Block Diagram - Tape Deck Section - Sony HCD-GRX5 Service Manual

HCD-GRX5/RX66
7-2. BLOCK DIAGRAM – TAPE DECK Section –
HRP1
(PLAYBACK)
PB EQ AMP
L-CH (DECK A)
IC611
R-CH R-CH
HRP2 (1/2)
(RECORD/PLAYBACK)
PB EQ AMP
(DECK B)
L-CH
IC601
R-CH R-CH
REC/PB SWITCHING
IC602
3 1
R-CH R-CH
2
C331, L331
R-CH
RV441 RV341
REC BIAS (R) REC BIAS (L)
(DECK B) (DECK B)
REC BIAS
SWITCH
Q623
BIAS OSC
HRP2 (2/2)
T621
(ERASE)
BIAS OSC
Q621, 622
05
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
70
AIN (L)
48
BIN (L)
46
120
RV311
PB LEVEL (L)
R-CH
(DECK A)
L.P.F.
BIAS (N)
BUFFER
33
BIAS
BIAS (C)
32 CONTROL
BIAS (M)
CIRCUIT
31
RV301
AMS
PB LEVEL (L)
CIRCUIT
(DECK B)
17 19 15 16 18 20 22 23 24 25
S1004
(DECK A 120/70)
S1008
(DECK B 120/70)
4
BIAS
TRAP
B+
(A+7V)
97 99 94 93 92 90 89 88 87
95 96
S1003
(DECK A HALF)
S1001 S1002
(DECK A PLAY) (DECK B PLAY)
– 21 –
DOLBY PASS
DOLBY NR
AMP
CIRCUIT
+
ALC
EQ AMP
MAOUT
28 43 44 39 38
35 34
27
MSIN
RV301
REC LEVEL (L)
(DECK B)
MSOUT
26
SL1
TRIGGER PLUNGER
DECK A
ROTATION ROTATION TRIGGER
DETECT SENSOR DETECT SENSOR PLUNGER DRIVE
(DECK A) (DECK B) (DECK A)
IC1001 IC1002 Q333, 334
31 26 27 84
SYSTEM CONTROLLER
IC501 (2/3)
98 28
S1006
(DECK B HALF)
S1005
(DECK A REC)
S1009
(DECK B REC)
PB OUT (L) PB-L
40 B
(Page 23)
EQ OUT
(L)
REC
36
REC-L
C
(Page 24)
RV1001
TAPE SPEED
(HIGH)
SL2
TRIGGER PLUNGER
CAPSTAN MOTOR
DECK B
CONTROL SWITCH
Q1001
TRIGGER
Q335
PLUNGER DRIVE
(DECK B)
Q331, 332
83 82
17
CAPM-CNT1P
MOTOR DRIVE
CAPM-CNT2P 77
CAPM-CNT1M 85
MOTOR DRIVE
CAPM-CNT2M 86
– 22 –
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN
Q336 – 339
M1
M
(CAPSTAN)
CAPSTAN
Q340 – 343