Schematic Diagram - Main Section (3/4) - Sony HCD-GTX66 Service Manual

HCD-GTX66/GTX77
Q Q
3 7 6 3 1 5 1 5 0
6-14. SCHEMATIC DIAGRAM — MAIN SECTION (3/4) — • Refer to page 64 for IC Block Diagrams.
1
A
HP901
TEST
PB HEAD
PIN
(DECK A)
B
PB
(L-CH)
PB
(R-CH)
C
HRPE901
REC/PB/ERASE
HEAD
(DECK B)
REC/PB
(L-CH)
T E
L 1 3 9 4 2 2 9 6 5 1 3
D
REC/PB
(R-CH)
ERASE
E
F
G
w w w
H
HCD-GTX66/GTX77
2 3 4
MAIN BOARD (3/4)
CN510
3P
L
1
GND 2
R
3
CN503
3P
L-PB 3
GND 2
R-PB 1
0 Q376
2SD2704K-T146
-0.9<-0.2>[0.7]
R385
2.2k
Q375
2SD2704K-T146
-0.9<-0.2>[0.7]
R387
2.2k
0
0
Q374 Q377
CN507
2SD2704K-T146 2SA1162-YG-TE85L
8P
R384
8.9
0.7[-8.7] 9
L-PB 2.2k
8 0
[-8.7]
R383
8.2[9]
GND
7
0.7[-8.7] 2.2k
R390
L-REC
6
10k
Q373
R-PB
5
2SD2704K-T146
GND
4
Q372
R-REC
3
2SD2704K-T146
E-HOT
2 0[9]
R382
0.7[-8.6]
GND
1 0
2.2k
R381
0.7[-8.6]
2.2k
RT1N141C-TP-1
Q371
2SD2704K-T146
0
Q371-376 Q377,379,381
MUIE MUTE CONTROL SWITCH
L371
27mH
C380
120p
L370
27mH
C378
120p
T301
TRANSFORMER
BIAS OSCILLATION
R370
3.3k
6 1
2SD596-T1DV4
C371
5 2
4700p
[8.2]
R378
4 3
x a o
y
C377
0.01
. i
http://www.xiaoyu163.com
5 6
(Page 44)
MAIN BOARD (1/4)
3
-0.9
Q382
<-0.2>
RT1P141C-TP-1
[8.9]
9
IC B/D
C309
9[0]
47
16V
0.6
0
9[0]
C310 4.4
Q Q
0[3.2]
3 7 6
10 50V 0
Q383
RT1N141C-TP-1
0
Q381
RT1N141C-TP-1
TP338
4.8[0]
0
56
0.6
4.8[0]
0[3.2]
C359
Q379
47
16V
Q382,383
TC PB MUTE CONTROL SWITCH
R388 R393
6.8k 2.2k
R380 R397
6.8k 2.2k
55
Q378
R386 L372
RT1P137P-TP-1
33 100uH
Q370
0.1[8.9] 9
BIAS OSC
Q370
9[6.8]
Q378,380
0.1 REC BIAS CONTROL SWITCH
0
[0.2]
0.1
10k
9[0]
[-0.2]
u 1 6 3
0[3.2]
Q380
RT1N141C-TP-1
46 46
http://www.xiaoyu163.com
2 4
8 9 9
7 8 9
MAIN BOARD (2/4)
5
C314
2200p
C311
R337 R336 R339 10
10k 10k 22k 50V
TP325 TP318
C307
10
50V
30 29 28 27 26 25 24 23 22 21
R307
PB-NF2(L)
1M
R306
PB-NF1(L)
TP320
31 TEST 20
22k
1.3
A IN(L)
32 I REF 19
RIP
GND
33 3 1 5 1 5 0 18 8 9 2
8.4
IC301
B IN(L) C308
34 ALC DET 1M 17
470 10V
9
REC-RETN
35 IC301 VCC 16
0[3.3] R308 100
GND HA12237F
REC MUTE OFF/ON
36 15
DECK A/B SELECT, 3.1<0> C312 10 50V
B IN(R)
37 MUTE ON/OFF 14
PB/REC EQUALIZER AMP
R310 100
3.3
NC A/B
38 13
R311 0
0
A IN(R) HIGH/NORMAL
39 12
3.2 R312 100
PB-NF1(R)
40 11
PB-NF2
(R)
1 2 3 4 5 6 7 8 9 10
TP311 TP309
R356 R357 R389 C361
10 50V
10k 10k 22k
R369
2.2k
m
c o
.
2
8 9 9
10
(Page 45)
4 9 8 2 9 9
JW584
59
R309 4.7k 60
57
58
D1
MAIN
7 BOARD
(4/4)
(Page 47)
D3