forward, connecting the signal generator to the control grid of the tube preceding the transformer under alignment. 2.
Recheck Step 1 adjustments.
3.
Radiated signal (no actual connection) Radiated signal (no actual connection)
4.
12BE6 ANT.
1615 kc
minimum capacity
Osc. trimmer (C6) for max. output
1400 kc
tune to signal
Ant. trimmer (C4) for max.
I28A6
CONVERTER
5085
12AT6
rk---If
DET
eI
ill AUDIO
OUTPUT
OP
OV
SO V.
output (rock -in adjustment)
IOU
7
CS
r
0
OND
,
a
7
2
.
2.aff
L__A
TRANS
TRANS.
L4 1.5
01
E'
:
'
'1Y CM
L
g
I
Kim,
--
C4
7
v
I
<
,
5
ROOK
;4-
C
1
L.
W i
100
5
OUTPUT TRANS
r
CI{
131:74111
'
j
RE
C15 47
1200,-
MMF
M,
-6
R6
R6 47K
Re
RIO
<
-SPEAKER
A
4
0
LOOP
S^
06
01
60101106
M
cm 47
SEE NOTE
V^
'4;OK
F
Woof
CIO
._
.05
221(
1
RI
500K
VOLUME CONTROL
CS C6
4 C12
24 '-' MerE
,
x'
CI 5 0
002
- mFD
R7
OM
,
v
,
,
ca 30
No 47 DIAL LAMP GI
5
SWI
DP.ST.
AC POWER CORD
1
5
MED
35W4
"
7
12011
3
I
I
!EATS
CII .05
0,
125E6
IllA6
5015
NOTE i
RII
2201,3 4
.05
,-
31
VOICE
COIL
OISCONNECTED
MANUAL OF 1949 MOST -OFTEN -NEEDED RADIO DIAGRAMS Weotinyhoude electric Corporation 68A6 44 CSI
30 NO
0
-
10 MOD EE
DET FM
LIMITER
1
C39
6A L5
6AU6
11!1:1A
YF
OSCCONY
306
lL F *HI
t
I
1.5
4
CON
- MED
I II
NO.,
IF
132 TRANSIF
*V'
TRANS
RI4 DISCRIMINATOR TRANS 01 5 tiOR
3 RR
TRANS
LEI L13 LE41
C411
10.75C
#1,
OI
EL
RCO
n1 '
C311
iF 2N55NS
4i517C
3
I Disntrrom
100 i
1111F E
C55
LLl_
01
657
I
C49 005
C50 005
033 470
C34 111:1-7_,,
rrF
NOTE
t 5.
VOICE COIL DiSCONNIECTED
SELECTOR SWITCH SW! . SW5 SNOWN Iw SECOND POSITION CLOCKWISE IS FM ALL VOLTAGES MEASURED
F110111
CHASSIS
COUNTER CLOCKWISE 111110.)
09154 20.000
POSITION
OR
111
11140
ONM /VOLT METER -LINE vOLTAGE 117 v A C VOLTAGES !MOULD SE AS SNOWS
tO PER CENT
in
ANTI
O
MMF.
50L6GT 12BA6
93 V
I 2BE6
12AT6
S MEG.
4.7
7
'000
470 K
C15 20I-
DET.-AMR
RD
.0 SWAT T OUTPUT
12 AT6 44V.
AT
4 2%
400Ft/
R II
leo
9_.S161
SP -I
USE ONLY ZENITH NON -INDUCTIVE ELECTROLYTIC CONDENSERS FOR REPLACEMENT.
1109.
PWR:-AMP
50 L6GT
.05 WATT OUTPUT
7X AT
400,1/
CO
4
0 0 000
PL -
__
MOS
B-
ALL RESISTORS t 20% TOLERANCE VNLES5 OTHERWISE SPECIFIED.
ALL VOLTAGES ARE D.C. UNLESS OTHERWISE SPECIFIED.
3
Wave Magnet
One Turn Loop Coupled Loosely to
Converter Grid
.5 Mid.
.F. FREQUENCY 455 KC.
ESSARY TO ADD PARTS SHOWN IN DOTTED LINES.
LYTIC IS USED, IT WILL BE NEC-
IF ANY OTHER TYPE OF ELECTRO-
C-2
1600 Kc. 1400 Kc.
1600 Kc. 1400 Kc.
Alignment
& Secondary Slugs C-3
Align Antenna Stage
Set Oscillator to Dial Scale.
For I. F. Adjust Primary
600 Kc. 455 Kc.
PURPOSE
535 -16 20 K .C.
TUNING RANGE
I
MED.
TRIMMERS
ALIGNMENT PROCEDURE
DENOTES COMMON RETURN
22
ALL VOLTAGES MEASURED FROM COMMON RETURN TO POINTS INDICATED WITH AN A.C. D.C. OR VACUUM TUBE VOLTMETER.
MOD.
SET INPUT SIG. DUMMY CONNECT OPERATION OSCILLATOR TO ANTENNA FREQUENCY DIAL AT
CHASSIS
DENOTES
ON MULTIPLE SECTION CAPACITORS LEADVLINE UPACCORDING TO THE PART NUMBER AS SHOWN,
SWITCH ON VOL .CON T ROL
tg 0
1-4
1--*
CO
cn
(1)
1-4
F-.1 0
Imo" x
CO C71
It el
I-4 CO
Ca
0 P'
a)
PL. P
O
0 1-1 HctO 0
crl
ti
cower
;0
0.
C)
6
F
co
TI
5
I.F.
12BA6
13 X FROM
455KC T040050
1-40
93V,
Sox
FROM
600KC TO 455KC
.0;r
10K " = 100
RI
5
CONVERTER
I 2B E6
O
Coy
30 WATT,
WH- OR
AT 600KC
3.5%
1.1.10.
es°
.
21.131.F.SUJG
-2ND I.F. TRANS.,
R . F.
I2BA6
00 we
RVOI-1JME CONTROL
LON-OFF SWITCH
ANT
128E6
30 WATTS
IT
1ST I.F. TRANS
1ST i.F.SLUG
I
R9
SWITCH ON VOLUME CONTROL
CONVERTER
OH.
5
4
3
2
1
OPERATION
Wave Magnet
Single Tarn Loosely Coupled to
Convertor Grid
1
T.05
MFD.
401-'''
C IA
RI 1000
2 2W.
RI4 C 15
DUMMY
1400 Kc.
TRDNAERS,
1400 Kc.
1400 Kc.
1600 Kc.
Antenna Alignment
Detector Alignment
min
D2111
151:
0
0
Doi
L'E'ZIS"L7E"u RSACU 'O'R'DI'N^GP^CTOTrE to PART HuDAISER AS SNOW.,
Set Oscillator to Dial Scale.
Zenith Radio
C-2
C-3
C-4
I
DENO TETCHASSI
1-3
Fl
0
(J7
0
iHr My
DENOTES COMMON COMMON RETURN
OTHERWISE SPECIFIED
ALL VOLTAGES ARE D. UNLE SS
RETURN TO POINTS iNDIEATED WITH MY A.C.,O.E. ON vACIANA TUNE VOLTMETER.
o
COOS E
STAMPED ;N RED IDENTIFICATION
LL VOLTAGES MEASURED FROM COMMON
PURPOSE
oo
©
3
r
STAMPED IN WHITE IDENTIFICATION CODE ET
535-162.00C.
TUNING RANGE
I.F. FREQUENCY 45511C.
600 Kr. Adjust Primary For I.F. & Secondary Slugs Alignment
SET DIAL AT
CHASSIS 6E05
--
1400 Kc.
1600 /Cc.
---
4S5 Kc.
INPUT SIG. FREQUENCY
.5 Mid.
ANTENNA
MVO.
-180
ALIGNMENT PROCEDURE
CONNECT OSCILLATOR TO
©0 00 00 O0 0I 2AT6 0 35L6GT/G 126E6 120A I. 129`6
ntalE NECESSARY TO ADO PARTS SHOW. IN °OTT.
.05 E LEE TROLY TIC 35W 4 IgLgEN.L:a: FOR R[PUCCM NT. RECT. FAHT OTHER TYPE OFELECT/10LYTIC 151.1SED, IT
IIV
EG.
47
PWR. AMP.
1.0 MEG.
35L6GT/G
DET. AMP.
R
AT
000,
.0>WATT OUTPUT
I 2AT6
T/
.05WATT OUTPUT
I,F.
410N
..559c ro Aoom
12BA6
MODELS 6D815
-TUNING
000.0 TO A95IT0
UI
05
15 MEG
R
6AQ8
17..
35W4
c II
4)c
52
FROM
70V
6C4
61046
R5 270 M
C-
RETURN
Co-)
100 A FROM
VOL. CONTROL
"ON -OFF* SW.
6AQ6
0 36x
k2W
AT
R8
.0,
CID
C
rYEL
RI4
1-N
R15
5L
REQUIRED.
W.W.
TUNING
6C4
40 MFD
C22
E REGISTER
1000 KC.
C4 05C. TRIM.
1400 KC.
C2 ANT. TWM.
140 MFD
C23
ALL VOLTAGES MEASURED FROM COMMON RETURN TO POINTS INDICATED WITH AN AC., D.C. OR VACUUM TUBE VOLTMETER AS
RECORD REJECT SW.
I2SK7GT
C2I 40 MFD
RI3
150 NEW 510%
4700
0.1 P-WH-GR
100154
R 10
WH-15LK
IRA".
PWR. AMP.
50B5
k2W
7X AT
---11%,Ar-11NA,Wv\r". G15010 22A- 100A.
0
12SA7CT
RADIO-PHONO SW.
5085
!ION
470M 620A
R7
VOL. CONTROL
2.51NEG.
DET.-I ST AUDIO
SWITCH SHOWN IN PHONO POSITION
4 0V.
455KC TO 400.,
HASSIS
DENOTES COMMON
DENOTES
-
0 PRE-AMP
IC25 `50
27 \
MEG.
22
04
001
500 MIX
I.F.
I2SK7GT
15,1a.,2Ns.
1117 V. AC. 55 WATTS
LK
C12
.02 24
25
TCMAW
TI
I ST I. F TRANS. 455 KC
NOV.
60013C TO 455 KC
616V
VIVO I.F. TRANS.
455 KC
SWITCH ON VOL. CONTROL
OF PlIONO SOCKET
TERMINAL END VIE
2. 2 REJECT SWITCH
03C. COIL
100 MVF
CI
BL
CONVERTER
I2SA7GT
0
0050o
IF ANY OTHER TYPE OF ELECTROLYtC IS USED IT WILL BE NECESSARY TO AD PARTS SHOWN IN DOTTED LINES.
REPLACEMENT.
USE ONLY ZENITH NON -INDUCTIVE ELECTROLYTIC CONDENSER FOR
NOTE:
I.F. FREQUENCY -455 KC TUNING RANGE -535 -1620 KC
UNLESS OTHERWISE SPECIFIED.
ALL RESISTORS 220% TOLERANCE
TUBE SOCKETS
Ar
5.8 U
600 KC
BOTTOM VIEW OF
ANT.
FM
Cell
3
ao F. m.OET. COIL
WH-BR
V
I9MMF
SPRING
wH-BL
wH-TEL
IS
MED
I2AU6
PWR.AMP.
2BE6
.05
CONV.
01: CONT.
R II, I.OMEG.
90V.
2200
L1.31
DISC.I F. TRANS, 10.7 MC
LI5Jtr.O.
LIMITER
3585
LswITCH ON VOL CONTROL R II
ILLIFD
C20 50
100011W W.
C21 AO
ALL VOLTAGES MEASURED FROM COMMON RETURN TO POINTS INDICATED WITH AN AC., D.C. OR VACUUM TUBE VOLTMETER
SOWATT 5
F M.CONNECTION
TiF, OEA,ANN, STRIPTENNA
.111.
Zenith Radio Model 7H822, Chassis 7E02
COUNTER -CLOCKWISE POS.- STD. BC.
CLOCKWISE POSITION - I.M. 100 M.G.
±10%
1.0 ILW.W.
I0.7MC
LII
2ND I.F.TRANS.
10.71.4C
__St-__
1ST I.F.TRANS
REAR VIEW OF BAND SWITCH WITH KNOB IN FULL CLOCKWISE POSITION.
SI
WH-RED
vol-OR
au I. F.
1.321.F.
r_
I2BA6
I2BA6
To avoid "hot" chassis, use an isolation transformer, or check A.C. voltage between chassis .-DIAL CORD and bench ground, and reverse plug for zero voltage. Alignment information is given on -.42 'WRNS AROUND the next page. TUNING SHAFT
UNLESS OTHERWISE SPECIFIED
ALL HE S1STORS ZO, TOLERANCE
COIL
F. M.A NT.
2
-ilfgazo' mur
R . F.
I2BA6
IS
12A06
LIMITER
C5 BC.ANT. 7 RIM. 1400 KC.
DENOTES CHASSID
Tot
2NOI.F.
RED
Ril
12BA8
W
16
.005
C6 BC. OSC. TRIM. 1600 KC
I. F.
126A6
PWR.AMP.
12BA6 R,F.
.1704
35135
rn
::11
19T8
MMF
CI"?
500
\
©
III
le
L+
0
9
1 ®
ft.
I.
.,_.,,
III
(b)
(c)
(c)
(c)
(c)
(c)
5
6
7
8
9
10
III
mmilh
(a)
4
3
2
1
Connect Oscillator to
88- I08M.C.
FM. 100
CI
TUNING RANGES Sao -1620 K. C. STD.BC.
111
ligla L3
Br%
270 ohms
270 ohms
.05 Mfd.
Pin 7 (grid) on 12BE6 converter tube socket.
Antenna Post FM (Remove line ant.)
.05 Mfd.
on 12BA6
.05 Mfd,
.05 Mfd.
.05 Mfd.
.05 Mfd.
Antenna
Dummy
0
Pin 1 (grid) 1st IF.
2nd IF.
fin I (grid) on 12BA6
limiter.
Pin 1 (grid) on 12AU6
limiter.
Pin 7 12BE6 Converter 2 turns loosely cpld. to wavemagnet 2 turns loosely cpld. to wavemagnet Pin 1 (grid) on 12AU6
0
DUMMY LUG
111 skr-t sio 0 ....-,,,
immiiiiaN.
-
Q
Unmodulated
FM
Unmodulated
100
FM
100
Unmodulated 98 Mc.
rm-
98 Mc.
FM 100
Unmodulated
FM 100
100
10.7 Mc.
Unmodulated
10.7 Mc.
10.7 Mc. Unmodulated
FM 100
10.7 Mc.
Unmodulated
BC
98 Mc.
98 Mc.
1400 Kc.
1600 Kc.
BC .
600 Kc.
C2
12,
13
of discr.
L4 Det. Coil Slug
L3 Osc. Coil Slug
IF trans. LIO and Lll Prim. and Sec. of 2nd IF transformer L6 and L7 Prim. and Sec. of 1st IF transformer.
L14 Prim. of 3rA
sec.
'
C20
L15 coil slug Primary discr. L16 coil slug
C5
C6
L8. 9,
9 LI I
12BA6
F. channel for maximum
0
le
DISC.I.F. TRANS.
reading.
Set Oscillator to dial scale. Align det. stage to maximum
Align 1st IF transformer for maximum reading.
Align 2nd IF transformer for maximum reading.
Align antenna stage. Align primary of discriminator for maximum reading. Adjust secondary of discriminator for zero reading. Align 3rd IF transFormer for maximum reading.
Set oscillator to dial scale.
Align I. output.
0--- LIS
I0.7MC
LI6-b
Purpose
10.7M.C.
4551.C.
0.-,...c
12AU6
L 14
_ 3RD I.F. TRANS.
AmP.m00.1 F. FREQUENCY FREQ.A.00.1.F.FREOUENC-
L 10
s
6
r -LI 3
2ND 1. F. TRANS.
4, .57 licc P 05
LIZ
Adj. Trimmers
MC.r
F.M.OSC. cr-L3 -, 9$
98 MC.
0.- L4 F.M.DET.
1-1_ 7
12BA6
rt.. 9
p4,05. :cc
'At
L6-.0
L 8-
Set Dial To
12BE6
12BA6
BC
100
Band
FM
-
0
L5
STAMP IN WHITE DEmTIFICATIOM COOE E A
455 KC. Modulated 1600 Kc. Modulated 1400 Kc. Modulated 10.7 Mc.
Input Signal Frequency
RED DOT
L2
E4
t ST I.F. TRAN S.
The signal generator output should be kept just high enough to get an indication on the meter. (a) Vacuum Tube Voltmeter Lug 6 on discriminator transformer to chassis (half discriminator load). Vacuum Tube Voltmeter Lug 3 on discriminator transformer to chassis (full discriminator load). COI(b) (c) Vacuum Tube Voltmeter from Limiter Grid to Chassis. (d) Loosen Slugs by applying a hot iron to the cement.
MODEL 7H822 CHASSIS 7E02
A vacuum tube voltmeter with an isolation resistor of 2,000,000 ohms in series with the hot lead will serve for FM adjustments. An AC output meter connected across, the primary or secondary of the output transformer will be satisfactory for all AM adjustments.
(d)
Operation
0
NI AR= IN
DUMm LUG
-
il
W
D11
2 AJ
'"11
ti
Q
ei
rl t) ti tj
1
Z Z
tri
1-3
hi
1
0
1'3
CD
0
X
(1)
111
Fa (1)
111
0
ti
P1/
Zinsurims
4:21
4
1.0 MEG.
RI
CI
2
L2
5
.05
C6
Mo5
MIAE
12
±DENOTES CHASSIS
BL
TUNING RANGE 535 16 20 K.C.
L3
105
C9
RETURN TO POINTS INDICATED WITH AN A.C., D.C. OR VACUUM TUBE VOLTMETER
48V.
R. F.
6SA7GT
L3
I
I
I
-I
UI
0.1
C28
50
±10%
1.0 MEG.
Rla
5
is`2,61175"1"
OSC. COIL
222V
479
R13
CONVERTER
PART NUMBER AS SHOWN.
LINE UP ACCORDING TO THE
0
479
.02R1,3
B
97
97v
yEL
0
,
B
UNLESS OTHERWISE SPECIFIED
ALL RESISTORS +20% TOLERANCE
C12
vOL.CONTROIJ
R9.1.0mEG.
4.4E
Cie
_ 101 4..100 RIB
MOOmmE
,5,.."A(E\---115
1111
DE T.-AM P.
6SQ7GT
R19
tr7v.A.C.,
1005
GR
vOL.CONTROL R9
SWITCH ON
BLIc
BLK-RED
Zenith Radio Corp.
50wATTS
PL -1
OR
IF ANY OTHER TYPE OF ELECTROLYTIC IS USED, IT WILL BE NECESSARY TO ADD PARTS SHOWN IN DOTTED LINES
NOTE' USE ONLY ZENITH NON -INDUCTIVE ELECTROLYTIC CONDENSER FOR REPLACEMENT.
R20
4709
.05
RED
300V
9
W.W.
±70%
P23 2700
3I5V.
RECT.
7
rn
Ib
t ri
Li
1-3
1
0
70 0 e
1:02
cc
225V.
BL
6X5GT
LC24 .40MFD.
mFD.
a C23
-
8
4
9-
000'
A..%..910
kiFDT40
-C
3
PWR .-A MR
6K6GT
MODEL 7R887 CHASSIS 7E22
RED-YEL
0
2209
NORMAL TREBLE VOICE 'ASS LOBASS (CLOSED) (OPEN) (OPEN @LOSED) (S)PEN) (CLOSED) RADIORGAN SWITCH
ALTO
war.
17
1I 250
0 )BL -9
220
R 19
a
471,
0
ALL VOLTAGES ARE D.C. UNLESS OTHERWISE SPECIFIED
SWITCH
REJECT
9 11A1,8,1
PHONO OSC.
SI
O
N
222V
. F.
2.2 MEG.
6. ±10%
I
6SK7
f, 229 B
'-4
C25
TI
a
40v. 6 5
L
C7
ON TRIPLE CAPACITORS LEADS
6SK7GT
ALL VOLTAGES MEASURED FROM COMMON
A
O
0)
I .F, FREQUENCY 4 55K.C.
WW?,M4-717-7
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n
,,,,40.110.
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Supreme Publications are Available at All Leading Radio Jobbers
