Transcript
HAIER COLOR TELEVISION
SERVICE MANUAL
PART # TV-8888-30
HAIER AMERICA TRADING, LLC www.haeiramerica.com
1
TABLE OF CONTENTS
Product Code Explanation and Series Introduction Features Safety Precautions Warning and Cautions General Servicing Precautions Net Dimension Parts and Functions Remote Controller Function Program Diagram Maintenance Service and Troubleshooting Circuit Diagram Circuit Block Diagram PCB Circuit Explanation Adjustment Information of Resistors and Capacitors Abbreviation of Part Name and Description Terminal View of Transistors
3 4 5 6–7 8 – 13 14 15 16 17 18 – 21 22 23 24 25 – 26 27 28 29 30
2
PRODUCT CODE EXPLANATION AND SERIES INTRODUCTION
3
FEATURES
FUNCTION
MODEL HS2190
NO.
1
Main IC
76814
2
CRT Color system
NO.
3
ITEM
PICTURE
Audio system Number of channels OSD language Multi-picture modes
4 5 6 7 8
AUDIO
AV stereo Super woofer Surrounding sound Treble/bass boost Left/right balancer
9 10 11 12 13
NICAM Multi-audio modes Tone adjuster
14 15
FUNCTION
MODEL TV9708
24
Digital curtain
×
FS
25
Slow fading on & off
×
NTSC
26
Semitransparent menu
×
M
27
Non-flashing channel changing
×
181
28
ZOOM
×
E F S
29
16:9 mode
×
√
30
Games
×
×
31
Calendar
×
×
32
Child-lock
×
×
33
Multi-functional lock
×
×
34
No-picture listening
×
√
35
Background light
×
×
36
Auto-timer on
√
×
37
CCD
√
×
38
V-CHIP
√
ITEM
SOFTWARE
16
MTS/SAP
×
39
Number of built-in speakers
1
17
Auto-volume leveling
×
40
Audio output power (W)
2W
18
AV input
Front 1
41
Total power input W
58
19
AV output
×
42
Voltage range (V)
~120
20
DVD terminal
×
43
Power frequency (Hz)
60
S-video jack
×
44
Time of sleep timer (MINS)
120
×
45
Net weight (lbs
20.2
×
46
Gross weight (lbs)
25.3
21 22 23
JACK
Headphone socket SCART socket
PARAMETER
47
Net dimension (inch)
13.9 × 14.9 × 12.9
48
Packaged dimension (inch)
17.1 × 17.1 × 15.7
49
Quantity for 20' container
×
50
Quantity for 40' container
×
51
Quantity for 40' high container
×
4
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE These parts identified by many electrical and mechanical parts in this chassis have specific safety-related characteristics. It is essential that these specific safety parts be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other hazards. Do not modify the original design without permission of the manufacturer. General Guidance An Isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents that might result in personal injury caused by electrical shocks. It will also protect the receiver and its components from being damaged by accidental shorts of the circuitry that might be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one. When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 0.39-inch away from PCB. Keep wires away from high voltage or high temperature parts. Due to the high vacuum and large surface area of the picture tube, extreme care should be taken in handling the Picture Tube. Do not lift the Picture Tube by its Neck. X-RAY Radiation Warning: The sources of X-RAY RADIATION in this TV receiver are the High Voltage Section and the Picture Tube. For continued X-RAY RADIATION protection, the replacement tube must be of the same type as specified in the Replacement Parts List. Before returning the receiver to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to make sure that the set is safe to operate without any danger of electrical shock.
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WARNING AND CAUTIONS
1. When you clean the TV set, please pull out the power plug from AC outlet. Don't clean the cabinet and the screen with benzene, petrol and other chemicals.
4. To prevent the TV set from firing and electric shock, don't make TVTV setset rain leavethe the orinmoisture. the rain or exposed to moisture.
prolong the life ofusing the TV 2.2.InTo order to prolong the lifeset, of the ensure it is set place up in ait well-ventilated TV set, please on a ventilated place. place.
Do not open the back cover, 5.5. Don't open the back cover, otherwise it is possible damage to the inner possible to damage the components in the components of the TV set may occur. TV set and harm you.
3.Avoid Don't exposing place the TV i n tot h e the set TV set sunshine or Sunshine or near heat source. near a source of
the TV set is not being used or 6.IfWhen the TV set isn't going to be used during thunder/lightening conditions, for long time or it is in thunder and please pull out the plug from the AC lightening, please pull out the plug from AC outlet and remove the Antenna plug outlet and the antenna from the cover of theplug set.from the cover of the TV set.
heat/radiation.
6
Explanation on the display tube Generally, it is not required to clean the tube surface. However, if necessary, its surface can be cleaned with a dry cotton cloth after putting off the power. Don’t use any cleanser. Avoid using a hard cloth; the tube surface will be damaged.
CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS.
NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions. NB: Remember; Safety First.
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GENERAL SERVICING PRECAUTIONS 1. Always unplug the receiver AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board module or any other assembly of the receiver. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. CAUTION: A wrong substitution part or incorrect installation polarity of electrolytic capacitors may result in an explosion. d. Discharging the picture tube anode. 2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage-measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by “drawing an arc”. 3. Discharge the picture tube anode only by (a) First connecting one end of an insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) Touch the other end of the insulated clip lead to the picture tube anode button, using an insulating handle to avoid personal contact with high voltage. 4. Do not spray chemicals on or near this receiver or any of its assemblies. 5. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength) CAUTION: This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts is not required. 6. Do not defeat any plug / socket B+ voltage interlocks with which receivers covered by this service manual might be equipped. 7. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 8.
Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last.
9. Use with this receiver only the test fixtures specified in this service manual. CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.
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Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components are usually called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductorequipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static type folder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use Freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise even some normally harmless motions such as mutual brushing of your clothes’ fabric or lifting of your foot from a carpeted floor might generate static electricity sufficient to damage an ES device.)
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General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range of 500 oF to 600 oF. 2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well tinned. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch) brush with a metal handle. Do not use Freon-propelled spay-on cleaners. 5. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature. (500 oF to 600oF) b. Heating the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suction-type solder removal device with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil. 6. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature. (500oF to 600oF) b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts. c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil. d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush. Removal /Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are of slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined. Removal De-solder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.
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Replacement Carefully insert the replacement IC in the circuit board. Carefully bend each IC lead against the circuit foil pad and solder it. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas). “Small-Signal” Discrete Transistor Removal/Replacement Remove the defective transistor by clipping its leads as close as possible to the component body. Bend into a “U” shape the end of each of three leads remaining on the circuit board. Bend into a “U” shape the replacement transistor leads. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the “U” with long nose pliers to insure metal to metal contact then solder each connection. Power Output, Transistor Device Removal/Replacement Heat and remove all solder from around the transistor leads. Remove the heat sink mounting screw (if so equipped). Carefully remove the transistor from the heat sink of the circuit board. Insert new transistor in the circuit board. Solder each transistor lead, and clip off excess lead. Replace heat sink. Diode Removal/Replacement Remove defective diode by clipping its leads as close as possible to diode body. Bend the two remaining leads perpendicularly to the circuit board. Observing diode polarity, wrap each lead of the new diode round the corresponding lead on the circuit board. Securely crimp each connection and solder it. Inspect (on the circuit board copper side) the solder joints of the two “original” leads. If they are not shiny, reheat them and if necessary, apply additional solder.
11
Fuse and Conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely clamp the leads of the replacement component around the notch of the top stake. 3. Solder the connections CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds foil to the circuit board causing the foil to separate from or “liftoff” the board. The following guidelines and procedures should be followed whenever this condition is encountered. At IC Connections To repair a defective copper pattern at IC connections, use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections). 1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary). 2. Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern. 3. Bend a small “U” in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. 4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire. At other connections Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board. 1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to insure that a hazardous condition will not exist if the jumper wire opens. 2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern. 3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.
12
Carefully clamp and solder the connections. CAUTION: Ensure the insulated jumper wire is dressed so that it does not touch components or sharp edges.
13
NET DIMENSION
14.4
13.8
13.1
14
PARTS AND FUNCTIONS
15
REMOTE CONTROLLER FUNCTION
16
PROGRAM DIAGRAM Insert the power plug into the power line socket and insert the antenna plug into the antenna socket on the rear panel. Press down the power switch of the TV set. The red indicator light goes on. Program preset A (1). Auto searching and storing program ” key to select the bar Press MENU button on the remote controller then use the “ “Auto program” then press the “ ” to make sure. If you want to stop, press the key “ ”. (2) Deleting channel number ” key in selecting the bar Press MENU to call Menu. Then use the “ “ADD/DELETE”, then press the “ ” to select ADD or DELETE. B. Volume tuning Press VOLUME buttons VOL - to decrease and VOL+ to increase the volume.
17
MAINTENANCE SERVICE AND TROUBLE SHOOTING Vertical and horizontal scan adjustment: 1. Input digital figure signal (5-circle figure). 2. Press ‘GEO’ key of the alignment remote controller to call out the scan parameter menu as follows:
OSD
DESCRIPTION
RANGE
REFERENCE
H.PHASE
Horizontal phase
0-30
16-17
V.POSI
Frame center
0-63
48
V.SIZE
Frame range
0-127
80
NO SO POWER OFF
Blank signal auto-off
Yes/No
Yes
V SC
Frames adjustment
0-31
8
VLIN
Frame linear adjustment
0-31
10
Note: Use the ‘p+’ and ‘P-‘ to move the cursor to select a certain item; the selected item is highlighted with red while other unselected remain green. Use ‘V+’ and ‘V-’ to change the parameter of the selected item. 1. Press the ‘PICTURE’ key of the alignment remote controller again to save the changed parameter. Factory configuration settings: Press ‘PROD’ key to enter the first page of the main menu of the factory Configuration. There are 14 items under this menu. By pressing the ‘PROD’ key again to enter the second page of this menu; there are 6 more items are listed below:
OSD
Description
Range
Reference
CTTST
Test control
0-1
0
HFREQ
Horizontal frequency 0
0-63
29
VSPUP
Field simultaneous sensitivity 0=High, 1=Low
0-1
0
GMODE
Gray mode, 0=100%, 1=50%
0-1
0
V-LIN
Frame linear (set in GEO)
0-31
10
RGDEF
R.G output compensation
0-1
0
BGSLC
B output compensation
0-3
0
AFG&G
AFC gain 0=high 1=low
0-1
0
OSCNT
OSD signal gain
0-3
2
CBYPS
Set the intermediate frequency parameter of Internal tint band-pass filter
0-1
0
18
CRB/W
Test mode: 0=normal, 1=dark field, 2=bright field 3=cross figure signal
0-3
0
HBLKL
Left blanking
0-7
0
HBLKR
Right blanking
0-7
0
BSHLD
ABL door limit
0-7
3-4
EMABL
Emergency ABL remove switch:0=on, 1=off
0-1
0
MDSTP
Use brightness to release ABL, 0=off,1=on
0-1
0
FMLBL
FM output accuracy
031
16
BRABL
Brightness ABL switch 0=off, 1=on
0-1
1
VDLBL
Video demodulation output range 0=small, 1=large
0-7
7
PASSW
V-CHIP function 0=OFF, 1=ON
0-1
1
1. Simulation preset 1) Input color bar signal; 2) Press ‘MENU’ key, set color, contrast, color saturation, tint at medium Position; 3) Press ‘DP’ key of the alignment remote controller to call out the menu that contains the following items: OSD
Description
Range
Reference
Sub brightness
Preset brightness
0-127
60
Contrast
Preset contrast
0-27
27
Tint
Preset tint
0-77
35
Color
Preset color saturation
0-27
14
4) When done, press ‘PICTURE’ to save the result. Adjusting the whiteness level: 1) Press ‘GEO’ of the alignment remote controller, set the item ‘NO SD POWER OFF YES’ to ‘NO’, keep the TV power on for over 30 minutes. 2) Degauss the CRT. 3) Input bright field signal through AV channel. 4) Connect white level test equipment to the set. 5) Press ‘W/B’ key of the alignment remote controller to call out the following menu: OSD
Description
Range
Reference
RD
Red stimulate potential
0-127
64
GD
Green stimulate potential
0-15
7
BD
Blue stimulate potential
0-127
64
RB
Red stop potential
0-255
Preset 127,adjust 127
GB
Green stop potential
0-255
Preset 127,adjust 250
BB
Blue stop potential
0-255
Preset 127,adjust 220
19
Set the above items to medium position and then press ‘SCAN’, adjust the raster potential regulator until the bright line on the screen turns down to a dark line, which is just visible. Adjust using the following keys until the line turns white {1 (RB+)/2 (RB-) 3 (GB+)/4 (GB-) 5 (BB+)/6 (BB-)}, and then press ‘SCAN’ again, use the alignment remote controller ‘V+’,’V-‘,’P+’,’P-‘ key to adjust ‘RD’,’GD’ and ‘BD’ until the whole screen turns white. 6) If a white level test equipment is available, adjust the above until a proper effect is gained. 7) Press ‘PICTURE’ to save the results; 8) Press ‘GEO’ key, set back the ‘NO SD POWER OFF’ item to yes.
20
1. No Light No light and sound
Check to see if Fuse 3 is normal
Abnormal
Normal
Check to see 103V etc. Voltage is normal
Check VD504, C507, V513, etc.
Normal Abnormal Check to see if the collector voltage of VD554 is 18V
Normal Check to see if, 9v, 5v is normal
Normal Check N101 etc
Test to see all terminal Resistance of load Is normal
Abnormal Normal Check the control Voltage of V552 or CPU power
Abnormal The failure of Horizontal unit or N551 or N552
Abnormal
Check switch of Power unit
Check to see if rectifying tube is normal
Normal Change rectifying tube
Abnormal Check the Loader
21
PRE GND
R803 56K
R804 82
XS802-1 VIDEO
R922 100
7 R709 390K
8
R704 3.9K
R706 1.5K
R705 2.7K
9 + C701 16V47
R707 680
10 11
C703 0.01
R708 10K
R735 22K
C702 0.01
12
R722 1.5K R723 8.2K VD703 HZ4A2
13 V702 2SA
R726 270K
R725 330 +
C729 0.01
C714 16V2.2
14 +
C713 50V1
+
29
VOL-R
KEY IN
IR
AFT IN
AV1
NC
ENABLE
RESET
C601 25V10
MUTE
R109 1K
R111 82
1 C122 0.01
26
C121 FK0.022
R754 10K
24
R752 10K
R119 1K
3
C120 FK0.022 Z101 F45U
4
C119 0.01
6 B7 5V
22
BLANK
R120 J
12
R242 100
13
C732 470
14 15 R560 10K
VD504 RM11C
XS501 1 TJC2-2A 2
1
2
4
3 N501 PC817B
VD506 RM11C
T511 BCK-40-5B 3
C518 500K1000
C504 C506 1000KM1000E 1000KM1000E
+
00
RT501 ?
17 R243 270
L503 JLB1606
00
R520 1/2SJ100K
VD514 D R502 6WK1
C516 1KV4700 R525 2SJ6.8 7
C507 200V470 R522 15K
L504 Z2073 R524 2SJ27
9
C514 FK0.1
C502 250HM0.1
R511 5.6K V511 2SA
L501 JLB1606 L909 LJ0107CHA
C501 250HM0.1
1
R519 15
VD518 X
VD519 X
R523 X
VD516 D
R517 100
C554 1KV470
R526 2.2K
2
13
VD555 ES1
B2 8V
V555 2SB892 R562 2FJ1
V512 2SC3807
C407 50V1
26 27
R402 3.3K
B6 12V
+ VD402 D
+
C408 50V1
VIF IN2
VCO COIL
GND(IF)
VCO COIL
VCC (VIF) FM FIL AFT OUT DATA
CLOCK
APC FIL VIDEO OUT BLK STRETCH FIL INT VIDEO IN
VCC (V/C/D)
ABL
EXT VIDEO IN
R IN
GND (V/C/B)
G IN
SEL VIDEO OUT
B IN
BLANK IN
APC1 FIL
XTAL
VCC (RGB)
FSC OUT
R OUT
APC2 FIL
G OUT
KILL FLT
B OUT
X-RAY
AKB IN
GND (CCD/H)
V OUT
OSD CONTRAST
RAMP ALC.FIL VCC (H) H AFC FIL
H OUT
VCC (CCD) CLOCK OUT VCO IREF
FBP IN
C139 50V0.47
50
T101 ?
XP901 SCN-4Y
45
R822 1K
R201 1K
43
C204 50V1
42
R202 1.2K
R204 560K
C205 0.01
C454 50V1
C206 16V47
+
L451 18UH
B4 24V
41
R452 1
R454 3K
C459 100FK0.1
R451 5.6K
R453 12K
R457 39K
37
G201 S3.58
R268 1K 36 35
C274 0.01
VD412 HZ7C1
R412 8.2K
+ C412 50V1
R414 10K
R415 3.9K
C441 200FK0.39 +
C411 + 25V47
+ C276 16V10
28
R459 1SJ1
XP402 TJC2-5Y
R461A 1/2DJ120 + B6 C450 16V100 12V
L441 2069
XS401 SCN-4Y
C444 160V4.7
3 2 H-PULSE
B4 24V
R274 4.7K
T471
R491 1FJ2.2
9
B3 190V
HV
4
R435 2W150
FO
30 29
L442
2
+ C457 25V2200
R446 220K
VD411 EU01
R275 3K
32 31
R442 R206 47K R205 22K
34 33
R207 2M
C207 C208 FK0.01 50V0.47
R442 1/2SJ1K
3
C458 100FK0.033
1
+ C456 25V2.2 R458 1K
C453 1000R455 12K
38 C209 J
XS402 TJC2-5A 4
R460 1/2DJ180
VD452 1Z75 R456 12K
+ C452 25V1000
C210 16V0.47
C279 0.01
R279 3K
R273 4.7K-J
R413 10K
R434 2W120
B6 12V
R409 680
C431 X R408 2.2K
K6D
C455 500FK10 C451 35V100
40 39
4
C203 16V4.7 R270 J
+
3
2
N451 LA78040
+ C137 50V0.47
44
1
R821 4.7K
47 46
VD933 D FO
C821 50V1
48
+
C934 50V0.47
V821 2SC
R127 390
C140 470
49
C933 16V470
+ C931 16V10
1
VD434 EU01
+ C434 35V47 T431 HB-6-11
B4 24V C472 35V100
V432 2SD1651
R432 J V431 2SC2383-O
R433 1/2SJ1K C433 500KK3900
C432 500KK1000
R472 VD472 1FJ1 EU01
1 R474 1FJ1
2
VD474 + EU01
8
L433 Z2073 C436 3KV470 L432 YC0008
SCREEN
10 +
B1 110V
C474 250V22 (1) 2SC: 2SC536-E/F/G; 2SC1815-O/Y/GR;
R471 6W3.9
(2) 2SA: 2SA608-E/F; 2SA1015-O/Y/GR; (3) D: 1S1555; 1N4148; 1S2473; 1S2076; D5442;
C435 1500MJ8200
TP-G TEST
TP-H TEST
R233 1/2DJ1.5K
(4) 0.01:CT1-08B-2F4-63V-0.01uF-Z; (5) KK470: CT1-06B-2B4-63V-470uF-K
ABL
C231 50NP1
R232 10K
(6) FKXXX: CL11-63V-XXXuF-K (7) 200NJXXX: CBB22-200V-XXXuF-J
R403 330K
(8) 1500MJXXX: CBB12-1600V-XXXuF-J
3
2
1
+ C572 10V470
1
7
C939 2KV1000
2 B6 12V
C810 16V2.2
L431 YC0008
R404 820 VD401 D
N552 AN7805
25 C405 0.01
C406 FK0.068
1
2
VD553 D
3
RL551 RL
C404 16V220
R585 2.2K
N551 AN7812
24
C403 FK0.47 +
V581 2SC
VD580 HZ6C3
1
C533 400KM2200S
2
C570 10V470
R401 2.2K
C402 FK0.22 R400 1/2DJ270
+
R565 1.2K
N553 AN7805
B5 5V
R531 1/2CK5.6M
LIVE AREA
R584 68K
R564
+ C565 25V1000
C515 FJ0.01
R581 10K
R583 C581 560K 50V0.47
R567 1.2K
10K
23 + C401 50V0.47
V552 2SC V554 2SB892
22
R580 22K
V580 2SA
VD561 HZ6C3
R566 10K
3
U902 EW0130KB
R569 1FJ2.2
R244 2.7K
R561 10K
R554 150K
R553 4.7K
+ C564 25V1000
R501 1/2DJ220K
FU501 T2.5A250V
V553 2SC
VD554 EU2Z 14
R515 DJ22K
AC110V 60HZ
R552
RP551 B-2K B1-ADJ
12 C532 400KM470S
21
B1 110V
1/2DJ100K
C551 2KV470
19 20
VD551 C561 R551 RU3A 160V220 2SJ47K +
8 V513 2SC4460
18 C245 0.01
+ C244 16V47
R555 1/2DJ47K
11 VD517 ES1
V551 2SC
R556 22K 10
+
VD505 RM11C
16
VCO FIL
51
+
11
VIF IN1
52
U901 XXXXXXX 5
R935 39
3
1
10
C118 0.01
R730 10K R732 47K
VD503 RM11C
JG0034
8 9 10
R940 33
V932 2SC
4
R121 1K
3
C117 50V1 R114 100K R241 100
C503 C505 1000KM1000E 1000KM1000E
W902
11
2
R737 X
9
EXT AUDIO IN
B6 12V C124 50V1
C123 1000
VCC2
R739 X
R736 4.7K
R113 100K
SIF OUT
RF AGC
C126 39
53
4
R738 4.7K
XS901 GZS10-2-102G
INPUT
R741 X
8
PIF AGC
54
GND
19
C116 0.01
C115 16V100
SIF IN
SIF APC FIL
7
R
20
7 L102 15UH
FM OUT
5
H-SYNC
R740 4.7K
K9N TJC2-1A
+
R900 DJ10K
XP902 SCN-5Y 5
6
G
R743 3.3K
AUDIO OUT
XS403 SCN-5
VCC1
V-SYNC
R742 3.3K
21
B
C932 16V10
PUMP OUT
POWER
R729 150K
VD733 D
5
+
18
N701 LC863432A-XXX
CVBS
R721 10K V704 2SC
2
23
FILTER
R926 680
V931 2SA
R933 1.5K N101 LA76814
27
25
C610 FK0.015
OUTPUT
17
V703 2SC
V705 2SC
R110 220
V102 2SC2216 C112 0.01
A701 HS0038
R766 100
28
AV2
SVIDEO
R108 5.6K
30
NON INPUT
16
R731 10K
R734 10K
VDD
31
38M 15
R720 10K R728 470
VOL-L
R928 1/2SJ2.7K
VD921 D
C921 CJ390 R931 1K R932 15K
+
R724 4.7K
WOOFER
XTL2
C602 25V2.2
+
G701 32K
C704 15P
R612 3.3K
C923 CJ56R
+
6
C705 18P
R747 22K
SW707 TV/AV
B6 12V
R107 100
VD451 EM01Z
R746 22K
SW706 MENU
C111 0.01
32
+
R703 4.7K
R702 8.2K
XTL1
33
+
R701 27K
DEGAUSS
R924 330
+
5
SDA
SW705 V-
L701 39UH
R700 150K
NC
GND
+
+
5 R744 220 R745 220
+
4
SCL
7 6
SCL
AT24C04 SW703 SW704 CHV+
4
C110 0.01
+
8
VCC GND
3
C603 25V2.2 R611 3.3K
34
R927 2SJ10K
V922 2SC2688
+
1
35
+
3
2
SW701 SW702 POWER CH+
2
N702
C720 0.01
+
+
VD911 D R916 680
CJ390 +
R104 100K
AGC
C719 16V47
R917 2SJ10K
R918 1/2SJ2.7K
C913 CJ56R
R914 330
C911
C801 16V10
8
7
NC
R601 10K
C802 16V10
R908 1/2SJ2.7K
V912 2SC2688
R802 100
N103 LA4525
OUT1
NC
SDA
C604 25V2.2
1
NC
36
6
NC
R912 100
XS801-1 AUDIO
+
ENABLE
IN1
1
Vcc
R105 1K
5
NC
C607 16V100
IN2
C103 16V2.2
B5 5V
BTL IN
VD601 + D
SDA
V602 2SC
2
R603 10K V601 2SA
R602 10K
OUT2
R102 100
GND
R101 100
VD901 D R906 560
C901 CJ390
R832 1K
C809 2200 3
5V
SCL
B6 12V
4
C102 0.01
C101 + 16V100
R103 33K
R801 22K
R907 2SJ10K
V902 2SC2688
C903 CJ56R
R904 330
C605 16V470
+
5V B7 5V
+
C708 50V4.7
C606 16V470
V603 2SC
+ C608 16V100
33V
+
C611 0.01
+
N706 UPC574
CRT BOARD R902 100
+ C612 16V470
R604 4.7K
IF
R718 2SJ10K B1 110V
B901 3W16OHM
XP601 SCN3-2Y
XS601 TJC3-2A B2 8V
A101 TDC-XXX
(LA76814+LC863248A)
B7 5V
HR76814.SCH Title NTSC-M Size
Document Number
Rev 1
HR76814 Date:
Thursday, November 28, 2002
Sheet
1
of
1
CIRCUIT BLOCK DIAGRAM
23
PCB
24
CIRCUIT EXPLANATION IC reference data: 1). N701 (LC86F3248A) Pin No. 1
Function
Voltage (V)
n.c
Pin No. 22
R-input
Voltage (V) 0.06
Function
2
Connect to 5V resistor via a
5.03
23
G-input
0.06
3
Connect to 5V resistor via a
5.03
24
B-input
0.07
4
Connect to 5V resistor via a
5.04
25
Blank
0.15
5
Connect to 5V via a
5.03
26
n.c.
0.01
6
Connect to 5V resistor via a
5.03
27
I2C bus control 0
4.85
7
Standby
0.03
28
I2C bus control 0
4.79
8
n.c.
0
29
I2C bus control 1
5
9
Ground
0
30
I2C bus control 1
4.99
10
Scl
1.47
31
Connect to 5V resistor via a
5.03
11
sdl
2.2
32
Connect to 5V via a resistor
5.04
12
Power supply
4.99
33
13
Key input
0.24
34
14
AFT in
2.77
35
15
AGC in
1.7
36
Connect to 5V resistor via a Infrared receive Connect to 5V resistor via a
5.03 0.03 5.02
16
n.c.
1.7
37
Connect to 5V resistor via a Mute
17
Reset
4.99
38
AV select
18
Filter
3.13
39
19
CVBS in
3.25
40
20
V sync input
4.8
41
C resistor
5.01
21
H sync input
4.12
42
Connect to 5V resistor via a
5.02
Connect to 5V resistor via a Connect to 5V via a resist
5.01 0.11 0.02 5.02 5.01
25
2). N101 LA76814K Pin No. 1
Audio output
Voltage (V) 2.23
Pin No. 28
FBT input
Voltage (V) 1.06
2
FM output
2.23
29
Interference
1.69
3
IF AGC filter
2.22
30
Clock output
0.002
4
RF AGC
2.59
31
n.c.
0.002
5
PIF AMP input
1.30
32
OSD gain control
3.05
6
PIF AMP input
2.83
33
Gnd
0
7
IF ground
2.83
34
X-ray protect
0.06
8
IF VVcc
0
35
ACC killer filter
0.39
9
FM filter
4.94
36
Chroma AFC-F
3.49
10
AFT output
1.90
37
CW:3.58 MHz out
0.54
11
Bus data
2.77
38
XTAL
2.87
12
Bus clock
4.85
39
Chrome ACC filter
3.2
13
ABL
4.76
40
Selected video output
2.43
14
R-input
3.92
41
Video chroma deflection
0
15
G-input
0.14
42
Ext video input
2.55
16
B-input
0.15
43
Power
5
17
Fast blanking input
0.08
44
Int. video input
2.77
18
RGB Vcc
7.94
45
Black stretch filter
2.6
19
R-output
2.21
46
Video input
2.12
20
G-output
2.36
47
APC filter
3.5
21
B-output
2.28
48
VCO coil
4.3
22
H-synchronize output
0
49
VCO coil
4.3
23
Vertical output
2.47
50
FLL filter
2.24
24
Vertical ramp ALC filter
2.65
51
Ext audio input
2.12
25
Power
5.10
52
SIF output
1.95
26
AFC filter
2.49
53
APC filter
2.38
27
Horizontal output
0.63
54
SIF input
3.14
Function
Function
26
ADJUSTMENT IF Alignment: Test equipment: a. 45.75MHz sweep generator b. 15V/3A DC power supply (with short and over current proof) c. Digital multi-meter d. Alignment tool f. User Remote controller g. Service remote controller h. Video signal generator i. Multi-system adjustment tool j. 60MHz double trace oscillograph (2 units) k. White balance adjustment instrument Signal, Power Supply Connection: a. Connect a +15V DC power supply to the +15V, testing top in the main PCB. b. Input sweep signal into IF testing top c. Connect multi-meter to PIF-TP testing top in PCB. Alignment a. Connect 45.75MHz sweep generator to IF test top in PCB. b. Adjust T101 and make digital multi-meter display 3.6V±0.05V. (PIF-TP top can only connect to multi-meter). Alignment and check: a. Connect main PCB with alignment tool, input factory adjustment signal, and turn TV on. Adjust screen control on FBT and make screen brightness relevant, receive 525-line monoscope, adjust focus control on FBT and make focus relevant. b. Pre-adjust power voltage: adjust RP551 and make +B voltage be 109V±0.5V. c. Check brightness, contrast, color, and sharpness: receive color bar signal and adjust contrast, brightness, color, sharpness control, picture will change accordingly. Main power adjustment: Adjustment: Connect a voltage meter to +B on main PCB. Ensure the +B voltage is 109V±0.3V
27
INFORMATION OF RESISTORS AND CAPACITORS CAPACITORS RESISTORS & CAPACITORS-PARTS NO. CODE Notes: 1. Part numbers are indicated on most mechanical parts. Please use this part number for parts orders. 2.The unit of resistance is Ω (ohm). K=1000Ω, M=1000KΩ 3.The unit of capacitance is µF (microfarad). 1pF=10-6µF. Numbering system of Capacitor Example CL42 ----- 17 ---- 50V ---- 2F4 ---- 104 *-- Z Type
Voltage
Value (pF)
CL21X ---- 100V ---- 223 * ---Type
Voltage
Voltage
J
Value (pF) Tolerance
CL110X ---- 25V ---- 100µF Type
Tolerance
± 20%
Value
Tolerance
* 104 =10×104 223=22×103 Numbering system of resistor Example RY17S ---- 2W ---- 390 ----
J ---- 05-E-A
Type
Tolerance
Wattage
Value(Ω)
RS11 ---- 1/2W ---- 1.8K ---Type
Wattage
Value
K
Tolerance
28
ABBREVIATION OF PART NAME AND DESCRIPTION
T
PART NAME & DESCRIPTION TYPE ALLOWANCE Carbon F ±1%
S
Solid
J
±5%
J
Metal
K
±10%
Y
Oxide
M
±20%
F
Fuse
G
±2%
CAPACITORS
C
PART NAME & DESCRIPTION TYPE ALLOWANCE Ceramic J ±5%
T
Ceramic
K
±10%
L
Film
L
±15%
D A
Electrolytic Tantalum
M P Z
±20% +100%-0% +80%-0%
RESISTORS
29
TERMINAL VIEW OF TRANSISTORS
30
