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General Procedure to Change Jumper Setting
The following short procedure for changing a configuration setting is the same for most of
the jumper functions:
1
Observe the safety and ESD precautions at the beginning of this manual.
2
Turn off all connected peripherals, turn off system power, and disconnect the AC
power cord.
3
Remove the cover. You do not need to remove the server board from the chassis,
and you probably do not need to remove any add-in boards.
4
Locate the configuration jumpers at the edge of the server board toward the front of
the system.
5
Move the jumper to pins specified for the desired setting.
6
Reinstall the cover, connect the power cord, and turn on the system for the change
to take effect.
7
You may need to repeat these steps to move the jumper back to its original setting,
depending on the jumper function.
CMOS Jumper
The jumper at pins 1 and 2 controls whether settings stored in CMOS nonvolatile
memory (NVRAM) are retained during a system reset.
Use the following procedure to restore the system's CMOS and RTC to default values:
1
See "General Procedure to Change Jumper Setting" above.
2
Short the CMOS jumper on 1 and 2 (the Clear CMOS memory position).
3
Reinstall the cover for your safety and connect the power cord to the system.
4
Turn the system on. Wait for POST to complete and for the messages "NVRAM
cleared by jumper" and "Press F2 to enter Setup" to appear. This automatically
reprograms CMOS and RTC to their default settings.
5
Enter Setup and make any changes necessary (for example, changing the boot
device). Press F10 to save the new Setup configuration and exit Setup.
6
Turn the system off and disconnect the power cord from the system.
7
Remove the cover.
8
Remove the jumper from pin 1 and 2 (the Protect CMOS memory position).
9
Reinstall the cover and connect the power cord to the system.
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