Tape Deck Section - Sony HCD-VX3A Service Manual

Q Q
3 7 6 3 1 5 1 5 0

TAPE DECK SECTION

REC-L
E
MAIN
SECTION
HRP1
(Page 22)
(PLAYBACK)
PB EQ AMP
L-CH (DECK A)
IC611
R-CH R-CH
HRP2 (1/2)
(RECORD/PLAYBACK)
PB EQ AMP
(DECK A)
IC601
L-CH
R-CH R-CH
REC/PB SWITCH
IC602
3 1
T E
L 1 3 9 4 2 2 9 6 5 1 3
R-CH R-CH
2
C331,L331
BIAS
TRAP
R-CH
RV441 RV341
REC BIAS (R) REC BIAS (L)
(DECK B) (DECK B)
REC BIAS
SWITCH
Q623
HRP2 (2/2) BIAS OSC
(ERASE) T621
BIAS OSC
Q621,622
16
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DECK PROCESSOR
DECK A/B SELECT,PB/REC EQ AMP
DOLBY NR AMP,ALC,AMS
IC301
34
R IN (L)
43
ALC (L)
44
ALC
A IN (L) 70
48
RV311 B IN (L) 120
46
PB LEVEL (L)
(DECK A)
BIAS (N)
33 R-CH
BIAS (C)
32
BIAS (M)
31
17 19 15
RV301 S1004
(DECK A 120/70)
PB LEVEL (L)
(DECK B)
S1008
(DECK B 120/70)
4
100 85 84 83 82 81 80 79 78
A+7V
87 87 86
S1001 S1002
(DECK-A PLAY) (DECK-B PLAY)
x a o u 1 6 3
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8
35
DOLBY NR
AMP
PB OUT (L)
CIRCUIT
DOLBY PASS
RV301
REC LEVEL (L)
L.P.F
(DECK B)
REC EQ
39 38
28 27
CIRCUIT
16 18 20 22 23 24 25
Q Q
3 7 6 3 1
SYSTEM CONTROL
IC501 (2/3)
88 89 91
ROTATION
DETECT SENSOR
(DECK A)
S1003 S1006 IC001
(DECK-A HALF) (DECK-B HALF)
c o
S1005
(DECK-A REC)
.
S1009
(DECK-B REC)
21 21
2 4
9 9 8
TC L
F
40
MAIN
SECTION
(Page 22)
36
AMP
AMS
26
5 1 5 0 8 9 2 4 9
RV1001
TAPE SPEED
(HIGH)
Q335
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
77 76
CAP-M CNT 2
CAP-M CNT 1
90 73 72
ROTATION TRIGGER TRIGGER
DETECT SENSOR PLUNGER DRIVE PLUNGER DRIVE
(DECK B) (DECK A) (DECK B)
m
IC002 Q333,334 Q331,332
SL1 SL2
TRIGGER PLUNGER TRIGGER PLUNGER
(DECK A) (DECK B)
HCD-VX3A
2
9 9
• RCH is omitted
• Signal Path
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
8 2 9 9
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN
74 MOTOR DRIVE
Q336-339
M1
M
(CAPSTAN)
CAPSTAN
75 MOTOR DRIVE
Q340-343