HCD-GX8000, HCD-RG77 - Sony Audio Service Manual (repair manual). Page 29

View Sony HCD-GX8000 / HCD-RG77 Service Manual online

HCD-GX8000/RG77
29
29
A
MAIN
BOARD (1/4)
CN201
1
2
3
4
5
6
RV101
E-F BALANCE
(1 TRACK JUMP)
TP
(RFDC)
TP2
(TEO)
TP
(DVC)
680
220k
33k
TP
(FEI)
TP
(RFAC)
Q101
2SB710A-RT1
AUTOMATIC
POWER CONTROL
RF AMP,
FOCUS/TRACKING
ERROR AMP
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
TP
(FEO)
DIGITAL SERVO PROCESSOR
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER,
D/A CONVERTER
Q102
2SD1664-T100-QR
+3.3V REGULATOR
DSP+5V (SW)
D-OUT
DSP-GND
L-CH
RF-GND
R-CH
RF+5V (SW)
X-RST
CD-DATA
CD-CLK
LD-ON
SQ-DATA
SQ-CLK
M-GND
M+7V (UNSW)
X-LAT
7-7.
SCHEMATIC  DIAGRAM  – BD Board –
 See page 28 for Waveforms.
 See page 48 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
(Page
34)
HCD-GX8000/RG77
30
30
MAIN BOARD (1/4)
CN202
B
0.2
3.3
IC711
SG-264
DISC TRAY
STATUS SENSOR
S711
OPTICAL PICK-UP
UP/DOWN DETECT
C712
0.1
D+3.3V
D. GND
D+3.3V
D. GND
TURN
MOTOR
DRIVER
D+3.3V
D. GND
(LOAD IN)
(LOAD OUT)
S701
DISC TRAY
OPEN/CLOSE DETECT
OPEN
CLOSE
14
(14)
14
(14)
14
(14)
C712
1
4
OPTICAL PICK-UP
UP/DOWN DETECT
CN202
B
IC711
IC701
S701
DISC TRAY
OPEN/CLOSE DETECT
M721
(TURN)
7-8.
PRINTED  WIRING  BOARDS  – DRIVER/MOTOR/SENSOR (CD) Boards –
 See page 27 for Circuit Boards Location.
7-9.
SCHEMATIC  DIAGRAM  – DRIVER/MOTOR/SENSOR (CD) Boards –
 See page 48 for IC Block Diagram.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : CD PLAY
(Page 33)
(Page 34)
HCD-GX8000/RG77
31
31
7-10. PRINTED  WIRING  BOARDS  – SW/HEAD (A)/HEAD (B) Boards –
 See page 27 for Circuit Boards Location.
PM901
(DECK A)
PM902
(DECK B)
1
4
R
CN304
IC1001
(DECK A PLAY)
IC1002
(DECK B HALF)
(DECK B REC)
NO303
NO302
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
12
S
C
HPRE901
(REC/PB/ERASE HEAD)
(DECK B)
HP901
(PB HEAD)
(DECK A)
DECK A
HALF
M901
(CAPSTAN)
M
(DECK A REC)
(DECK B PLAY)
(Page 33)
(Page 33)
(Page 33)
• Semiconductor
Location
Ref. No.
Location
D1001
B-4
D1002
B-10
IC1001
B-2
IC1002
B-10
Q1001
B-3
HCD-GX8000/RG77
32
32
C
MAIN BOARD (3/4)
CN304
[3.3]
[3.3]
[
] {2.9}
<<2.9>>
[1.5]
{
} <<
>>
(CAPSTAN)
CAPSTAN MOTOR
CONTROL SWITCH
TAPE SPEED
(NORMAL)
TAPE SPEED
(HIGH)
ROTATION
DETECT
SENSOR (DECK A)
ROTATION
DETECT
SENSOR (DECK B)
+3.3V
+3.3V
CAPM
CAPM+
CAPMH/L
ATRGM+
TRGMGND
BTRGM+
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
S1003
(DECK A HALF)
S1005
(DECK A REC)
S1006
(DECK B HALF)
S1009
(DECK B REC)
C1001
33
10V
PM902
(DECK B)
PM901
(DECK A)
+3.3V
+3.3V
7-11. SCHEMATIC  DIAGRAM  – SW Board –
• Voltages are dc with respect to ground under no-signal
conditions.
[
] : TAPE PLAY (DECK A)
{
 } : TAPE PLAY (DECK B)
〈〈
 
〉〉
: REC
: Impossible to measure
(Page 36)
HCD-GX8000/RG77
33
33
IC501
IC601
IC303
IC301
IC302
IC951
IC961
IC101
IC201
IC102
IC911
MAIN BOARD
1-683-545-
11
(11)
FOR
CHECK
1
E
3
H
PANEL
BOARD
CN601
E
E
E
E
E
E
E
E
C
B
E
1
3
3
1
3
1
3
1
3
1
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
FOR
ADJUSTMENT
21
30
31
40
1
10
11
20
E
E
E
9
1
1
1
3
8
E
E
E
E
E
E
1
3
4
6
1
10
F
GAME IN
BOARD
NO606
C
SW
BOARD
CN1001
R
HEAD (A)
BOARD
CN1
S
HEAD (B)
BOARD
CN2
(CHASSIS)
1
13
K
POWER BOARD
CN503
1
13
G
POWER BOARD
CN502
21
1
22
42
1
3
E
E
E
E
E
E
1
3
2
D
GAME IN
BOARD
NO607
VIDEO OUT
J401
L
R
1
3
M
M901
(FAN)
MD/VIDEO
(AUDIO) IN
J750
CD DIGITAL OUT
OPTICAL
IC201
A
BD BOARD
CN101
B
DRIVER BOARD
CN701
TUNER UNIT
FM
75
AM
ANTENNA
∗ 
SUPPLIED WITH
                 THE ASSEMBLED BLOCK
A
B
C
D
E
F
G
H
I
J
K
1
2
3
4
5
6
7
8
9
10
11
12
13
EXCEPT
SP
7-12. PRINTED  WIRING  BOARD  – MAIN Board –
 See page 27 for Circuit Boards Location.
(Page 31)
(Page 31)
(Page 38)
(Page 31)
(Page 42)
(Page 30)
(Page 28)
(Page 38)
(Page 40)
(Page 40)
D121
E-9
D122
E-8
D501
E-3
D502
C-5
D503
E-3
D504
C-5
D505
B-2
D508
B-2
D509
E-3
D601
C-5
D602
B-4
D603
C-5
D841
F-8
D906
J-8
D907
J-8
D908
J-8
D909
I-8
D914
J-8
D915
J-8
D916
J-8
D917
I-8
D918
J-7
D919
J-7
D920
H-8
D921
H-8
D922
H-9
D923
J-7
D924
J-7
IC101
I-8
IC102
E-10
IC201
E-12
IC301
H-5
IC302
I-5
IC303
G-5
IC501
C-3
IC601
B-4
IC911
G-7
IC951
I-7
IC961
I-8
Q101
E-8
Q103
F-10
Q151
E-8
Q153
F-10
Q201
C-7
Q202
C-8
Q203
C-9
Q204
C-9
Q205
C-9
Q206
D-7
Q207
D-7
Q251
D-7
Q301
J-6
Q302
J-6
Q303
J-5
Q304
I-5
Q305
I-4
Q306
G-4
Q307
J-6
Q310
J-6
Q389
G-4
Q390
G-6
Q391
F-4
Q392
F-4
Q393
F-4
Q394
F-3
Q395
F-4
Q396
F-4
Q397
F-3
Q398
G-6
Q399
G-5
Q504
E-5
Q505
E-5
Q601
C-5
Q812
K-4
Q861
E-4
Q862
K-4
Q891
H-11
Q892
H-11
Q911
H-7
Q912
G-7
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
HCD-GX8000/RG77
34
34
C702
C140
C210 C209
C206
C207
C203
R204
R254
C189
R285
Q201
R284
C163
C161
C162
R151
R152
C159
C168
C155
C156
C153
C158
C160
R153
R162
C164
C165
R101
C109
C108
C106
C105
C118
C103
C150
C101
C112
R105
C110
C111
R103
C119
R104
R121
C121
D121
R190
C190
R191
C157
R155
C705
Q103
Q153
R163
R165
CN702
C703
C704
R154
C175
D122
C115
C114
C116
C117
Q251
R159
R701
R751 C751 R752
R702
C701
CN202
CN783
R150
C122
R122
R166
R164
R102
C125
R116
R113
R114
R115
J750
R156
D841
R157
EPT901
Q151
Q101
R180
C180
FB701
FB751
C200
C201
FB201
CN201
C228
C226
C224
R224
R226
R228
C202
C212
C211
Q207
Q206
Q205
Q202
R208
R206
R209
R207
IC201
J401
C752
R286
C113
R109
C104
R108
C205
FB203
FB204
Q204
Q203
R158
C154
R212
R217
R219
JW704
FB210
FB219
FB218
FB217
FB216
FB214
FB213
FB212
FB211
FB215
FB208
FB220
2.2
50V
0.1
0.1
470
10V
0.1
1000 6.3V
0.022
10k
10k
0.1
22k
2SC3661
470k
10
50V
0.0068
1
50V
2.2k
10k
0.022
10
50V
10
50V
10
50V
10
50V
0.022
0.033
10k
510
0.22
0.33
2.2k
0.022
0.022
10
50V
10
50V
10
50V
10
50V
10
50V
100
16V
1
50V
10k
0.033
0.0068
10k
10
50V
47k
1k
470p
1SS355
2.2k
10
50V
2.2k
0.47
50V
1M
0.1
2SC3661
2SC3661
1k
10k
11P
0.022
0.022
47k
4.7
50V
1SS355
0.33
0.22
100
16V
0.1
2SC3661
33k
1k
1k
220p 100k
100k
220p
10P
2P
2.2k
470p
1k
10k
47k
510
4.7
50V
10k
1k
47k
10k
2P
100k
1SS355
4.7k
2SC1623
2SC1623
10k
0.068
0.1
100
10V
21P
0.01
0.0047
0.47
2.2k
330k
100k
1000
6.3V
0.001
0.022
FN1F4M
FA1A4M
2SC1623
2SC1623
10k
10k
10k
10k
TOTX141
1P
2.2
50V
22k
10
50V
33k
10 50V
1k
0.022
2SA812
2SA812
1k
10 50V
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
C1
C3
C4
C6
C7
C8
24
26
28
43
35
37
40
32
34
33
19
27
25
23
22
3
2
21
81
82
44
45
46
47
48
49
36
50
AA1
AA2
AA3
AA4
AA1
AA2
AA3
AA4
ZZ1
ZZ2
ZZ3
D.GND
D-OUT
3.3V
GM(V)-GND
GM(V)-SIG
D-0UT
R-CH
L-CH
M-GND
X-RST
X-LAT
SENS
SQ-CLK
SQ-DATA
SCOR
CD-DATA
CD-CLK
M+7V(UNSW)
PWM3
PWM2
PWM1
LD-ON
DSP-GND
RF-GND
DSP+5V(SW)
RF+5V(SW)
D.GND
TBL ADDRESS SW
BU UP/DOWN SW
MGND
M+7V
OPEN SW
CLOSE SW
D+3.3V
MTR CNT2(LOAD IN)
MTR CNT1(LOAD OUT)
ST-CLK
ST+10V
TUNED
ST-CE
STEREO
ST-L
A-GND
ST-R
ST-MUTE
ST-DOUT/MC-DIN
ST-DIN /MC-DOUT
(1/4)
MUTING
MUTING
(CHASSIS)
*
AM
ANTENNA
TUNER
UNIT
FM
75
THE ASSEMBLED
BLOCK
*SUPPLIED WITH
FEED BACK
SWITCH
FEED BACK
SWITCH
MUTING
MUTING
Q206,207
MUTING CONTROL
SWITCH
SWITCH
Q202-205
LASER DIODE ON
OPTICAL
TRANSCEIVER
R
L
(AUDIO)IN
OPTICAL
VIDEO OUT
MD/VIDEO
CD DIGITAL OUT
L201
100
µ
H
IC102
M61519FP
INPUT SELECT
SWITCH,
TONE CONTROL,
ELECTRICAL
VOLUME
7-13. SCHEMATIC  DIAGRAM  – MAIN Board (1/4) –
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
(
) : CD PLAY
(Page 39)
(Page 29)
(Page 30)
(Page 36)
(Page 37)
(Page 35)
HCD-GX8000/RG77
35
35
R814
C783
CN891
C892
Q891
R891
R893
Q892
R921
CN781
CN901
R819
R869
R892
R866
R816
R862
R864
R510
R865
R863
R861
R508
R501
JW813
JW815
C504
C861
C863
C813
M891
1k
0.1
3P
0.1
2SB1116
10k
2.2k
2SC2603
47
1W
10P
13P
680
2W
680
2W
4.7k
56
56
10k
1k
470k
100k
100k
1k
15k
68k
1
50V
47
50V
4.7
100V
4.7
100V
A1
A2
A3
A4
A5
A6
A7
A8
D
1
D
2
D
4
D
5
D7
D
8
88
87
ZZ1
ZZ2
ZZ3
78
80
FAN+
FAN-
SP PROTECT IN
FAN DET
-B
R-IN
A-GND
SW PROTECT
HP-R
HP-L
POWER-GND
POWER-GND
L-IN
HP-R
HP-GND
HP-L
A+10V
MIC-SIG
GM(A)-R
GM(A)-GND
GM(A)-L
(2/4)
(FAN)
MIC-AGND
HEADPHONE CONTROL
FRONT RELAY
DBFB FEEDBACK
Q504
FN1F4M
SWITCH
MUTING
CONTROL
Q505
FA1A4M
SWITCH
MUTING
CONTROL
Q861
FN1F4M
SWITCH
MUTING
CONTROL
Q812
2SC3661
MUTING
HEADPHONE
Q862
2SC3661
MUTING
HEADPHONE
Q891,892
FAN MOTOR
DRIVE
7-14. SCHEMATIC  DIAGRAM  – MAIN Board (2/4) –
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
(Page 34)
(Page 37)
(Page 39)
(Page 41)
HCD-GX8000/RG77
36
36
TP311
R366
C312
R305
R304
R316
R371
R374
R373
R377
R378
CN304
TP321
TP322
TP323
TP301
TP303
TP304
TP306
TP307
TP308
NO303
NO302
C321
C371
C326
C376
C335
C336
Q303
R
3
4
5
C
3
3
8
R
3
4
6
C
3
3
9
C
3
4
0
C341
R347
C342
R328
R317
Q310
Q307
Q301
L351
C382
RV354
R382
C383
C381
Q305
Q304
R342
R332
R329
C332
R351
C
3
5
3
C
3
5
5
R370
R352
C364
R354
RV351
IC303(2/2)
R313
R333
C316
C395
R398
IC303(1/2)
C398
C399
R397
C397
C315
R315
R327
R365
C365
R362
R334
CN301
C391
R314
C390
R393
RV304
C334
C384
Q302
C337
R375
C385
C331
L301
C333
R379
R392
R361
R391
R363
R399
C363
C362
Q392
Q394
R364
R360
Q397
R369
R368
R367
Q396
C356
R380
C361
C351
C359
TP338
C310
C309
R311
R310
R312
R308
L302
100
µ
H
R309
R306
TP320
IC301
C301
R301
C303
C305
C306
TP318
TP325
RV301
C311
R330
R302
R394
Q390
Q398
Q399
R395
R388
R387
R390
C396
R396
Q395
Q393
Q391
R344
T301
TP317
HP901
HRPE901
CN2
CN1
Q306
R320
C314
JR390
R355
C304
C354
T
P
3
0
9
R343
C308
C307
R307
3.3k
10 50V
47k
2.2k
10k
47k
47k
1k
47k
75k
17P
8P
3P
390p
390p
390p
390p
0.01
100V
2.2
50V
2SC2001
1
8
k
6
8
0
0
p
1
8
k
6
8
0
0
p
1
8
0
0
0
p
10
50V
3.3k
47
16V
2.2k
10k
FA1A4M
2SA812
2SC3624
27mH
0.00012
220k
8.2k
330p
0.01
FA1A4M
FN1F4M
2.2k
8.2k
10k
0.00012
3.3k
0
.1
1
5
0
V
2.2k
4.7k
2200p
2.2k
47k
NJM4565M(TE2)
1k
2.2k
1
22p
2.2M
NJM4565M(TE2)
0.01
0.01
15k
10
50V
1
10k
15k
10k
1
10k
100k
3P
100
10V
1k
470
10V
4.7k
220k
27p
27p
2SC2001
15000p
75k
10
50V
0.01
27mH
330p
10k
2.2k
2.2k
2.2k
2.2k
2.2k
4700p
4700p
FA1A4M
FA1A4M
680
680
FA1A4M
3.3k
3.3k
47k
2SB1068
2.2
50V
22k
10
50V
0.01
47
16V
10 50V
47 16V
100
100
100
100
4.7k
22k
HA12237
0.01
3.3k
0.1
1
50V
2.2
50V
47k
10
50V
22k
4.7k
10k
FA1A4M
FA1A4M
2SC3624A
4.7k
22k
10k
10k
22
50V
10k
FA1A4M
2SB1116
2SB1116
5.6
6P
3P
FA1A4M
2.2k
2200p
47k
5.6
470
16V
10
50V
1M
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
E1
E2
E3
E4
E5
E6
E7
52
58
67
66
68
61
YY1
YY2
YY3
YY4
YY5
YY6
YY1
YY2
YY3
YY3
YY4
YY5
YY5
YY6
57
56
70
90
91
89
XX1
XX2
XX3
XX4
XX1
XX2
XX3
XX4
51
54
55
69
65
53
L-PB
L-REC
R-PB
E-HOT
R-REC
L-PB
R-PB
CAPM+
AHALF
ASHUT
DGND
BSHUT
BMETAL
CAPM-
CAPMH/L
ATRGM+
BTRGM+
TRGMGND
BHALF
L
GND
R
GND
GND
GND
GND
EOUT2
TAI2
PB-OUT2
NC
REC-IN2
ALC2
NC
REC-OUT2
A/B
VCC
GND
I-REF
TEST
REC-OUT1
NC
ALC1
REC-IN1
NC
PB-OUT1
TAI1
EQOUT1
PB-NF1B
AIN1
RIP
BIN1
GND
BIN2
NC
AIN2
RETN
REC-
PB-
NF2A
NF1A
PB-
PB-
EQ1
ALC
DET
REC MUTE
ON/OFF
ON/OFF
MUTE
SPEED
NORMAL/HIGH
OFF
PB-
EQ2
NF2B
PB-
ALC ON/
SW.R2
GND
SW.P2
CONT.
SW.P1
GND
SW.R1
VCC
GND
(3/4)
Q396,397
CAPSTAN MOTOR
DRIVE
INVERTER
Q393,394
TRIGGER PLUNGER
DRIVE(DECK A)
TRIGGER PLUNGER
Q391,392
DRIVE(DECK B)
Q301,307,310
REC BIAS
SWITCH
Q302,303
BIAS OSC
BIAS OSC
/70
A 120
BPLAY.SW
/70
120
B
APLAY.SW
(FOR ADJUSTMENT)
L-CH
R-CH
TAPE
1
7
ERASE
R-CH
L-CH
(REC/PB/ERASE)
(DECK B)
(DECK A)
(PB)
MECHANISM DECK
(TCM-230AWR41)
(CHASSIS)
(CHASSIS)
MUTING
BUFFER
BUFFER
BUFFER
REC/PB SWITCHING
Q304,305
DECK A/B SELECT
SWITCH,
REC/PB EQ AMP,
ALC
+3.3V
BLOCK
IC302
µ
PC1330H
REC/PB SWITCHING
Q389
FA1A4M
MUTING CONTROL
SWITCH
LOW-PASS
FILTER
7-15. SCHEMATIC  DIAGRAM  – MAIN (3/4)/HEAD (A)/HEAD (B) Boards –
 See page 28 for Waveforms.
The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
[
] : TAPE PLAY (DECK A)
{
 } : TAPE PLAY (DECK B)
〈〈
 
〉〉
: REC
(Page 32)
(Page 34)
(Page 37)
HCD-GX8000/RG77
37
37
C920
D907
D906
D908
D909
C919
C918
D916
D917
D915
D914
C917
C916
D919
D924
D923
D918
C914
C915
C910
R917
C911
IC951
µPC3504
C925
C951
IC961
C961
IC101
C922
C921
C909
D921
D509
D508
D501
D502
D503
D504
D505
D601
C434
C432
R532
C433
R541
R549
R448
R447
R446
R544
R545
R543
C546
R540
R432
R433
R434
R535
R536
R537
TP431
TP439
TP530
TP529
R530
R529
R419
R420
R517
C516
C416
R575
C512
X502
R513
X501
C511
C510
R509
R511
R430
R429
R503
R502
C502
TP437
TP485
R584
R591
R590
R589
R588
R557
R556
TP463
C564
C562
CN401
C962
C932
CN902
CN501
D922
D920
C601
IC601
C602
R604
D603
R603
C603
C530
R602
D602
R601
TP514
R548
R547
R546
R579
TP516
R918
R919
Q912
IC911
µPC7805A
JW951
C596
FB599
Q601
FB516
FB562
R583
R488
R574
R573
R580
IC501
Q911
R470
R585
R593
R492
C598
C498
R592
R493
C912
3300
25V
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
2200
16V
2.2k
0.1
470
10V
0.1
AN7809
0.1
M5F7810L
470
16V
0.1
1000
25V
11ES2N
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
47p
47p
47k
47p
10k
100
100
100
100
100
100
100
0.001
100
100
100
470
470
100
470
10k
10k
0
4.7k
10k
2200
6.3V
0.1
10k
0.1
16MHz
0
32.768KHz
15p
22p
10k
330k
100
100
10k
10k
0.022
100
100
100
100
10k
100
100
0.01
100
10V
30P
470
10V
470
10V
13P
4P
11ES2N
11ES2N
10
50V
M62703ML
0.1
47k
1SS355
47k
0.1
100p
4.7k
1SS355
220
10k
10k
10k
10k
2.2k
2.7k
FA1A4M
0.1
2SC1623
100
100
10k
10k
10k
M30620MCN-A09FP
RT1P137L-TP
100
10k
330
10
50V
0.1
4.7k
4.7k
2200
6.3V
C1
C3
C4
C6
C7
C8
D1
D2
D4
D5
D7
D8
E1
E2
E3
E4
E5
E6
E7
5
3
5
8
6
5
6
6
6
7
6
8
6
9
5
2
5
1
5
4
5
5
7
0
90
91
89
5
6
5
7
2
4
2
6
43
35
37
40
33
32
1
9
44
45
46
47
48
49
81
2
8
34
6
1
83
84
86
87
7
7
7
6
2
9
3
0
50
7
8
3
8
88
8
0
82
4
7
3
7
4
7
5
41
36
84
86
83
2
7
2
1
2
2
2
5
2
3
3
2
RR1
RR2
RR3
RR4
RR1
RR2
RR3
RR3
RR4
RR4
41
29
30
4
73
74
75
38
IIC-DATA
SPEANA
IIC-CLK
SIRCS
KEY INT DISPLAY
KEY INT POWER
POWER LED
D+4V
D+4V
EVER+4V
EVER+4V
EVER+4V
VF(1)
VF(1)
VF(2)
VF(2)
VG
VG
A+10V
A+10V
A+10V
GC+4V
GC-RESET
D-GND
D-GND
D-GND
D-GND
A+10V
SPEANA
SPEANA
VF(1)
VF(2)
FAN ON
-VG
AC4(1)
AC4(2)
AC3(1)
AC3(2)
EVER+4V
D-GND
STK MUTE
IIC-CLK
IIC-DATA
D+3.3V
D-GND
X
-O
U
T
V
S
S
X
-IN
V
C
C
N
M
I
S
C
O
R
IIC
-C
L
K
SQ-CLK
CD-DATA
CD-CLK
S
T
-M
U
T
E
S
T
-C
E
S
T
-D
O
U
T
S
T
-D
IN
S
T
-C
L
K
XRST
V
C
C
V
S
S
T
C
-M
U
T
E
E
Q
-H
/N
P
B
-A
/B
MODEL-IN
AVSS
VREF
AVCC
T
C
-R
E
L
A
Y
X
C
-IN
X
C
-O
U
T
G
N
D
G
N
D
R
E
C
-M
U
T
E
A
L
C
BU UP/DOWN-SW
A-TRIG
B
-T
R
IG
C
A
P
M
-H
/L
A-SHUT
A
-H
A
L
F
B-SHUT
A
-P
L
A
Y
B-HALF
B
-P
L
A
Y
CLOCK-OUT
TXD1
GEQ
S
IR
C
S
S
U
R
1
S
U
R
2
S
U
R
3
B
U
-P
W
M
3
B
U
-P
W
M
2
B
U
-P
W
M
1
CD-POWER
SENS
OPEN-SW
CLOSE-SW
STK-MUTE
STBY-RELAY
FRONT-RELAY
LOAD-OUT
LOAD-IN
O
N
/O
F
F
A
U
D
IO
 O
U
T
LD-ON
SQ-DATA-IN
TBL-SENS
C
A
P
M
-C
N
T1
S
O
F
T
-T
E
S
T
D
IS
P
L
A
Y
-K
E
Y
P
O
W
E
R
-K
E
Y
S
T
B
Y
-L
E
D
PROTECTOR
A
M
S
-IN
T
U
N
E
D
S
T
E
R
E
O
DEST-IN
CD-MUTE
G
A
M
E
/V
C
D
V
ID
E
O
-O
U
T
H
P
-M
U
T
E
H
P
-D
E
T
E
C
T
S
W
-L
IN
K
-L
E
D
L
IN
E
-
M
U
T
E
DATA
LINK-RELAY
SW-AD-KEY
SW-RELAY
N
O
-U
S
E
N
O
-U
S
E
NO-USE
USE
NO-
DATA
IIC-
(4/4)
STBY RELAY
LINK RELAY
(FOR CHECK)
B+ SWITCH
B+ SWITCH
+5V REGULATOR
+4V REGULATOR
G
I
O
G
I
O
G
I
O
+9V REGULATOR
G
I
O
+10V REGULATOR
G
I
O
RESET SIGNAL
GENERATOR
RESET
SWITCH
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
NO-USE
R
E
S
E
T
A
C
-C
U
T
XLT
GC-RESET
S
W
-O
N
-L
E
D
S
W
-M
A
TR
IX
-S
U
R
R
-2
-L
E
D
S
W
-M
A
T
R
IX
-S
U
R
R
-1
-L
E
D
B
IA
S
GEQ CLK
NO-USE
(EXCEPT SP)
(GX8000)
R593
2.2k
1k (E,MX,AR)
7-16. SCHEMATIC  DIAGRAM  – MAIN Board (4/4) –
 See page 28 for Waveforms.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
) : CD PLAY
[
] : TAPE PLAY (DECK A)
{
 } : TAPE PLAY (DECK B)
〈〈
 
〉〉
: REC
: Impossible to measure
(Page
36)
(Page 34)
(Page 35)
(Page 43)
(Page 41)
Ver 1.2
HCD-GX8000/RG77
38
38
IC722
GAME IN BOARD
1-683-534-
11
(11)
3
2
4
1
5
PHONES
J631
MIC
LEVEL
RV722
2
3
4
6
5
7
1
1
4
MIC
J721
8
5
R
L
AUDIO
VIDEO
GAME
INPUT
J601
(CHASSIS)
(CHASSIS)
1
10
1
2
F
D
MAIN BOARD
CN781
MAIN BOARD
CN783
7-17. PRINTED  WIRING  BOARD  – GAME IN Board –
 See page 27 for Circuit Boards Location.
(Page 33)
(Page 33)

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