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4-12 Maintenance and Troubleshooting
CMOS Battery Replacement
Remove the 3-volt lithium battery from the system board as follows.
1.
Turn off and unplug the system unit and any external options connected to the
system.
!
CAUTION:
Removing the battery from
the system board causes the computer to lose
system configuration information. If possible, run
Setup and record the system configuration
settings before removing the battery. Use that
information to restore the system after replacing
the battery.
2.
Remove the system access cover.
3.
Locate the battery and its socket on the system board (see Figure 4-2).
Figure 4-2 Locating the Battery
4.
Use fingers to carefully pull the battery up until it is clear to slide the battery out
of the socket.