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Replacing the CMOS battery
If the server clock does not keep time or the settings in the BIOS Setup utility are not saved
when you turn off the server, replace the CMOS battery with an equivalent battery.
To replace the battery:
1 Print the appendix for “BIOS Settings” on page 83.
2 Open the BIOS Setup utility. For instructions, see “Opening the BIOS Setup utility”
on page 58.
3 Record the BIOS settings on your printout, then close the utility.
4 Turn off your server, then follow the instructions in “Preventing static electricity
discharge” on page 29.
5 Follow the instructions in “Opening the server case” on page 30.
6 Locate the old battery on the system board and note its orientation. You will need
to install the new battery the same way.
7 Push the battery retention clip away from the battery until the battery pops up, then
remove the old battery. You can use a screwdriver to help lift the battery.
8 Make sure that the positive (+) side of the new battery is facing up, then press the
new battery into the socket until it snaps into place.
Warning Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of or recycle
used batteries by taking them to a hazardous waste facility.
Follow all local regulations for correct battery disposal.
CMOS
battery