Block Diagram - Tape Deck Section - Sony HCD-VX5A Service Manual

HCD-VX5A/VX5AJ/VX7A
Q Q
3 7 6 3 1 5 1 5 0
7-3. BLOCK DIAGRAM – TAPE DECK Section –
HP101
(PLAYBACK)
L-CH
R-CH R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
L-CH
R-CH R-CH
T E
L 1 3 9 4 2 2 9 6 5 1 3
R-CH
RV441
REC BIAS (R) REC BIAS (L)
(DECK B)
BIAS OSC
HRPE101 (2/2)
T621
(ERASE)
w w w
05
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
PB EQ AMP
AIN (L)
48
(DECK A)
BIN (L)
IC611
46
RV311
PB LEVEL (L)
(DECK A)
BIAS (N)
33
BIAS
BIAS (C)
32 CONTROL
BIAS (M)
CIRCUIT
31
PB EQ AMP
(DECK B)
IC601
RV301
PB LEVEL (L)
(DECK B)
17 19 15 16 18 20 22 23 24 25
REC/PB SWITCHING
S1004
IC602
3 1 (DECK A 120/70)
R-CH R-CH
S1008
(DECK B 120/70)
4
2
C331, L331
BIAS
TRAP
RV341
(DECK B)
REC BIAS
B+
SWITCH
(A+7V)
Q623
100 85 84 83 82 81 80 79 78
BIAS OSC
Q621, 622
87
D+5V
S1001
(DECK A PLAY)
x a o
. i
– 25 –
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DOLBY PASS
70
DOLBY NR
AMP
120
CIRCUIT
+
R-CH
L.P.F. ALC
BUFFER
MAOUT
28 43 44 35 34
27
MSIN
AMS
CIRCUIT
MSOUT
26
Q Q
3 7 6
ROTATION ROTATION
DETECT SENSOR DETECT SENSOR
(DECK A) (DECK B)
IC1001 IC1002
77 91 90
SYSTEM CONTROLLER
IC501 (2/4)
86 88 89
S1006
(DECK B HALF)
S1003
(DECK A HALF)
S1005
(DECK A REC)
S1002
S1009
(DECK B PLAY)
u 1 6 3
y (DECK B REC)
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2 4
8 9 9
PB OUT (L)
PB-L
40
(Page 27)
EQ OUT
(L)
REC
36
EQ AMP
39 38
RV301
REC LEVEL (L)
(DECK B)
REC-L
(Page 28)
3 1 5 1 5 0 8 9
TAPE SPEED
TRIGGER PLUNGER TRIGGER PLUNGER
DECK A DECK B
TRIGGER TRIGGER
PLUNGER DRIVE PLUNGER DRIVE Q335
(DECK A) (DECK B)
Q333, 334 Q331, 332
73 72 76
m
c o
.
– 26 –
2
8 9 9
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
F
: RECORD
G
2 4 9 8 2 9 9
RV1001 RV1002
TAPE SPEED
(HIGH) (NORMAL)
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
CAPM-CNT1 75
M1
M
MOTOR DRIVE
(CAPSTAN)
CAPM-CNT2
74
Q336 – 343