JVC KS-FX321 Service Manual page 17

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4.3 AN80T05LF (IC781) : Regulator 3 7 63 1515 0
• Pin layout & Block diagram
Reference Voltage
Thermal
Protection
Pre
Drive
1 2
ILL MODE2 MODE1
10V
• Pin function
TE
Pin No. Symbol
L 13942296513
1 ILL
2 MODE2
3 MODE1
4 STB
5 VDD
6 AMP
7 VCC
8 ANT
9 COM
10 AM
11 FM
12 GND
4.4 UPC1228HA (IC901) : Head amp
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ASO & Peak
Current Protection
Pre
Drive
3 4 5
STB VDD
5.6V
10V power supply for illumination.
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,COMand AMP. It is 0V usually.
5.6V power supply.
Power supply supply to remote amplifier
Back up. connects with ACC with it.
Power supply supply to auto antenna.
8.7V power supply.
The power supply of 8.7V to AM.
The power supply of 8.7V to FM.
Ground
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2 9
8
AMP
Pre
Out
Drive
AMP
Out
6 7 8
AMP VCC ANT
Q Q
Function
3 6 7 1 3 1 5
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.
9 4 2 8
Pre
Drive
9 10 11
COM AM FM GND
8.7V 8.7V 8.7V
0 5 8 2 9 9 4 2 8
m
KS-FX321
9 9
Pre
Drive
12
9 9
(No.49771)1-17