Read Sony HCD-DR8AV / HCD-W900AV Service Manual online
HCD-DR8AV/W900AV
— 27 —
— 28 —
MAIN (2/2) SECTION
MAIN CONTROL
IC501 (2/2)
1
27
93
42
43
18
29
30
81
80
84
82
83
86
85
87
88
90
89
100
91
1
27
93
42
43
STK-POWER
PROTECT
FL OFF
STBY RELAY
HP MUTE
18
29
30
WAKE UP
IIC-CLK
IIC-DATA
93
43
42
1
27
29
30
18
POWER
ECO
STK POWER
PROTECT
HP MUTE
DATA
CLOCK
WAKE UP
IC933
M+7V (UNSW)
PL A+10V
7V
ST +10V
DR8AV ONLY
TC MOTOR+12V
FAN
1
3
1
3
+10V
REG
+12V
REG
IC931
IC932
FAN SWITCH
Q961, 962
+UNREG, 17V
FAN901
Q931
SWITCH
Q932
SWITCH
SWITCH
+7V
REG
1
3
A–7.5V
–V BIAS
2
3
–7V
REG
IC951
UN–10V
Q903
SWITCH
Q904
SWITCH
Q905
SWITCH
Q906
INV
1
3
+7V
REG
IC901
UN+10V
Q901
SWITCH
Q902
SWITCH
TC–7V
–7V
–7
(LED–7V)
A+7.5V
+V BIAS
TC–7V
–7V
–7
(LED+7V)
1
3
+5V
REG
IC911
LED 5V
LED 5V
D+5V UNSW
Q911
SWITCH
Q912
SWITCH
SWITCH
5V
AU D+5V
Q913
SWITCH
D+5V (SW)
A+5V (SW)
EVER +5V
Q921
SWITCH
CD D+5V SW
CD A+5V SW
(CD D+5V SW)
(CD A+5V SW)
(D+5V SW)
1
3
+5V
REG
IC921
Q914
SWITCH
POWER
SECTION
POWER
SECTION
I
DISPLAY
SECTION
SECTION
J
72
69
75
73
74
77
76
78
79
57
56
58
59
63
61
4
65
63
65
7
3
68
19
33
32
35
37
20
50
21
49
52
51
53
54
54
55
BIAS
REC-MUTE
ALC
EQ-H/N
PB-A/B
A-PLAY-SW
B-PLAY-SW
A-HALF
B-HALF
A-SHUT
B-SHUT
TC-RELAY
A-TRG
B-TRG
CAP-M-H/L
CAPM-CNT 2
CAPM-CNT 1
TC-MUTE
AMS IN
R/PB/PAS
NR-ON/OFF
NR-ON/OFF
HOLD
SENS
DISC-SENS
XLT
XRST
TBL-R
TBL-L
ENC 3/UP-SW
ENC 2/DISC-LED
SCOR
SQ-CLK
SQ-DATA
CD-DATA
CD-CLK
RDS-INT
STEREO
RDS-DATA
ST-MUTE
ST-CE
TUNED
ST-DOUT
ST-DIN
ST-CLK
36
H/P IN
PL-RELAY
5
CD-POWER
2
POWER
10
XC-IN
11
XC-OUT
13
X-OUT
15
X-IN
IC781
OPTIC
TRANSMITTING
D.OUT
BIAS ON/OFF
RM ON/OFF
ALC ON/OFF
NORM/HIGH
PB A/B
A PLAY
B PLAY
A-HALF
B-HALF/REC A/REC B
A SHUT
B SHUT
RELAY
A TRG
B TRG
CAP-M-H/L
CAPM-CNT 2
CAPM-CNT 1
LM ON/OFF
MS OUT
REC/PB/PASS
NR ON/OFF
HOLD
SENS
X-LAT
X-RST
SCOR
DOUT
SQ-CLK
SQ-DATA
CD-DATA
CD-CLK
RDS-INT
STEREO
RDS-DATA
ST-MUTE
ST-CE
TUNED
ST-DOUT
ST-DIN
ST-CLK
HP.SW
PL-RELAY
POWER
SECTION
H
BD (CD)
SECTION
A
DECK
SECTION
B
X501
32.768kHz
X502
16MHz
W900AV ONLY
L
16
(Page 30, 32)
POWER
SECTION
N
(Page 29, 31)
(Page 22)
(Page 24)
(Page 29, 31)
POWER
SECTION
P
(Page 31)
(Page 33)
(Page 29, 31)
FM/AM TUNER
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
• R CH : Same as L ch
4
TABLE SENSOR
IC202
LED DRIVER
Q201
M
M201
TABLE
MOTOR
S201
UP SWITCH
D201
DISC No.
MOTOR
DRIVER
DRIVER
IC201
FAN.DET
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