Schematic Diagram - Main Board (4/6) - Sony HCD-ZX80D Service Manual

7-27. SCHEMATIC DIAGRAM – MAIN Board (4/6) – • See page 54 for Waveforms.
HP1
(PB)
(DECK-A)
CN504
3P
L-CH L-PB
GND
R-PB
R-CH
HRPE1
CN503
(REC/PB/ERASE) 8P
(DECK-B)
L-PB
GND C326
680p
L-CH L-REC
R-PB C376 680p
GND
R-CH R-REC
E-HOT
ERASE GND
R370
3.3k
C371
0.0047
C370
0.01
100V
HCD-ZX80D/ZX100D
(4/6)
Q325
2SD2704
MUTING
R318
Q375 2.2k
2SD2704
MUTING
R368
2.2k
Q377
2SA1162
Q322
2SD2704
R336
MUTING
2.2k
R390
10k
R399
10k
Q321
2SD2704
R337
MUTING
2.2k
Q379
DTC114EKA
Q372
2SD2704
R387
MUTING
2.2k
Q373
2SD2704
R385
MUTING
2.2k
R376
4.7k
R375
0
C373
0.001
R374 R373
4.7k 4.7k
R372
0
C372
0.001 Q378
RT1P137P-TP-1
R371
4.7k
1 4
R386
33
3 6
T301 R377 R378
47 10k
BIAS OSC
Q378,380
C377
0.01 Q370 REC BIAS SWITCH
2SD596
BIAS OSC
C379 R379 C374
0.0068 10 47 10V
C382
1200p
C332
1200p
Q382,383
MUTING CONTROL SWITCH
Q382
DTA114EKA
Q383
DTC114EKA
Q377,379,381 DECK A/B SELECT SWITCH,
MUTING CONTROL SWITCH REC/PB EQ AMP
C309
R396 47 16V
10k
C310
10 50V
53
Q381
DTC114EKA
L320 R392 R314
27mH 2.2k
6.8k
R338
10k
C328 C333 C359
120p 330p 47 16V
C335
0.022
L370 R380 R364
27mH 6.8k 2.2k
R388
10k
C378 C383
120p 330p
C385
0.022
L372
100µH
R395
47k
R394
4.7k
52
Q380
DTC114EKA
49 49
C311
10
50V
R339
15k
C314
0.0022
R335 R305
1k 47k
R302 R319 R303 R304
4.7k 2.2k 10k 2.2k
C303 C305
0.1 1
50V
C304 C306
R301
10 2.2
1.5k
50V 50V
C301
0.012
PB-NF1A TEST
AIN1 I-REF
RIP GND
BIN1 ALC DET
REC-RETN VCC
IC301
HA12237
GND REC MUTE ON/OFF
BIN2 MUTE ON/OFF
NC A/B
AIN2 NORMAL / HIGH SPEED
PB-NF2A ALC ON/OFF
C355 C361
C351 1 R391 R389 10
0.012 50V 1k 15k 50V
REC-OUT-R
R351
1.5k
C354
10 50V
C353
0.1
R369 R353 C356
2.2k 10k 2.2 50V
R352 C364
4.7k 0.0022
R354 R355
2.2k 47k
Note: Refer to SUPPLEMENT-1 for the MAIN board of US model.
HCD-ZX80D/ZX100D
Ver. 1.1
H1
H2
REC-OUT-L
H3
(Page 47)
K1
K2
(Page 50)
C1
C2
R306
22k
R307 C308
1M 470
C307
10V
10 L302
100µH
50V
(Page 46)
R308 100 54
C312 R309
10 50V 4.7k
C3
R310 100 55
R311 100
R312 100 56
REC-OUT-L
L1
REC-OUT-R
L2
(Page 51)