Read Sony HCD-GX8000 / HCD-RG77 Service Manual online
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
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
100V
2.2
50V
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
10V
1k
470
10V
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
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
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
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
NF2A
NF1A
PB-
PB-
EQ1
ALC
DET
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)
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