Sony HCD-MC1 Service Manual page 28

HCD-MC1
AUDIO SECTION
HP101
(PLAYBACK)
PB EQ AMP
L-CH
(DECK A)
IC611
R-CH R-CH
HRPE101 (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
BIAS
TRAP
R-CH
RV441 RV341
REC BIAS (R) REC BIAS (L)
(DECK B) (DECK B)
REC BIAS
SWITCH
Q623
BIAS OSC
HRPE101 (2/2)
T621
(ERASE)
BIAS OSC
Q621, 622
16
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)
BIAS (N)
33
BIAS
BIAS (C)
32
CONTROL
BIAS (M)
CIRCUIT
31
RV301
PB LEVEL (L)
(DECK B)
17 19 15 16 18 20 22 23 24 25
S1004
(DECK A 120/70)
S1008
(DECK B 120/70)
4
B+
(A+7V)
97 99 94 93 92 90 89 88 87
95 96
S1003
(DECK A HALF)
S1002
S1001
(DECK B PLAY)
(DECK A PLAY)
— 31 —
DOLBY PASS
DOLBY NR
AMP
CIRCUIT
+
L.P.F. ALC
BUFFER
MAOUT
44 39
28 43 35 34
27
MSIN
RV301
AMS
REC LEVEL (L)
CIRCUIT
(DECK B)
MSOUT
26
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
SYSTEM CONTROLLER
IC501 (2/2)
98 28
B+
S1006 B+
(DECK B HALF)
S1005
(DECK A REC)
S1009
(DECK B REC)
PB OUT (L)
PB-L
40
EQ OUT
(L)
REC
36
EQ AMP
38
REC-L
RV1001
TAPE SPEED
(HIGH)
SL1 SL2
TRIGGER PLUNGER
DECK B
TRIGGER
Q335
PLUNGER DRIVE
(DECK B)
Q331, 332
84 83 82
CAPM-CNT1P
CAPM-CNT2P
CAPM-CNT1M
CAPM-CNT2M
— 32 —
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
A
TO/FROM
MAIN
BLOCK
(Page 29)
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
17
MOTOR DRIVE
77
Q336 – 339
M1
M
(CAPSTAN)
CAPSTAN
85
MOTOR DRIVE
86
Q340 – 343