Schematic Diagram - Main (3/4)/Head (A)/Head (B) Boards - Sony HCD-RV7 Service Manual

HCD-RV7/RV8
Q Q
3 7 6 3 1 5 1 5 0
7-19. SCHEMATIC DIAGRAM – MAIN (3/4)/HEAD (A)/HEAD (B) Boards – •
CN301
3P
L
GND
(FOR ADJUSTMENT)
R
(DECK A)
HP901
T E (PB)
L CN1 1 3 9 4 2 2 9 6 5 1 3
NO302
3P
3P
L-CH L-PB
GND
R-PB
R-CH
TAPE
MECHANISM DECK
BLOCK
(CHASSIS)
(TCM-230AWR41)
NO303
HRPE901 CN2
8P
6P
(REC/PB/ERASE)
L-PB
1
GND
L-CH
L-REC
R-PB
GND
R-CH
R-REC
GND
ERASE E-HOT
7
(DECK B)
(CHASSIS)
CN304
17P
TP317
BMETAL
BPLAY.SW
B 120 /70
BHALF
APLAY.SW
BSHUT
A120 /70
+3.3V
AHALF
DGND
ASHUT
(Page 35)
BTRGM+
TRGMGND
ATRGM+
CAPMH/L
CAPM+
CAPM-
w w w
See page 35 for Waveforms.
(3/4)
JR390
0
IC303(2/2)
NJM4565M(TE2)
C399 R397
0.01 15k
C398
0.01
IC303(1/2)
NJM4565M(TE2)
LOW-PASS
R398 2.2M
FILTER
R315 C315
C395 22p
R313 R327 10k 1
1k 15k
R333 C316
2.2k 1 R365 C365
10k 1
R362
10k
Q306
FA1A4M
R334
MUTING 100k
Q389
FA1A4M
MUTING CONTROL
C391 C390 SWITCH
R314
100 470
1k
16V 10V
REC/PB SWITCHING
IC302
µPC133DH
C321
TP321 390p YY1
TP322
TP323 YY2
C371
390p
R393
4.7k
C326
TP301 390p YY3
Q304
FN1F4M
TP303 YY4
Q304,305
TP304 C376 390p YY5 REC/PB SWITCHING
TP306 YY6
Q305
FA1A4M
TP307
TP308
RV304
220k
R371 C334 C384
47k 27p 27p
57
R373
91 1k
R374
56
47k
Q302,303
90
R375 BIAS OSC
75k
T301 Q302 C337
2SC2001 15000p
BIAS OSC
R377
70
47k
89
XX1 R378 75k C335
Q303
0.01
2SC2001
100V
XX2
C336
XX3 2.2
50V R343 R344
XX4 5.6 5.6
x a o
y
. i
http://www.xiaoyu163.com
(Page 38)
C397
R388 R387
10
22k 10k
50V
Q390
FA1A4M
BUFFER
Q398
FA1A4M
R395
4.7k BUFFER
Q399
2SC3624A
BUFFER C396
R396 R390
22
10k 10k
50V
C309 47 16V
YY1
C310 10 50V
Q Q
YY3
3 7 6
YY5
C385 YY2
10
50V
C359
47
16V
C332 C333
0.00012 330p
R332 R342
8.2k 2.2k
L301
27mH R329
10k
C331
0.01
C383 C381
L351 330p 0.01
27mH
R379
R392
10k
2.2k
RV354
220k
C382 R382
0.00012 8.2k
Q301 Q307
2SC3624 2SA812
R360
680
R316
10k
Q391
Q391,392
2SB1116
TRIGGER PLUNGER
R328 DRIVE(DECK B)
2.2k R317
10k Q301,307,310
C362 R361 R391
REC BIAS
4700p 2.2k 2.2k
SWITCH
Q392
C341 C342 FA1A4M
R347
10 47
3.3k Q310
50V 16V
FA1A4M
69 65 52
XX1
u 1 6 3
.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
[
{
40 40 〈〈
http://www.xiaoyu163.com
2 4
8 9 9
C311 R304 R305
R302 C314
10 2.2k 47k
4.7k 2200p
50V
R330
22k
RV301
47k
R320
2.2k
C305
C303 1
0.1 50V
C306
R301
2.2
3.3k
50V
C301
0.01
TP325 TP318
DECK A/B SELECT
SWITCH,
REC/PB EQ AMP,
ALC
IC301
HA12237
PB-NF1B
PB-
NF1A
TEST
TP320
AIN1
I-REF
RIP GND
R307
ALC
BIN1 DET
3 1 5 1 5 0 8 9 2
REC-
RETN
VCC
REC MUTE
GND
ON/OFF
BIN2 MUTE
ON/OFF
TP338 NC A/B
AIN2
NORMAL/HIGH
SPEED
PB-
ALC ON/
NF2A
OFF
C351
0.01
R351
3.3k C356
2.2
50V
R380
22k
C364 R352 R370 R354 RV351
2200p 4.7k 2.2k 2.2k 47k
R355
47k
R364 R367
680 47k
Q396
2SB1068
Q393
Q393,394
2SB1116
TRIGGER PLUNGER CAPSTAN MOTOR
DRIVE(DECK A)
R366
C363 R363 R399 R368
3.3k
4700p 2.2k 2.2k 3.3k
Q394 Q395 Q397
FA1A4M FA1A4M FA1A4M
INVERTER
m
51 54
XX2 XX3 XX4
c o
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
] : TAPE PLAY (DECK A)
Replace only with part number specified.
} : TAPE PLAY (DECK B)
〉〉 : REC
2
8 9 9
E1
E2
R394
10k
53
E3
R306
22k
1M
C308
4 9 8 2 9 9
C307
470 L302
10
16V
50V
R308
100 61
C312 R309
10 50V 4.7k 58
R310 100
67
(Page 41)
R311 100
66
R312 100
68
C361
10
50V
E4
Q396,397
DRIVE
R369
3.3k
E5
55
E6
E7