Sony KV-13FM13 Service Manual page 26

A BOARD IC BLOCK DIAGRAMS
A BOARD: IC401 TDA7057AQ/N2
3
1
5
7
Input 1
DC Volume Control 1
TEMPERATURE
STABILIZER
V
REF
Input 2
DC Volume Control 2
Signal
n.c. Ground
2 6
A BOARD: IC502 TDA8172
V
P
4
I + i
+
1
–
I – i
PROTECTION
I + i
+
2
–
I – i
Power Power
Ground 1 Ground 2
12
9
— 26 —
13
Positive Output 1
11
Negative Output 1
10
Positive Output 2
8 Negative Output 2
KV-13FM13 / 13FM14