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User’s Manual
Mini P4 Barebone Series
Appendix 1
JCMOS1: Clear CMOS Jumper
This jumper switch, JCMOS1, clears the CMOS Setup
configuration that is stored in the real-time clock’s CMOS
memory. If configuration becomes corrupted, or if the
CMOS settings are changed to an unsuitable configuration,
the motherboard may not work properly. JCMOS1lets you
delete the configuration data stored in CMOS memory
and reset the CMOS to the Optimized Defaults.
Follow the procedure below to clear CMOS memory.
1 Turn off and unplug the system and remove the
system housing cover.
2 Set JCMOS to the Clear CMOS position by placing the
jumper cap over pins 2 and 3 for one minute.
3 Return the jumper cap to Normal setting, pins 1 and 2.
4 Replace the system housing cover, plug in the system
and power on.
5 Run the CMOS Setup Utility and load the Optimized
Defaults. Make any custom settings you require.
6 Save the settings as you exit the program and restart
your computer.
Normal(Default)
Clear CMOS
1
2
3
1
2
3
