Advantech PPC-L127T, User Manual

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25 Chapter 4
4.2 CMOS Clear for External RTC (JP1)
This jumper is used to erase CMOS data and reset system BIOS informa-
tion.
The procedure for clearing CMOS is:
1.
Turn off system.
2. Short pin 2 and pin 3.
3. Return jumper to pins 1 and 2.
4. Turn on the system. The BIOS is now reset to its default setting.
Warning! To avoid damaging the computer, always turn off
the power supply before setting “Clear CMOS”.
Set the jumper back to “Normal operation” before
turning on the power supply.
Table 4.2: CMOS clear (J1)
* Normal operation Clear CMOS
* Default setting
3 1 2 3 1 2