Panasonic JS-170FR Series Service Manual page 28

Jumper pins
Jumper numbers and pin numbers are printed on the main board. Direction of the jumpers follow the direction of printed
numbers.
1 4
2 3
Pin
JP1 VGAC
1-4 Short, 2-3 Short : 640x480 (Factory setting)
1-4 Short, 2-3 Open : 1024x768
1-4 Open, 2-3 Short : 800x600
1-4 Open, 2-3 Open : 1280x1024
This jumper sets the type of connected LCD to VGA controller.
JP2 Power fail interrupt
1-2 Short : NMI (Factory setting)
2-3 Short : SMI
This jumper defines the type of interrupt by power fail.
JP3 COM3 IRQ
1-2 Short : IRQ11 (Factory setting)
2-3 Short : IRQ4
This jumper sets IRQ (interrupt) number used by COM3 UART.
JP4/5/6 Control signal of COM3
This jumper defines functions of some control lines on 8-pin modular connector of COM3.
See table below for combination of pins.
JP7 CPU I/O voltage
1-2 Short : +2.5V (Factory setting)
2-3 Short : Reserved.
JP8 CPU GTL voltage
Short : GTL=CORE voltage (Factory setting)
Open : Reserved.
JP9 Power control
Short : Boot by main power switch
Open : Boot by front power switch (Factory setting)
1 2
1 2 3
Explanation
1-18