Sony HCD-EC55 Service Manual page 82

HCD-EC55/EC77/GX99
Ver. 1.2
Q Q
PRINTED WIRING BOARD — PANEL BOARD —
3 7 6 3 1 5 1 5 0
1
A
B
C
D
T E
L 1 3 9 4 2 2 9 6 5 1 3
E
KEY-RIGHT
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SUPPLEMENT-1
Page 8
F
G
w w w
H
HCD-EC55/EC77/GX99
• :Uses unleaded solder.
2 3
PANEL BOARD
Q301
E
R328
R327
LED301
R326
(BACK LIGHT)
R325
R310
R313
C317
R308
R306
JW378
JW362 C314
C315
JW392
C316
JW350
FUNCTION
JW358
SW303
JW308
JR315 JR308
JW314
SW313
TUNING +
M L
E E E E
H Q317 Q318
Q316
Q315 JW352
BOARD
E E E E
R362
CN403 Q311 Q312 Q314
Q313
R364
(
JW310
JW324
JW377
JW343
CD MECHANISM
DECK
C312
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4 5
W304
LCD301 (LIQUID CRYSTAL DISPLAY)
R382
JW355
JW307
X302
C342
R402
C313
R380
3
R302
R401
R301
R303
C340
R304
R389
JR301
US,CND R388
C321
R392
JW369
C330
R420
R396 JW393 JR311
JW379
C332
JW394 R314
JR310 JW367
TUNER/BAND
R323 JW357
SW305
CD u
C327
R312
SW304
R405
Q Q
3 7
R412
SW312
SW311
TUNING –
l m
x
C307 Q302
Q303
E
E
C305
R331
R332
JW386
R333
R329
C306
D301
C303
C302
JW383
JW356 Q304 E
Q309
R375
D303
R373
Q307
E E
R371
C310 R338
R369
Q310
E
Q305 R339
Q308 R343
E
Q306 E
R345 R344
R340
S301
R421
C308
R341
VOLUME
1-872-055-
W305
G
KEY-CD
BOARD
W402
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SUPPLEMENT-1
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Page 8
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8 9 9
6 7 8
F
KEY-LEFT
BOARD
CN401
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SUPPLEMENT-1
Page 8
JW316
JW361
R381
IC302
JR317
1
JW354
JR319
JW305
JW389
R324
JW368
6 3 1 5 1 5 0 8 9
CN301
I
MAIN BOARD
CN607
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SUPPLEMENT-1
Page 3
JW334
JW363
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• Semiconductor
Location
Ref. No. Location
D301 E-5
D302 F-4
D303 E-4
D304 C-5
D305 E-5
LED301 B-2
IC301 B-4
IC302 B-6
Q301 B-2
Q302 D-5
Q303 D-5
Q304 E-5
Q305 E-5
Q306 F-4
Q307 E-5
Q308 F-5
Q309 E-5
Q310 E-5
Q311 E-2
Q312 E-3
Q313 E-3
Q314 E-3
2 4 9 8 2 9 9
Q315 E-2
Q316 E-3
Q317 E-3
Q318 E-3