Read Panasonic WJ-MS488 Service Manual Supplement online
Quad Unit
WJ-MS488
ORDER NO. AVS9912220S8
Please file and use this supplement service manual together with the service manual for Model No. WJ-MS488
Order No.AVS9811141C8
■
Sub Board
Sub Board has been deleted and its circuit has been included into the Main Board to improve productivity.
WJ-MS488
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICEING TO QUALIFIED SERVICE
PERSONNEL.
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICEING TO QUALIFIED SERVICE
PERSONNEL.
This symbol warns the user that uninsuland voltage
within the unit may have sufficient magnitude to cause
electric shock. Therefore, it is dangerous to make any kind of
contact with any inside part of this unit.
within the unit may have sufficient magnitude to cause
electric shock. Therefore, it is dangerous to make any kind of
contact with any inside part of this unit.
This symbol alerts the user that impotant literature concerning
the operation and maintenance of this has been included.
Therefore, it should be read carefully in order to avoid
any problems.
the operation and maintenance of this has been included.
Therefore, it should be read carefully in order to avoid
any problems.
T
here are special components used in this equipment which are important for safety. These parts are indicated
by the mark on the schematic diagram and the replacement parts list. It is essential that these critical
parts should be replaced with manufacturer's specified parts to prevent X-radiation, shock, fire, or other hazards.
Do not modify the original design without permission of manufacture.
IMPORTANT SAFETY NOTICE
This service information is designed for experienced repair technicians only and is not designed for use by the
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.
!
WARNING
CONTENTS
SCHEMATIC DIAGRAM
MAIN BOARD (1/4)
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
1
MAIN BOARD (2/4)
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
2
MAIN BOARD (3/4)
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
3
MAIN BOARD (4/4)
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
4
CONDUCTOR VIEW
MAIN BOARD
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
5
REPLACEMENT PART LIST
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
6
SCHEMATIC DIAGRAM OF MAIN BOARD (2/4)
MAIN BOARD(2/4)
IC302
C5
IC303
B5
IC304
B4
IC305
B5
IC309
B3
IC310
A4
IC402
C3
IC403
C3
IC404
A2
IC405
A2
IC406
B1
Q301
C3
Q302
C3
Q303
C4
Q304
C4
Q305
C4
Q306
C4
Q307
C4
Q308
C4
Q309
B4
Q310
B4
Q311
B4
Q312
B4
Q313
B4
Q314
B4
Q315
B4
Q316
B4
Q317
B4
Q318
B4
Q319
B4
Q320
B4
Q321
B4
Q322
B4
Q323
B4
Q324
B4
Q325
A4
Q326
B4
Q401
C1
Q402
C1
Q403
C1
Q404
C2
Q405
C2
Q406
C2
Q407
C2
Q408
C2
Q409
B2
Q410
B2
Q411
B2
Q412
B2
Q413
B2
Q414
B2
Q415
B2
Q416
B2
Q417
B2
Q418
B2
Q419
B2
Q420
B2
Q421
B2
Q422
B2
Q423
B2
Q424
B2
Q425
A2
Note: The value indicated in the schematic diagram should be read as follows:
Multiplier (0 – 5)
2nd Significant Digit (0 – 9)
1st Significant Digit (0 – 9)
<Example>
For Resistor:
330
➔
33 x 10
0
= 33
Ω
561
➔
56 x 10
1
=560
Ω
123
➔
12 x 10
3
=12k
Ω
0R00=0
Ω
For Capacitor
(Except Electrolytic Capacitor and Tantalum Capacitor):
(Except Electrolytic Capacitor and Tantalum Capacitor):
820
➔
82 x 10
0
= 82PF
102
➔
10 x 10
2
= 1,000PF = 0.001
µ
F
104
➔
10 x 10
4
= 100,000PF = 0.1
µ
F
For Coil:
330
➔
33 x 10
0
= 33
µ
F
561
➔
56 x 10
1
=560
µ
F
8R2=8.2
µ
F
R423 0R00
R425 0R00
R424
331
C417
104
C414 104
C416 104
C415
OPEN
TP401 OPEN
L401
8R2
-
+
C401
1000/6
Q401
R401
222
R402
102
R403
222
Q402
C402 101
L402
560
L403
820
C403
*
C404 101
C405
470
V5A
Q403
R407
221
R409
101
R406
472
C406
750
3
VR401
102
R41
1
302
R412
101
R410 332
Q404
-
+
C407
C408
104
R414
472
R415
472
R416
272
R417
332
R413
332
R404
102
R405
102
Q405
C409
105
Q406
Q407
-
+
C410
100/6.3
R420
102
R421
222
R418
102
C411
OPEN
Q408
V5A4
100/6.3
C428 104
Q411
R436 101
R435
102
R437 103
C424 101
R432
OPEN
OPEN
R434
821
C422
333
Q410
-
+
C423
C421
104
3
VR402
OPEN
R429
432
R430
102
R433
102
Q409
R428 102
R427
621
L405
*
C420 361
C419
*
L404
560
R426
621
Q413
R443
472
Q415
Q414
R446 272
R445
102
R444
271
C434
102
R442
820
R441
151
C433
103
C435
104
C436
104
C437
104
L407
8R2
8R2
+
-
C432
100/6.3
V-5
1
2
3
4
2
3
4
8
7
6
5
7
6
5
COM
INH
VEE
GND
INH
VEE
GND
ADR
CH1
CH0
VDD
IC404
Q417
R451
102
R452
101
Q418
C438
104
R447
103
C439
563
563
C440
560
R448
222
R449
102
Q416
R450
102
C441
474
R453 563
R454
104
Q419
R456 332
R457
331
R455
331
R458
272
R459
102
3
VR404
103
R461
182
R462
132
R463
331
C442
104
Q420
R464
R465
102
C443
Q421
R467
272
C444
221
C445
104
Q422
R468
222
C446
104
3
VR403
102
R469
363
R470
103
R471
182
R472
51
1
R473
361
Q423
C447
560
R474
222
Q424
C448
105
R475
275
R477
C450
OPEN
1
2
IC405
(1/7)
3
4
IC405
(2/7)
C449
104
R478
105
V-5D
100/6.3
C430 102
C451
105
C452
331
R479
101
R480
154
R481
222
R482
223
Q425
C453 102
9
8
IC405
(4/7)
11
10
IC405
(5/7)
5
6
IC405
(3/7)
14
7
IC405
(7/7)
C455 104
WSYNCD
GLBSD
CP2-4
13
12
IC405
(6/7)
1
/OE
2
DVSS
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
DVDD
12
CLK
13 DVDD
14 AVDD
15 AVDD
16 VRTS
17 VRT
18 AVDD
19 VIN
20 AVSS
21 AVSS
22 VRBS
23 VRB
24 DVSS
IC302
C318
104
R323
0R00
R325 0R00
R324
331
C317
104
C314 104
C316
104
C315
OPEN
TP301 OPEN
L301
8R2
8R2
-
+
C301
1000/6
Q301
R301
222
R302
102
R303 222
Q302
C302
101
L302
560
L303
820
C303
*
C304
101
C305
470
V5A
Q303
R307
221
R309
101
R306
472
C306
750
3
VR301
102
R31
1
302
R312
101
R310 332
Q304
-
+
C307
C308
104
R314
472
R315
472
R316
272
R317
332
R313
332
R304
102
R305
102
Q305
C309
105
Q306
Q307
-
+
C310
100/6.3
R320
102
R321
222
R318
102
C311
OPEN
Q308
V5A3
100/6.3
C328 104
Q311
R336
101
R335
102
R337
103
C324 101
R332
OPEN
R334
821
C322
333
Q310
-
+
C323
C321
104
3
VR302
OPEN
R329
432
R330
102
R333
102
Q309
R328 102
R327 621
L305
*
C320 361
C319
*
L304
560
R326
621
Q313
R343
472
Q315
Q314
R346
272
R345
102
R344
271
C334
102
R342
820
R341
151
C333
103
C335
104
C336
104
C337
104
L307
8R2
+
-
C332
100/6.3
V-5
1
2
3
4
2
3
4
8
7
6
5
7
6
5
COM
INH
VEE
VEE
GND
ADR
CH1
CH0
VDD
IC304
Q317
R351
102
R352
101
Q318
C338
104
R347
103
C339
563
563
C340
560
R348
222
R349
102
Q316
R350
102
C341
474
R353 563
R354
104
Q319
R356
332
R357
331
R355
331
R358
272
R359
102
3
VR304
103
R361
182
R362
132
R363
331
C342
104
Q320
R364
R365
102
C343
Q321
R367
272
C344
221
C345
104
Q322
R368
222
C346
104
3
VR303
102
R369
363
R370
103
R371
182
R372
51
1
R373
361
Q323
C347
560
R374
222
Q324
C348
105
R375
275
R377
C350
OPEN
1
2
IC305
(1/7)
3
4
IC305
(2/7)
C349 104
R378
105
V-5C
100/6.3
C330
102
C351
105
R379
101
Q325
GLBSC
CP2-3
ADCK3
CY0
C352
331
R380
154
R381
222
R382
223
C353
102
9
8
IC305
(4/7)
11
10
IC305
(5/7)
14
7
IC305
(7/7)
C355 104
WSYNCC
VPIN3
VPIN4
5
6
IC305
(3/7)
1
/OE
2
DVSS
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
DVDD
12
CLK
13 DVDD
14 AVDD
15 AVDD
16 VRTS
17 VRT
18 AVDD
19 VIN
20 AVSS
21 AVSS
22 VRBS
23 VRB
24 DVSS
IC402
C418
104
ADCK4
DY0
CY1
CY2
CY3
CY4
CY5
CY6
CY7
DY1
DY2
DY3
DY4
DY5
DY6
DY7
13
12
IC305
(6/7)
222
OPEN
105
105
222
OPEN
V-5D
1 C
2 Q0
3 D0
4 D1
5 Q1
6 D2
7 Q2
8 GND
9
CK
10
Q3
11
D3
12
Q4
13
D4
14
D5
15
Q5
16
VCC
PIN0
SL3A
PIN1
PIN2
SL3B
SL3C
104
PIN4
PIN5
PIN6
WY6
9 C
10 B
11 A
12 3
13 0
14 1
15 2
16 VCC
1
4
2
6
3
COM
4
7
5
5
6
INH
7
VEE
8
GND
CH4
CH3
CH2
CH1
SL4C
SL4B
SL4A
SL4B
SL4A
104
CH5
CH7
CH6
CH8
CH8
104
YC4
9 C
10 B
11 A
12 3
13 0
14 1
15 2
16 VCC
1
4
2
6
3
COM
4
7
5
5
6
INH
7
VEE
8
GND
CH4
CH3
CH2
CH1
SL3C
SL3B
SL3A
SL3B
SL3A
104
CH5
CH7
CH6
CH8
CH8
104
YC3
SL4C
SL4B
SL4A
PIN 0—2,4—6
IC309
C362
C363
IC310
C364
IC406
C457
C458
CH 1—8
R389
221
R489
221
Q412
C456
221
221
R483
273
Q312
C356
221
R383
273
C382 104
C383
104
C482
104
C483
104
R438
OPEN
R338
OPEN
BWLD
DY0—DY7
DC0—DC7
ADCK4,CP2-4 VPIN4
GLBS4
GLBS3
BWLC
ADCK3,CP2-3 VPIN3
CY0—CY7
CC0—CC7
1
/OE
2
DVSS
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
DVDD
12
CLK
13 DVDD
14 AVDD
15 AVDD
16 VRTS
17 VRT
18 AVDD
19 VIN
20 AVSS
21 AVSS
22 VRBS
23 VRB
24 DVSS
IC303
C329
104
ADCK3
CC7
CC6
CC5
CC4
CC3
CC2
CC1
CC0
CC6
CC5
CC4
CC3
CC2
CC1
CC0
R339
0R00
0R00
Q326
C325
OPEN
TP302
OPEN
OPEN
C327
104
C326
104
R340 0R00
R390
332
R319
101
R419
101
1
/OE
2
DVSS
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
DVDD
12
CLK
13 DVDD
14 AVDD
15 AVDD
16 VRTS
17 VRT
18 AVDD
19 VIN
20 AVSS
21 AVSS
22 VRBS
23 VRB
24 DVSS
IC403
C429
104
ADCK4
DC7
DC6
DC5
DC4
DC3
DC2
DC1
DC0
DC6
DC5
DC4
DC3
DC2
DC1
DC0
R439
0R00
Q426
C425
OPEN
TP402
OPEN
C427
104
C426 104
R440
0R00
R490
332
TO MAIN BOARD(1/4)
TO MAIN BOARD(1/4)
TO MAIN
BOARD(1/4)
BOARD(1/4)
TO MAIN
BOARD(4/4)
BOARD(4/4)
MAIN BOARD(2/4)
400 SERIES
300 SERIES
COMMON FOR
300/400 SERIES
300/400 SERIES
C403
C419
C419
L405
240
360
360
5R6
160
240
240
3R9
NTSC
PAL
C303
C319
C319
L305
240
360
360
5R6
160
240
240
3R9
NTSC
PAL
VR401
Y LEVEL-4
Y LEVEL-4
VR404
C GAIN-4
C GAIN-4
VR403
C PHASE-4
C PHASE-4
VR301
Y LEVEL-3
Y LEVEL-3
VR304
C GAIN-3
C GAIN-3
VR303
C PHASE-3
C PHASE-3
1
2
3
4
5
C
B
A
– 2 –
