Audio Board - Sony SCD-XB940 Service Manual

– AUDIO Board –
IC309 TC7W74F
8 7 6 5
S R Q
C D Q
1 2 3 4
IC401, 501 CXA8042AS
1
I01+
2
I02–
3
NC
4
I01–
I02+ 5
NC 6
7
VCC2
8
C2
C1 9
VCC1 10
REFERENCE
VREF
11 VOLTAGE
CIRCUIT
12
VCNT
GND1 13
RIREF 14
28
IN2–
27 IN2+
26 NC
25
IN1+
SWITCHING
24 IN1–
CIRCUIT
23 NC
22 C4
21 C3
GND2
20
VEE2
19
CONSTANT
18 VEE1
CURRENT
17 C6
CIRCUIT
16 C5
CONTROL
CIRCUIT 15
CIREF
35