Read Sharp 21KF-80 (serv.man9) Service Manual online
25
21KF-80H
AN7523 (IC302, IC303)
Block Diagram
Pin Descriptions
Note: Do not apply voltage or current to NC pin from outside
AN5522 (IC501)
Block Diagram
Pin Descriptions
1
2
3
4
5
6
7
8
9
V
CC
Output
GND
Output
Standby
Input
GND
N.C.
V
olume
Pin No.
Description
1
Vcc
2
Ch Output (+)
3
GND
4
Ch Output (-)
5
Standby
6
Ch Input
7
GND
8
N.C
9
Volume
Pin No.
Pin Name
1
Inverting Input
2
Power Supply
3
Pump-up Output
4
GND
5
Vertical Output
6
Vertical Output Power Supply
7
Non-inverting Input
Non-inverting Input
Output Vcc
Output
GND
Pump Up Out
Vcc
Inverting Input
1
2
3
4
5
6
7
Pump Up
Thermal Protection
Amp
+
-
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