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HCD-GSX75
32
32
7-7. Printed Wiring Board – MAIN Section – • See page 22 for Circuit Boards Location.
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
D301
D-7
D302
B-6
D303
C-13
D304
C-13
D306
E-5
D308
D-12
D310
D-13
D311
D-13
D714
E-2
D715
E-2
D721
D-1
D722
D-1
D723
E-1
D724
E-1
D725
D-2
D726
D-2
D727
D-4
D728
D-4
D801
E-7
D802
E-8
D803
E-7
D804
F-9
D806
F-7
D807
F-7
D907
E-3
D931
F-4
D932
F-4
D933
F-5
D934
F-5
D939
E-3
D941
G-4
D942
G-3
IC301
B-8
IC305
G-4
IC309
E-13
IC401
G-8
IC481
B-4
IC801
E-9
IC802
E-8
IC803
F-6
IC931
E-5
IC932
E-4
IC933
E-3
Q101
B-6
Q201
C-7
Q303
B-10
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
Q304
B-6
Q306
E-6
Q307
B-10
Q308
E-6
Q309
E-6
Q310
E-6
Q311
G-4
Q312
G-5
Q316
D-12
Q317
F-13
Q402
G-9
Q404
G-9
Q406
G-9
Q408
G-9
Q441
C-3
Q442
C-3
Q461
B-2
Q462
C-3
Q481
B-2
Q482
C-1
Q483
C-1
Q484
C-2
Q485
C-1
Q801
D-11
Q802
D-11
Q803
F-10
Q804
G-3
Q805
D-11
Q806
D-11
Q931
E-3
Q934
G-4
JR201
JR
101
C207
R102
C108
C303
Q201
R101
JR510
R303
R202
C208
R201
R496
C487
C449
R453
R470
IC481
R463
R461
R484
R482
R
442
R446
C461
C450
R468
R465
R481
R464
R469
R448
R472
R447
Q804
Q484
E
R451
R467
R452
R462
R454
C441
R443
R483
R486
R117
R335
C813
C222
C313
R301
R
409
Q408
C814
R815
C807
C373
R
827
C803
R822
C377
Q308
R415
R416
E
E
E
E
Q402
Q404
R
828
R406
R402
R852
C470
R830
1
3
R441
R851
C302
R203
R302
R444
R223
R123
C933
R322
R933
R809
C955
C808
R935
R934
Q310
R810
C311
C316
R103
R104
C806
Q803
R205
R204
R498
R338
C932
C810
R936
R
826
C371
R495
R490
C489
R334
R319
R493
R217
R320
R309
R321
R318
R937
R494
R105
R818
C107
R340
Q101
R352
R333
Q483
R
311
C956
R207
R108
R107
R356
Q806
C490
R492
R497
Q805
R487
R466
R485
R488
R489
R305
R819
R491
JR505
IC802
R325
R
312
R
326
R351
R324
R
313
JR311
R310
IC305
R403
C375
R801
R825
R837
R835
R823
R836
R834
R802
R820
C401
R407
R401
R833
R413
R803
R832
R807
R805
R853
R811
R813
R814
R417
R816
R817
R812
R847
R854
C372
Q307
R840
C941
C942
Q312
Q311
R
410
R411
R
414
R821
R412
C939
R339
Q485
C802
R824
C804
R829
R843
R418
C811
R806
R804
IC801
R408
R831
Q406
C402
IC301
R314
R316
R208
R119
Q802
Q801
Q316
R839
R842
R808
R332
R304
R220
R118
R218
R121
R120
R219
C122
R445
C444
R848
C317
R471
C464
C469
R221
R844
R846
R850
R845
R838
R315
C301
JR503
JR502
JR504
C728
C732
R723
C731
R
725
R729
R724
R
728
R726
R
733
R
731
R735
R727
R
732
D726
D
715
D
724
D721
D725
D728
D
714
D723
D722
C729
D727
C733
C734
R730
R736
C727
C730
R737
R734
Q303
C309
FB302
FB301
C937
R341
R342
C943
D
310
D
311
R323
JW
348
JW
349
CP101
JW
353
JW
355
JW356
JW
352
D942
C934
JW
179
JW
222
CN305
29
C110
C109
C112
C113
C114
C310
C210
C211
C213
C214
C209
C212
T441
T461
C463
C465
C462
C467
C466
C448
JW204
C447
C443
C442
C485
C445
Q441
Q442
Q462
Q461
C468
JW210
JW
286
JW
202
JW
201
C446
C481
JW
203
C482
C483
C121
C221
JW
113
C312
JW
252
JW
114
C370
JW
119
C812
Q317
JW146
JW
200
JW
134
JW
133
JW
287
JW148
J301
JW
218
JW
289
JW
294
JW
293
JW
295
JW
297
JW
299
JW
292
JW135
RV401
JW
300
C403
JW
329
JW
246
C805
JW
302
JW313
JW
298
JW207
D302
JW258
JW
305
JW309
JW206
C102
C104
D308
JW
175
JW270
CN311
D939
JW
181
IC803
JW
216
CN301
JW142
JW
215
JW307
JW311
JW
301
JW
180
JW
254
C953
C954
D907
JW163
C315
JW
341
CN720
JW
337
JW
339
JW
338
JW
342
JW
279
JW
303
CN310
JW
277
JW
226
JW
103
JW
272
JW265
JW
217
JW
225
CN441
JW
230
JW184
JW
186
C304
JW
327
JW262
JW
223
JW193
JW194
JW198
JW
224
JW
227
Q304
JW
229
JW
232
JW
231
JW
243
JW
234
Q934
JW
328
JW
259
JW
304
C815
JW
240
JW
191
C106
JW
192
JW
149
C105
C204
JW
155
JW
176
C203
JW160
C101
C103
C308
C202
C205
JW143
C206
JW211
JW
125
JW
280
JW
130
JW
124
JW
318
JW266
JW
235
JW
241
JW
239
JW
244
JW174
JW316
JW
296
JW
290
C486
JW
122
JW
102
JW
151
Q309
C201
C369
D807
JW
242
C368
T481
JW
121
Q481
JW
126
C307
Q482
JW
253
JW199
JW
275
JW
261
C935
CNP301
JW145
JW317
JW139
C801
D
941
JW
115
JW
220
JW144
JW
271
JW
248
JW
249
JW
250
JW
236
JW
247
JW
278
JW
251
JW
343
JW
213
JW
219
JW314
JW
255
C938
JW282
JW330
JW
214
JW260
JW
127
JW
129
JW
123
JW
291
JW141
JW136
C305
D804
JW
170
JW
340
C936
JW
276
D931
X801
X802
JW
132
JW159
JW
131
JW162
JW
150
JW
156
JW
128
JW
152
IC401
R405
R404
CN306
C374
Q931
IC932
IC933
IC931
D933
D934
D932
JW312
CN309
CN307
CN308
IC309
IC309
J304
C931
JW331
JW
285
C484
C488
JW310
JW
112
D802
JW177
JW208
JW
228
JW
233
JW189
C225
C125
JW
221
D806
JW
190
JW
315
JW263
JW
245
D803
D801
JW333
D306
D301
C809
JW
320
JW322
JW284
JW332
C725
JW268
CN314
C726
C723
C738
C736
C724
JW
108
JW
172
JW168
JW171
JW
111
JW
110
JW
109
JW
344
JW188
JW187
JW183
JW
237
JW
238
JW269
JW
306
JW264
JW267
JW169
JW117
CN316
JW161
JW147
C930
C111
JW
335
JW
334
C
318
JW361
D
303
D304
R931
JW
283
JW
196
JW351
JW
345
JW
346
CP103
CP106
CP104
Q306
TUNER PACK
TAPE
MECHANISM
DECK
BLOCK
(REC-PB/ERASE HEAD)
TAPE
MECHANISM
DECK
BLOCK
(CAPSTAN MOTOR/PLUNGER)
L
AMP
BOARD
(Page 36)
H
O
K
N
DISPLAY
BOARD
(Page 38)
GAME
BOARD
(Page 38)
DISPLAY
BOARD
(Page 38)
KEY
BOARD
(Page 40)
H/P
BOARD
(Page 36)
AMP
BOARD
(Page 36)
I
G
POWER
BOARD
(Page 42)
J
LOAD SW
BOARD
(Page 30)
F
T–SENSOR
BOARD
(Page 30)
CD
BOARD
(Page 28)
L.T MOTOR
BOARD
(Page 30)
D–SENSOR(IN)
BOARD
(Page 30)
D
B
A
D–SENSOR
BOARD
(Page 30)
C
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
VIDEO IN
(MD)
VIDEO
OUT
OPTICAL
OUT(CD)
L
R
11
(11)
1-687-588-
MAIN BOARD
2
3
4
5
6
7
8
9
10
11
12
13
14
A
1
B
C
D
E
F
G
H
I