Sony HCD-CPX11 Service Manual page 47

– PRE AMP Board –
IC101 LC75342
30 29
CONTROL
CIRCUIT
CCB LOGIC
INTERFACE CIRCUIT
CONTROL
CIRCUIT
1 2 3 4
IC251 BA5947FM
19
CH4OUTR D
20
CH4OUTF D
21
CH3OUTF D
19k
22
CH3OUTR D
10k
Vref
POW
VCC
23
POWVCC
(ch3, 4)
50k 50k
50k 50k
24 POW
MUTE
VCC
50k 50k
25
GND
GND 26
PREGND 27
28
CT
29
CH3RIN
CH3FIN 30
100k
CH4IN 31
PIN3
32
CH4CAPA
10k
50k
33
OUTVREF
34
DPOUT
Pre
TREVCC 35
Vcc
36
NC
28 27 26 25
+
–
5 6
CH1PUTF
D 18
CH1OUTR
D 17
D 16 CH2OUTF
PIN26
6.5k
D 15 CH2OUTR
POW
VCC
14 POWVCC
(ch1, 2)
13 CNF4
12
GND
Vref
C-M
11
10 C-P
9
VG
8 CH2RIN
7
CH2FIN
6 CH1RIN
5 CH1FIN
SW
4 SW
3
OPIN+
2
OPIN-
NC
1
24 23 22 21
+
+
–
–
7 8
HCD-CPX11
20 19 18 17
+
–
9 10 11 12 13 14
16
15
47