Description Of Major Ics - JVC KS-FX202 Service Manual

KS-FX202

Description of major ICs

AN80T05LF (IC781) : Regulator
1.Terminal layout & Block diagram
Reference Voltage
Thermal
Protection
Pre
Drive
1 2
ILL MODE2 MODE1
10V
2.Pin function
Pin
Symbol
No.
1 NC
2 TUNER
3 FM/AM
4 POWER CNT
5 5V
6 VSW 14VOUT
7 MEMORY
8 NC
9 9V
10 AM
11 FM
12 GND
1-16
ASO & Peak
Current Protection
AMP
Pre
Out
Drive
3 4 5 6
STB VDD AMP
5.6V
Non connect
When 5V is input,becomes AM. and the antenna output is turned on.
When 5V is input,becomes AM. and the output of FM is switched.
When 5V is input, outputs to ILL,COM,and AMP. It is 0V usually.
5.6V power supply.
Power supply supply to remote amplifier
Back up. connects with ACC with it.
Non connect
8.7V power supply.
The power supply of 8.7V to AM.
The power supply of 8.7V to FM.
Ground
Pre
Drive
AMP
Out
7 8 9
VCC ANT COM
8.7V
Function
Pre
Drive
Pre
Drive
10 11 12
AM FM GND
8.7V 8.7V