User`s manual

Jumpers and Connectors • 25

2.3 PXD-3710/3710F Jumpers Setting

The PXD-3710/3710F is designed for maximum flexibility with as few

jumpers as possible. Most of the configuration options can be selected

through the BIOS menu. However, some options still need to be configured

by jumpers.

Note. There is no jumper for front side bus (FSB) or CPU frequency selection.

The FSB and CPU frequency are set by auto-detection.

The PXD-3710/3710F is assembled with 3 boards including a main board

and two daughter boards. The Table 14 lists the functions of the jumpers on

the PXD-3710/3710F. Please also refer to the figures in the Section 2.1 for

the location of the jumpers.

Description Location Name

Clear CMOS

PXD-3710/3710F

Main board

JP1

CF1 Master/Slave Selection DB-3710L2 CN7

COM1 RS232/422/RS485

Selection

DB-3710L3 JP1~3

Table 14: Jumpers Definition on the PXD-3710/3710F

2.3.1 Clear CMOS

RTC status PXD-3710 JP1

Normal operation

1-2 (Default)

Clear CMOS

2-3

Table 15: Clear CMOS RTC RAM

The CMOS RAM data for real time clock (RTC) contains the date / time and

password information. The CMOS is powered by the button cell-battery when

the system is power-off.

To erase the CMOS RAM data:

1. Unplug the PXD-3710/3710F.

2. Short pins 2 and 3 of JP1. Then reinstall the jumper back to

normal location.

3. Plug the PXD-3710/3710F back to the chassis. Turn the power

on.

3 2 1