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www.nec-computers.com
Replacing the Battery
All motherboards use a battery to maintain system configuration information. If it fails
to maintain system configuration, replace it with an identically rated battery from the
same manufacturer.
Replace the battery as described below:
Caution
Removing the battery from the motherboard causes the com-
puter to lose system configuration information. Before removing
it, run Setup and record the system configuration settings.
Use this information to restore the system after replacing the
battery.
1. Turn off and unplug the system unit and any external options connected to the
system.
2. Remove the right side door. See “
Removing the Right Side Door” on page 114.
3. Locate the battery on the motherboard. See “Motherboard” on page 22.
4. Note that the “+” side faces the circular-shaped cut-out. Pull on the battery to
disengage it from the tabs.
Warning
The battery may explode if it is incorrectly replaced or improp-
erly discarded.
Use only an identically rated battery from the same
manufacturer.
5. With the positive (+) side facing the circular cut-out (away from the tabs),
press the new battery into the socket.
6. Replace the right side door. See “
Replacing the Right Side Door” on page 115.
7. Connect the external peripherals and the power cables.
8. Run Setup to reconfigure system parameters.
131


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