Transcript
DISC PLAYER
COMPACT
C 521 Schematics
NAD
C 521
COMPACT
DISC PLAYER
SAFETY INFORMATION CAUTION
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND
VARING - OSYNLING LASERSTRÅLNING NÄR DENNADEL ÄR ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STRÅLEN ÄR FARLIG.
INTERLOCKS DEFEATED.AVOID EXPOSURE TO BEAM.
ADVARSEL - USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG
VARO! -AVATTAESSAJASUOJALUKITUS OHITETTAESSAOLET ALTTIINANÄKTMÄTÖNTÄ LASERSÄTEILYLLE. ÄLÄ KAISO SÄTEESEEN.
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.
ADVARSEL - USYNLIG LASERSTRÅLING VED ÅBNING, NÅR
VORSICT! - UNSICHTBARE LASERSTRAHLUNG TRITTAUS, WENN
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSÆTTELSE FOR STRÅLING.
DECKEL GEÖFFNET UND WENN SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT IST. NICHT DEM STRAHLAUSSETZEN.
CLASS 1 LASER PRODUCT
CATU IO ADVA N HGKJDHSGKJHG RSEL SJK KBVNCL HGK KNB
JDHSGK JHGS KNVLKN CVNCLV K JK HGKLFH ;L;HJM LKDJLK NMD FHJHSG MMKJHG SJK
CVLKNL
ADVA
RSEL
HFKLJH
JLDKLJ
VARI
NG
KLH
HGK
KFG
JDH
;LK
VARO
SGK
NG;
JHG
LKJ
! HGK GF;LKJGF;LKJKLGDJH NCL FL; JDH KNB VORS CVLKNLKNVSGKJHJBJKBKJ SJK ICT! LKNCVNCLV BJKGS JHF
KBV
KLJ
HJL
K JK
HGK
DKL
JLK
LFH
DJL
;L;
KFH
HHB
JHS
HHJ
GKJ
D
HGS
JK
The lightning flash with arrowhead, within an equilateral triangle is intended to alert the user of the presence of uninsulated "dangerous voltage" within the product’s enclosure; that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
2
SERVICE SAFETY PRECAUTIONS 1.
Replacing the fuses
CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. Reference No
Part Number
Description
M502-M504 M502-M504 M505 M505
5120-0020-0 5120-0018-0 5120-0052-0 5120-0050-0
FU T1A 250V UL/CSA 5X20MM FU T1A 250V SEMKO/UDE 5X20MM FUSE T1.6A 250V 5X20MM UL/CSA FUSE T1.6A/250V 5X20MM SEMKO/VDE
*AH *C *AH *C
NOTE: <*AH > : USA, CANADIAN MODEL ONLY. <*C > : EUROPEAN MODEL ONLY. 2. Safety check out (Only U.S.A. model) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended by the manufacturer.
CONTENTS DESCRIPTION
PAGE
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-16 IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-20 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22-26 MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 3
SPECIFICATIONS Disc Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . One Disc, 120 or 80 mm Decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BURR-BROWN Delta Sigma 20bit Digital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Times oversample Analog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 pole active Frequency Response . . . . . . . . . . . . . . . . . . . . . . +/- 0.5 dB, 5Hz - 20kHz De-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.3 dB THD (at 0 dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . 0.007% Intermodulation Distortion . . . . . . . . . . . . . . . . . . . < - 100 dB (19 + 20 kHz) Dynamic Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 dB Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.5 dB, 0 dB to -80 dB Signal / Noise Ratio (A-Weight) . . . . . . . . . . . . . . .
100 dB, De-Emphasis on 100 dB, De-Emphasis off
Channel Separation 1kHz . . . . . . . . . . . . . . . . . . >90 dB 10 kHz . . . . . . . . . . . . . . . . . >80 dB Wow and Flutter . . . . . . . . . . . . . . . . . . . . . . . . . . Unmeasurable (Quartz Crystal Accuracy) Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 200 Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . 2.2 V rms Digital Error Correction . . . . . . . . . . . . . . . . . . . . . IRC with double error correction in C1 and C2 Digital Code Output . . . . . . . . . . . . . . . . . . . . . . . . Sony / Philips Serial data format
CONTROLS Play / Pause, Stop, Random, Skip (< >), Scan (< >), Open, Time, Repeat.
PHYSICAL SPECIFICATIONS Dimensions (Width x Height x Depth)
435 x 80 x 285 mm
Net weight
4 kg (8.8 lbs)
Shipping weight
5.1 kg (11.22 lbs)
4
REAR PANEL / FRONT PANEL
REAR PANEL
1. LINE OUT
3. AC LINE CORD
2. DIGITAL OUT
FRONT PANEL
1. POWER ON / OFF
7. STOP
2. DISC DRAWER
8. REPEAT
3. DISPLAY
9. RANDOM
4. OPEN
10. SCAN Back (
5. PLAY / PAUSE
11. SKIP Back (
6. TIME
5
) / Forward ( ) / Forward (
) )
DISASSEMBLY INSTRUCTIONS
1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from the side panels. Remove tapping screw 3.0 x 8.5 5 from the back panel. Refer to Figure No.1. 5
4
3
2
Figure No.1
1
2. Pull both sides of the TOP COVER slightly outwards 6 and tilt approx. 35˚ and then remove in the direction as indicated by the arrow 7 . Refer to Figure No.2.
7
6
6
Figure No.2.
6
7
U504 POWER FOR EL LIGHT
PICK UP
PU-IN LIMIT SWITCH
SLED MOTOR
SPINDLE MOTOR
LOADING MOTOR LIMIT SWITCH
LOADING MOTOR 2
10
6
18 28
25 26
13
3
6
20 21
U201 LA6541 FOCUS & TRACKING MOTOR 10 11 DRIVER
5
U701 LB1641 MOTOR DRIVER
5
D506 RECTIFIER DIODES
D501-D504 RECTIFIER DIODES
-12V
D514-D517 RECTIFIER DIODES
+12V U502-3,U506 ANALOGUE POWER
+5V
U501,U507 DIGITAL POWER
+8V
CD MECHANISM UNIT
M502 EL LIGHT
DISC
5V
31 35
Q101
27 29 63 62
15 16 1
43
4
44
40
EFM
CLV+
CLV-
TGL
TOFF
29
43
44
67 42
11
33
5 37 34
3
63 65
6
23
M102
56
U301 LC78621 DIGITAL SIGNAL PROCESSOR
10
13
14
24
23
M103
M109
AC POWER I / P
U101 LA9240 34 ANALOG SIGNAL PROCESSOR/SERVO 39
30
T1
POWER TRANSFORMER
M101
M110
REPEAT M104
KEYBOARD
RANDOM M106
M111
22
21
3
2
1
19
2
4
3 6 U403 74HC00 NAND GATE
U302 PMC1710 DAC
Q401- Q403 MUTE CIRCUIT
32
31
U401 LC587206A SYSTEM CONTROL CPU & LCD DISPLAY DRIVER
TIME M108
M112
13
16
L
U306
Q301-Q304 MUTE
2
62
U305
L301 DIGITAL COIL
M303 EMC FILTER
R
39
M501* LCD DISPLAY
1
M318 RCA JACK DIGITAL OUTPUT
R
L
M113 REMOTE SENSOR
M317 RCA JACK
CD AUDIO O/P
BLOCK DIAGRAM
8
LIVE
NEUTRAL
M805 BROWN
L401
M803 BROWN
J403
LIVE BOARD
J406
J404
J407
DISPLAY BOARD
J401
M509A BLACK
M102 (15 PINS)
M500A J402 BLACK
MAIN BOARD
M505A WHITE
CD MECHANISM
J402
115V:J401,J404 230V:J403
8V 0V 0V 8V 15V 0V 15V
1723-006A-0000 ISSUE B
TRANSFORMER BOARD
M101 (5 PINS)
M105 (6 PINS)
M505B WHITE
KEYBOARD
M120 BLACK
WIRING DIAGRAM
RF PATTERN TESTING
NAD - C 521 PCB TESTING POINTS DIAGRAM
TESTING PROCEDURE (1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode. (2) Connect the scope to R132 (Pin 41 of U101) and DGND (J334). Scope setting: Coupling : AC. Vertical sensitivity : 0.2 V/ div. Horizontal time base : 0.5 µS/div. (3) Observe the waveform is 2.0V p-p +/-5% and the eye pattern is at its best shape (see FIG. 1).
FIG. 1 (a)
FIG. 1 (b) Poor eye pattern 3T 4T 5T — 11T
FIG. 1 (C) Good eye pattern
9
IMPORTANT NOTES INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP
Electrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to prevent any electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a ground band (1M ohm) that is properly to remove any static electricity that may be charged on the body. 2. Ground for Work Bench Be sure to place a conductive sheet (1M ohm) or copper plate with proper grounding on the work bench or other surface on which the pick-up is to be placed. 3. Because the static electricity charge on the clothing does not discharge through the body grounding band, do not let clothing to get in contact with the pick-up unit. INCORRECT
CORRECT 1.Grounding band 1M ohm
1M ohm 2.Conductive Sheet or Copper Plate
NOTE: Laser diodes are so susceptible to damage from static electricity that even if a static discharge does not ruin the diode, it can shorten its life or cause it to work improperly.
PRECAUTIONS FOR CHECKING BEAM EMISSION
The laser beam of this unit is focused on the reflecting surface of the objective lens in the optical system block. Therefore, keep your eyes at least 12 inches (30 cm) away from the objective lens when the laser diode is ON. (Operation Check Method for Laser Diode and Focus Search Function.) When the POWER switch is turned ON after the chucking plate is removed, observe the objective lens and confirm that the following operations are performed properly. (The optical system should be at the lead-in area position when it is checked at this time.) (1) The laser should be at the innermost position after the chucking plate is removed. (2) The diffused light of the laser beam can be seen when the POWER switch is turned ON. (3) Vertical (up and down) movement of the objective lens (2 or 3 times) will take place. 10
PRECAUTIONS WHEN CHANGING LASER PICK-UP
When removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing in order to protect the pick-up before removal. NOTE: Replacement pick-up assemblies are supplied with the PCB pattern already protected. DO NOT REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICKUP.
Protective soldering place for laser diode
Caution: Laser diodes are extremely susceptible to damage from static electricity. Even if a static discharge does not ruin the diode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, a grounded soldering iron, and so on, to protect the laser diode from static damage. Ground Conductive Wrist Band for Body
Soldering Iron with Ground wire
Ground Line Less than 10 ohm
Conductive Gum Mat 11
PCB LAYOUT
J401
8V 0V 0V 8V 15V 0V 15V
J403
J404
115V:J401,J404 230V:J403
L401 J407
1723-006A-0000
TRANSFORMER BOARD
ISSUE B
J406
LIVE BOARD
KEY BOARD
DISPLAY BOARD
12
J402
MAIN BOARD
13
14
M501
M502
3.5V
3.4V
3.4V
*2.9V 3.5V
3.4V
*3.3V 3.5V
2.5V
2.5V
2.5V
2.4V
2.5V
*5V 0V
*7.4V 7.8V
*7.4V 7.8V
5V
0V
0V
0V
0V
0V
4.3V
0V
0V
1.1V *2.7V
3.5V
1.2V *2.7V
2.5V
2.2V
2.5V
3.4V
*0V
4.9V
0V
4.9V
*1.2V
*0V
4.8V
0V
4.8V
0V
0V
1.6V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
0V
0V
0V
0V
0V
0V
4.9V
4.9V
0V
2.3V
0V
0V
0V
0.2V
0V
*0V 4.9V
0V
*0.4V 0V
0V
2.5V
2.5V
2.3V
*0.3V 0V
0V
5V 2.4V
2.5V
5V
5V 2.4V
2.5V
1.5V
5V 2.4V
0V 0V
1.7V
5V 2.4V
5V 4.9V
4.8V 5V *7.4V 7.8V
15
0V
0V 2.4V
0V
4.9V 2.4V
0V
0V 2.4V
*1.4V 4.6V
4.9V 2.4V
0V
5V 5V
0V
0V
5V
4.9V
4.9V
0V
5V
5V
0V *1.8V
0V
0V
0V
4.8V
4.7V
0V
1.6V
3.3V
0V
0V
0V
2.4V
0V
0V
#4.9V ¨0V 2.4V
0V
4.9V 2.4V
2.3V 0V 2.4V
0V
4.9V 2.4V
2.2V 4.8V 2.4V
SCHEMATIC DIAGRAM
¨4.9V #0V 2.4V
0V 2.6V
0V 2.4V
2.4V
2V
2.3V
3.7V
0V
2.4V
4.9V 0V
4.9V 0V
4.9V 0V
0V
0V
2.4V
2.4V
3V *1.6V
0V *1.8V
0V
0.5V
0.7V
7.8V
7.8V
0V
0V
0.5V
0.7V
¨0.06V #4.2V
0V
0V
2.4V
5V
5V
0V
0V
0V
2.4V
4.9V 0V 2.3V 0V 5V 5V 0V 2.4V 2.5V 5V
2.3V 2.3V 0V 5V 5V 0V 2.4V 2.5V 0V
0V
0V
5V
2.1V
16
RESISTORS: M- METAL FILM CARBON FILM UNLESS OTHERWISE SPECIFIED.
NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/8W. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V 10%. 3. COMPONENTS MARKED “ ” ARE SAFETY CRITICAL PARTS. 4. VOLTAGE SPECIFIED ON THE IC’S PIN WHICH DOES NOT HAS MARKING IS IN STOP MODE, MARKED WITH “*” IS PLAY MODE, “#” IS TRAY OPEN MODE AND “Δ“ IS TRAY CLOSE MODE.
2.4V
*1.2V 3V
57 56
DEF
58
CLK
REFI
59
55 54 53 52 51 50
49
CL
VR
60
DAT
LF2
61
CE
PH1
62
DRF
BH1
63
FSS
LDD
64
APC
VCC2
LDS
U101: LA9240
VCC1
IC BLOCK DIAGRAM
REF 48 NC
RF DET
FIN2 1 FIN1 2
47 TBC
VCA
I/V
46 FSC
E 3
BAL
- com INTER FACE
VCA
F 4
SLC
45 DGND 44 SLI 43 SLC
TB 5
42 RFS–
TE
TE– 6 TE 7 TESI 8
41 RFSM
RF Amp
T.SERVO & T.LOGIC
40 CV+
SCI 9
39 CV– 38 SLOF
TH 10
37 HFL 36 TES
TA 11
35 TOFF 34 TGL
TD– 12
F.SERVO & F.LOGIC
SLED SERVO
SPINDLE SERVO
33 JP+
TD 13 JP 14
TO 15 FD 16
JP–
SLD
SL+
30 31 32
29
SL–
28 SLEQ
27 SPD
SP–
SPI
TST11 69
SPG
TAI 2
SP
FA
PCK 21
FE
FD–
ISET
21 22 23 24 25 26 AGND
20
FE–
19 FA–
18
5
17
DEFI
1
EFMIN
11
FSEQ
22
CLV+ CLV–
13
V/P
15
Slice level control
VCO clock Oscillator Clock control
SUBCODE SEPARATION Q CRC
WRQ,SQOUT 63,65
MICROPROCESSOR INTERFACE
COIN RWC DEMO
66
TST10
TSET1
TEST2
TEST3
TEST4
TEST5
VDD
VSS
37
80
12
26
31
74
27
8
Antishock interface
Level meter Peak meter
8x oversampling digital filters
30
46
TGL
RCHP 53 RCHN 52 LVDD,LVSS 47,50 LCHN 49 LCHP 48
55
MUTER
78
XOUT
RVDD,RVSS 51,54
77
XIN
CK2
62
FSX
43
58
EFLG
XVDD,XVSS 76,79
75 73
72
70
LASER 16M 4.2M CS CONT
71
32
EMPH
THLD,TGL 24,25
23,29
20,28
18 68,19
16,17
1bit DAC
FST,FOCS FZD HFL,RES TES,JP+ TOFF,JP–
56
DOUT
38 39 40 41
ASDACK ASDFIN ASDFIR ASLRCK
36 35 34 33
DACKO DFOLO DFORO LRCKO
Digital attenuator
Crystal oscillator system Timing generation
17
44
LRSY C2F ROMXA
45
Digital output
C1 AND C2 ERROR DETECTION AND CORRECTION FLAG PROCESSING
SERVO COMMAND
64
42
Interpolation and muting
CLV DIGITAL SERVO
PW,SBCK 59,61 SBSY,SFSY 57,60
67
RAM address generator
2K x 8-bit RAM
SYNCHRONIZATION DETECTION EFM DEMODULATION
14
CQCK
3
4
EFMO VVDD VVSS PDO 9
6
EFMO 10
U301: LC78621ED
U302: PCM1710U LRCIN 1 DIN 2 BCKIN 3 CLKO 4 XTI 5 XTO 6 DGND 7 VDD 8 VCC2R 9 AGND2R 10 EXT1R 11
28 ML/DSD
Input Interface Digital Filter
27 MC/DM2
Mode Control
26 MC/DM1 25 MUTE
Timing Control
24 MODE 23 CKSL
Noise Shaper
22 DGND 5-Level DAC Right
5-Level DAC Left
Low Pass Filter Right
Low Pass Filter Left
21 VDD 20 VCC2L 19 AGND2L 18 EXT1L
EXT2R 12 VOUTR 13 AGND1 14
CMOS Amp Right
17 EXT2L
CMOS Amp Left
16 VOUTL 15 VCC1
U305-U306: NE5532 AMPLIFIER 1
AMPLIFIER 2
OUTPUT
1
INVERTING INPUT
2
8 V+ 7 OUTPUT – +
+ –
NON-INVERTING INPUT
3
6 INPUT
INVERTING
V–
4
5 INPUT
A1
1
14
VCC
B1
2
13
B4
Y1
3
12
A4
A2
4
11
Y4
B2
5
10
B3
Y2
6
9
A3
GND
7
8
Y3
NON-INVERTING
U403: TC74HC00
18
Vcc
19
REG IN 15
REG OUT 14
Regulator
Level Shift 2
RESET
Level Shift 3 11K
16 RES
17 CD
18 V IN3
Input logic circuit
V IN2 13
9
19 VG3
10
P2
VG2 12
Predriver
8
20 Vo5
OUT1 VCC2 OUT2
Vo4 11
21 Vo6
5
Vo3 10
IN1
22 GND
2
GND 9
3
23 GND
P1
GND 8
BTL AMP 3
24 GND
GND 7
BTL AMP 2
25 Vo7
Vo2 6
BTL AMP 4
28 V IN4
26 Vo8
BTL AMP 1
11K
Vo1 5
Level shift 4 27 VG 4
Level shift 1
GND
VG 1 4
11K
11K
29 V REF
MUTE 2
V IN1 3
30 VCC
VCC 1
U701: LB1641 VCC1
7
4 VZ
6 IN2
1
U201: LA6541D
M4
M3
TST
SEG01
SEG02
SEG03
SEG04
SEG06
SEG05
SEG07
SEG09
SEG08
SEG11
SEG10
SEG13
SEG12
U401: LC587206A
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
52
29
M3
SEG18
53
28
M2
SEG19
54
27
M1
SEG20
55
26
K4
SEG21
56
25
K3
SEG22
57
24
K2
SEG23
58
23
K1
COM4
59
22
S4
COM3
60
21
S3
COM2
61
20
S2
COM1
62
19
S1
CUP1
63
18
CFOUT
CUP2
64
17
CFIN
8
9 10 11 12 13 14 15 16
ROM
VDD
7
VSS
6
VDD1
5
VDD2
4
XTIN
3
P4
2
XTOUT
1
P3
M4
SEG17
P2
30
P1
51
S03
N1
SEG16
S04
31
S01
N2
50
S02
32
SEG15
INT
49
RES
SEG14
S port K port
OPG
M port
PC STACK DPF
SO port DP
Serial interface
BNK P port
APG
OSC1
RAM
OSC2
ACC
Base timer (freerunning timer)
ALU Breg
Watchdog timer Table reference function
Reset function
Insert Stand by Data decoder
Alarm signal generator
Strobe decoder
N port Carrier control circuit
Segment RLA LCD driver
8-bit reload timer (timer 2)
Segment pins 8-bit preset timer (timer 2)
Common pins
20
Note: Shaded blocks can be selected by the user as mask options.
TROUBLESHOOTING GUIDE
SET POWER SWITCH TO ON. NO IS POWER TURNED ON ?
YES
NO
CHECK POWER SUPPLY CIRCUIT NORMAL ? YES IS OSCILLATOR CIRCUIT OSCILLATING ?
M502, M503, M504, M505 DEFECTIVE NO
CAN TRAY BE OPENED ? YES
CHECK FUSES M502, M503, M504, M505 OPEN ? YES
NO
IS THERE OPEN/ CLOSE KEY SIGNAL INPUT ? U401 PIN 21,22
NO
NO
POWER SUPPLY PATTERNS OPEN OR U501-U504,U506-U507 DEFECTIVE.
NO CRYSTAL M401 DEFECTIVE.
M101 SWITCH, DEFECTIVE OR PATTERN AND CONNECTOR OPEN.
YES CHECK OPEN/ CLOSE SIGNAL AT U401 PIN 21 PIN 22 TRAY OPEN H L TRAY CLOSE L H
CAN TRAY BE CLOSED ?
NO MICROPROCESSOR IC U401 DEFECTIVE.
YES IS LOADING MOTOR DRIVE CIRCUIT OPERATION NORMAL ? U701, PIN 2,10
YES
NO MOTOR DRIVE IC U701 DEFECTIVE.
YES LOADING MOTOR AND LEAD WIRE DEFECTIVE OR LOADING PART OF MECHANISM DEFECTIVE.
U101 DEFECTIVE. NO
NO DOES INITIAL READING OCCUR ?
NO
NO
CHECK LASER LIGHT ?
DOES LENS MOVE UP AND DOWN ?
YES
YES RF SIGNAL OUTPUT ?
CHECK LASER CIRCUIT CORRECT ?
YES
YES
YES
FEED MOTOR OR WIRING DEFECTIVE.
CONNECTION OR PICKUP DEFECTIVE. NO
U101 DEFECTIVE.
CAN DISC BE PLAYED ?
NO
NO
CHECK TRACKING SERVO CIRCUIT CORRECT ?
SERVO IC U101 OR U201 DEFECTIVE.
YES YES
CHECK DISC OR MECHANISM AND CONNECTOR NO
AUDIO OUTPUT IS CORRECT ?
NO IS POWER SUPPLY NORMALLY ?
CHECK POWER SUPPLY PATTERNS.
YES NO M302 OR U302 DEFECTIVE.
CHECK CLOCK PULSE AT PIN4 OF U302 YES CHECK OUTPUT PULSE AT PIN 42,43,44 OF U301
NO IC U301 DEFECTIVE.
YES YES
NO CHECK OUTPUT SIGNAL AT PIN 13,16 OF U302
IC U302 DEFECTIVE.
YES NO CHECK OUTPUT SIGNAL AT PIN 1,7 OF U305, U306
IC U305 OR U306 DEFECTIVE.
YES NO CHECK OUTPUT SIGNAL AT PIN 7,1 OF U305, U306
IC U305 OR U306 DEFECTIVE.
YES OK
NO CHECK MUTE CIRCUIT Q301, Q302, Q303, Q304 YES LINE OUT PLUG OR PATTERNS DEFECTIVE.
21
MUTE CIRCUIT DEFECTIVE.
CHECK FOCUS SIGNAL OUTPUT ? YES CHECK CONNECTION OR PICKUP.
MECHANISM EXPLODED VIEW
CD11CA
27
29
0006
0021
0007
0202
0001
0205
0022
0008
0010
0226
0320
0205
0023
0019
0228
0225
0002
0218
0209
0227
0219
U501
0205
U506
0226
U507
!
0003
0202
0208
0018
0013
!
0014
0101
0020
0304
!
0211
T1
0223
0224
0012
0005
0201
0205
U503
M317
0202
0202 0202
EXPLODED VIEW
PACKING DIAGRAM
36 37 44
43
38 39 40
36
45
42 41
ITEM 36 37 38 39 40 41 42 43 44 45
PART NO.
DESCRIPTION
1490-3783-0 1497-1332-1 1497-1432-0 4060-0530-0 2103-7302-1 8900-2166-0 1497-1302-1 4301-4104-1 1497-1062-0 1435-4300-1-2
POLYFOAM ENDCAP UNIT POLYBAG FASCIA COVER BATTERIES RCA CABLE REMOTE CONTROL HANDSET REMOTE CONTROL POLYBAG INSTRUCTION MANUAL MANUAL POLYBAG CARTON BOX
Q’TY 2 1 1 2 1 1 1 1 1 1
Proprietary information for servicing purposes only. The information herein may not be used commercially without the prior written agreement of NAD Electronics International, Toronto, Canada. 31
