JVC KS-FX202 Service Manual page 21

HA13158A (IC981) : Power amp
1. Pin layout
1
2. Block diagram
2
STBY
1
IN1
11
IN2
13
IN3
IN4
23
10
UPC1228HA(IC901):Head amp
1.Terminal layout & Block diagram
AMP1
1 2 3 4
~ 23
14 18
PVCC2
INVCC
INPUTBUFFER1
INPUTBUFFER2
INPUTBUFFER3
INPUTBUFFER4
MUTE
PROTECTOR (ASO
SURGE, TSD)
12 22
AMP2
5 6 7 8
6
PVCC1
3
+
4
AMP1
-
5
7
+
8
AMP2
-
9
15
+
16
AMP3
-
17
19
+
20
AMP4
-
21
TAB
2.Pin function
Pin No. Electrical connection
1 Input 1
2 Negative feed back 1
3 Output 1
4 Power supply; +Vcc
5 Ground
6 Output 2
7 Negative feed back 2
8 Input 2
KS-FX202
1-21