Read Sony HCD-DR8AV / HCD-W900AV Service Manual online
HCD-DR8AV/W900AV
— 23 —
— 24 —
DECK SECTION
IC611
R CH
HP101
PB HEAD
(DECK A)
(DECK A)
L
R
RV311
PLAYBACK
LEVEL
DECK A
IC601
R CH
L
R
RV301
PLAYBACK
LEVEL
DECK B
3
1
IC602
4
REC/PB
EQOUT
REC BIAS
BIAS OSC
T621, Q621, 622
ERASE HEAD
ERASE BIAS
46
48
B IN
A IN
16
PB-A/B
EQIN
38
36
RV301
REC LEVEL
39
RECOUT
BIAS SW
C
N
70
120
DOLBY
TYPE B
+7.5V
Q623
LIN
43
PB
24
18
20
22
40
25
PB OUT
LM ON/OFF
BIAS ON/OFF
RM ON/OFF
ALC ON/OFF
TC PB L
TC REC L
PB A/B
NORM/HIGH
REC/PB/PASS
REC/PB/PASS
BIAS ON/OFF
RM ON/OFF
RM ON/OFF
15
ALC ON/OFF
RELAY
16
B
MAIN
SECTION
LM ON/OFF
NORM/HIGH
PAS
DOL
P
R
REC/PB HEAD
(DECK B)
DOLBY NR
IC301
IC301
DOLBY NR
HRPE101
RV341
REC
BIAS
32 33
23
NR ON/OFF
NR ON/OFF
17
S1004
A CrO
2
S1008
B CrO
2
19
A 120/70
B NORM/CROM/METAL
M
CAP MOTOR
CONTROL
Q336-343
CONTROL
Q336-343
SPEED
CONTROL
Q1001
SWITCH
Q335
RV1001
HIGH
SPEED
RV1002
NORMAL
SPEED
M1
CAPSTAN
MOTOR
CAPM CNT2
CAP M H / L
CAPM CNT1
REEL
DETECT
IC1001
A SHUT
B SHUT
REEL
DETECT
IC1002
S1001 (A PLAY)
+5V
S1002 (B PLAY)
A PLAY
B PLAY
A HALF
B HALF/REC A/REC B
S1003
(A HALF)
+5V
+5V
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
(Page 25,
26, 27)
• R CH : Same as L ch
• SIGNAL PATH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
• SIGNAL PATH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
R CH
CN301
3
1
28 27
26
MS
MS OUT
B TRIG
A TRIG
TRIGGER
MOTOR
CONTROL
Q331-334
MOTOR
CONTROL
Q331-334
A DECK/
B DECK
PLUNGER
B DECK
PLUNGER
• PLUNGER SOLENOID is supplied
as the MECHANICAL BLOCK ASSY.
as the MECHANICAL BLOCK ASSY.
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