Read Sony HCD-EC68P / HCD-EC78P / MHC-EC68PI / MHC-EC78PI Service Manual online
HCD-EC68P/EC78P
HCD-EC68P/EC78P
36
36
1
100
30
31
81
80
50
51
B E
B E
B E
B E
B E
B E
B E
B
E
B E
B
E
B E
B
E
B
E
B
E
B
E
B
E
R400
R401
R402
R405
R406
R412
R413
R448
R414
R415
R416
R417
R418
R419
R420
R421
R422
R426
R428
R446
R433
R447
Q301
Q303
Q304
Q305
Q306
Q307
Q308
Q310
Q311
Q312
Q313
Q314
Q315
Q316
Q317
Q318
FB301
R301 R302
R303
R304
R305
R306
R307
R308
R311
R309
R310
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
C301
R340
C304
C351
R341
R342
R343
R344
C308
R345
R346
R347
R348
R349
C310
C311
C312
C313
R350
C314
R351
C315
R352
C316
R353
C317
R354
R355
C319
R356
R357
R358
R359
R359
C320
C321
C348
C347
R360
R361
R362
R363
R364
C328
R365
R366
R367
R368
R369
C330
C332
R370
R371
R372
R373
R374
C338
R375
R376
R445
R441
R443
D306
R442
R377
R378
R444
R379
C340
C341
C342
R380
SW303 - 305,
SW311 - 319
SW311 - 319
C344
R381
C345
C353
CN311
R382
C346
R383
R384
R385
R386
R387
R389
C354
R390
C355
R391
C356
R392
R396
D301
D302
D303
D304
D305
D307
JR301
JR302
JR303
JR304
JR305
JR307
R434
R429
R435
JR308
JR309
JR310
JR311
JR313
JR315
SCR1
B
E
E
B
1
37
11
2
31
30
1
2
12
13
2
4
1
5
1
9
3
2
1
11
2
1
2
JW370
JW371
JW372
JW373
JW374
JW375
JW376
JW377
JW378
JW379
JW380
JW381
JW382
JW383
JW384
JW385
JW386
JW387
JW388
JW389
JW390
JW391
JW392
JW393
JW394
JW395
JW396
JW398
JW397
JW399
JW400
JW401
JW402
JW403
JW404
JW405
JW406
Q302
Q309
LED301
SW303
SW303
SW304
SW305
TUNING +
W301
3
1
SW311
SW312
SW313
SW314
SW315
SW316
SW317
SW318
SW319
CN301
CN302
CN303
CN306
C302
C303
C305
C306
C309
C357
C352
X301
X302
S301
C343
JW301
JW302
JW303
JW304
JW305
JW306
JW307
JW308
JW309
JW310
JW311
JW312
JW313
JW314
JW315
JW316
JW317
JW318
JW319
JW320
JW321
JW322
JW323
JW324
JW325
JW326
JW328
JW329
JW330
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW339
JW340
JW341
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW351
JW352
JW353
JW354
JW355
JW356
JW357
JW358
JW359
JW360
JW361
JW362
JW363
JW364
JW365
JW366
JW367
JW368
JW369
PANEL BOARD
IC301
IC303
IC302
+
–
DSGX
.-
PLAY MODE/
TUNING MODE
FUNCTION
VOLUME
ROTARY
ENCODER
ENCODER
DISPLAY
EQ
-TUNING
/
CD
SW311
(EC68P/EC78P:US,CND)
(EC78P:UK)
(EC68P/EC78P:US,CND)
LCD301
LIQDID CRYSTAL DISPLAY
9
(EC78P)
(EC68P:AUS/EC78P:UK)
Y
.-
L
MAIN
BOARD
CN803
B
KEY
POWER
BOARD
W401
STANDBY
1-875-490-
14
(14)
A
KEY CD
BOARD
Q
MOTOR
BOARD
CN001
CD MECHANISM
DECK
A
B
C
D
E
F
G
1
2
3
4
5
6
(CHASSIS)
(EC68P/EC78P:US,CND)
(Page 39)
(Page 30)
(Page 38)
Ref. No. Location
• Semiconductor
Location
D301
D-4
D302
D-2
D303
D-3
D304
C-4
D305
E-5
D306
E-2
D307
E-3
IC301
B-3
IC302
A-5
IC303
E-2
LED301 A-1
Q301
B-1
Q302
D-4
Q303
D-4
Q304
D-3
Q305
D-2
Q306
D-2
Q307
E-5
Q308
E-5
Q309
E-5
Q310
E-5
Q311
F-5
Q312
F-5
Q313
F-4
Q314
F-4
Q315
F-5
Q316
F-4
Q317
F-4
Q318
F-4
6-13. PRINTED WIRING BOARD - PANEL Board -
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
(Page 38)
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