Sony HCD-HDX285 Service Manual page 66

HCD-HDX285/HDX287WC/HDX585/HDX587WC/HDX589W/HDX685/HDX686W
– I/O Board –
IC4002 BH7868FS-E2
VCC1 1
S1 2
S2 3
C IN 4 BIAS
6dB
MUTE1 5 MUTE1
CV IN 6 CLAMP 6dB
SEL (CV/MIX) 7
Y IN 8 CLAMP 6dB
BIAS 9 BIAS
SEL (BIAS/CLAMP) 10
BIAS
PY/G IN 11
CLAMP
GND 12
PB/B IN 13 BIAS 6dB
MUTE2 14 MUTE2
PR/R IN 15 BIAS 6dB
VCC2 16
IC4003 TK11150CSCL-G
5
OVER HEAT &
OVER CURRENT
PROTECTION
CONTROL
–
CIRCUIT
+
BANDGAP
REFERENCE
1 2
66
6MHz
75Ω
LPF
S-DC OUT
S1/S2
L
+
6MHz
LPF
75Ω
H
6MHz
LPF
75Ω
H
12MHz
6dB
LPF
75Ω
L
12MHz
LPF
75Ω
12MHz
LPF
75Ω
4
3
32 C OUT
31 S-DC OUT
30 CV OUT
29 CV OUT SAG
28 GND
27 Y OUT
26 Y OUT SAG
25 GND
24 PY/G OUT
23 PY/G OUT SAG
22 GND
21 PB/B OUT
20 PB/B OUT SAG
19 GND
18 PR/R OUT
17 PR/R OUT SAG
IC4004, 4007 MC14052 BDR2
2Y0 1
2Y2 2
2-COM 3
2Y3 4
2Y1 5
INH 6
GND 7
GND 8
16 VCC
15 1Y2
14 1Y1
13 1-COM
12 1Y0
11 1Y3
10 A
9 B