Description Of Major Ics - JVC KS-FX490 Service Manual

4.1 AN80T05 (IC901) : Regulator
• Pin layout & Block diagram
Reference Voltage
Thermal
Protection
Pre
Drive
1 2
ILL MODE2 MODE1
10V
• Pin function
Pin No. Symbol
1 ILL 10V power supply for illumination.
2 MODE2 When 5V is input, becomes AM. and the antenna output is turned on.
3 MODE1 When 5V is input,becomes AM. and the output of FM is switched.
4 STB When 5V is input outputs to ILL,COM, and AMP. It is 0V usually.
5 VDD 5.6V power supply.
6 AMP Power supply supply to remote amplifier
7 VCC Back up. connects with ACC with it.
8 ANT Power supply supply to auto antenna.
9 COM 8.7V power supply.
10 AM The power supply of 8.7V to AM.
11 FM The power supply of 8.7V to FM.
12 GND Ground
SECTION 4

Description of major ICs

ASO & Peak
Current Protection
AMP
Pre
Out
Drive
3 4 5
STB VDD AMP
5.6V
Function
Pre
Drive
AMP
Out
6 7 8
VCC ANT COM
8.7V
Pre
Drive
Drive
9 10 11 12
AM FM GND
8.7V 8.7V
Pre
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