Sony KV-21FE13 Service Manual page 26

A BOARD IC VOLTAGE LIST
IC401 IC406
pin volt pin
1 0.6 1
2 N/C 2
3 2.4 3
4 14.3 4
5 2.4 5
6 GND 6
7 0.6 7
8 6.9 8
9 GND IC501
10 6.9 pin
11 6.9 1
12 GND 2
13 6.9 3
IC405 4
pin volt 5
1 6.0 6
2 0.1 7
3 6.1 8
4 0.1 IC502
5 6.1 pin
6 9.0 1
7 5.3 2
8 GND 3
A BOARD IC BLOCK DIAGRAMS
IC401: TDA7057AQ/N2
Input 1
3
DC Volume Control 1
1
Input 2
5
DC Volume Control 2
7
n.c.
2
4 -13.9
volt 5 0.2 pin
6.0 6 14.3
0.1 7 2.1
6.1 IC601
0.1 pin volt
6.1 1 -31.8 pin
9.0 2 -32.7
5.3 3 53.2
GND 4 -23.8
5 -32.7
volt IC602
0.2 pin volt
3.7 1 135.9
2.5 2 123.4
GND 3 GND
9.5 IC603
10.1 pin volt
0.1 I 13.3
14.0 G GND
O 8.9
volt 4 13.3
2.1
14.0
-12.6
+
–
TEMPERATURE
STABILIZER
V PROTECTION
REF
+
–
Signal
Ground Ground 1
6
— 26 —
IC604 TU101
volt pin
1 13.3 1
2 5.0 2
3 GND 3
IC2001 4
volt 5
1 5.0 6
2 5.0 7
3 GND 8
9
All voltages are in V
10
11
12
13
V
P
4
I + i
1
I – i
I + i
2
I – i
Power Power
Ground 2
12
9
KV-21FE13/ 21FE13C/ 21FM13/ 21FM13C
14 N/C
volt 15 N/C
8.6 16 4.5
30.7 17 4.7
5.1 18 4.4
4.9 19 5.0
4.9 20 5.0
GND 21 0.3
5.5 22 0.0
N/C 23 N/C
8.9 24 0.0
4.1 25 N/C
GND 26 4.5
N/C 27 4.5
N/C
All voltages are in V
13
Positive Output 1
11
Negative Output 1
10
Positive Output 2
8 Negative Output 2