Sony HCD-RG490 Service Manual page 112

HCD-RG490/RG590
2-2. SCHEMATIC DIAGRAM – DECK Board –
DECK-A/B SELECT SWITCH,
R349
100
R481
4.7k
CN008
EXCEPT
11P
RG490:MX/
RG590:MX
PB-L
FB301
PB-R
0
A-GND
REC-R
(Refer to page 38 on REC-L
service manual)
REC/PB SW
+9V
REC-MUTE
O-BIAS
(Refer to page 42 on
DECK-D-GND
service manual)
NC
RG490:MX/
RG590:MX
HCD-RG490/RG590
Q405,406,408
REC/PB SELECT SWITCH
R350
0
R489
22k
R484 Q406
22k 2SA1235
Q408
2SA1235
R483
22k
R488 R351
22k 1k
Q405
2SC3052
R485
R482 2.2k R490
47k 4.7k
R325 100 C329 0.047
R326 100 C330 0.047
C433 0.01 D301 UDZW-TE17-4.3B
C401
0.1 R401 R403
50V 47k 22k
3 8
2
1
C411 C413
10p 220p
IC401(1/2)
BA4558
C405
R409 R411
220p
100k 470k
C403 R405
47p 47k
REC AMP R407 R423 C417
4.7k 47k 0.01
C409
C430 R415 10
0.1 2.2k 50V
C410
R416
10
2.2k
50V
R408 C418
R424
C404 R406 4.7k 0.01
47k
47p 47k
C406 R412
R410
220p 470k
100k
IC401(2/2)
BA4558
C402 C412 C414
6
0.1 R402 R404 10p 220p
7
50V 47k 22k
5
4
Q409,410
Q451,452
REC CONTROL SWITCH
REC BIAS SWITCH
R455
10
R442 R453
47k 4.7k
Q410
RT1N431C
Q452
2SC3052
R451
10k
R452
Q409 47k
RT1N431C JR402
0
C315 R309
8 47p 470
3
1
2
R306 R305
220k 220k
R323 R317
4.7k 470k IC301(1/2)
NJM14558M-TE2
R313
47
R319 C323 C325 R311
22k 0.0047 0.0022 220
PB AMP C317
10
50V
C318
10
50V
C352 R320 C324 C326 IC301(2/2) R312
0.1 22k 0.0047 0.0022 NJM14558M-TE2 220
R314
C351 47
220 R324
10V 4.7k R318
6
470k R310
7
470
5
4
C316
Q403 47p
2SA1235
REC SWITCH
R427
0
R413 R445 R431 R435
220k 0 1k 10k
R429 Q401
10k R433 C415 2SK2158
C431 R440 47k 0.0047
MUTING
0.1 10k S
C460
470p
R434 C416
47k 0.0047
R430
10k
D401
R414 MC2838
220k S
Q402
2SK2158
R446 R432 R436
MUTING
0 R428 1k 10k
0
C462
Q404
470p
2SA1235
REC SWITCH R466
0
R449 R450 R456 R464
22 22 22 1k
R462
2.2k
1 6
R454
4.7k
2
C453
Q451 0.001
3 4
KTA1271Y-AT C454
0.0047
Q453
2SC2001
R457
BIAS
22k C452
OSC 47
16V
R458 C458
4.7 0.0022
4 4
Q301
2SJ460
PB SWITCH
(DECK-A)
S
R301 C301
47k 1000p
C305
220k
Q302
2SJ460
R302 C302
PB SWITCH
47k 1000p
(DECK-A)
S
R315
100
S
Q303
2SJ460
R303 C303
PB SWITCH 47k 1000p
(DECK-B)
C306 R304 C304
47k 1000p R316
220k
100
S
Q400,407
Q304
C354
2SJ460 MUTING CONTROL
0.1
PB SWITCH
R443 SWITCH
(DECK-B) 10k
Q407
2SA1235
C356
10
50V Q305
2SC3052
R307
MUTING
4.7k
JR310 C355
R447 R439
0 0.01
1M 4.7k
C307 Q306
0.01 2SC3052
R308
MUTING
4.7k
S
R441
Q400 0
2SK2158
C461
470p
R461 R463 R465
2.2k 1k 0
R459 R460
0 0
5
L451
BIAS
OSC C456
0.01
HP1
(PB)
(DECK-A)
CN301
3P
L-CH
R-CH
HRPE1
(REC/PB/ERASE)
CN302
(DECK-B)
8P
ERASE
R-CH
L-CH