Solving System Problems 6-13
Battery Replacement
All system boards use a battery to maintain system configuration
information. Your system uses a coin-cell battery mounted on the system
board (see the following figure). If it fails to maintain system
configuration information, replace it with an identically rated battery from
the same manufacturer.
The battery can explode if it is incorrectly
replaced or improperly discarded. Use only the same battery or an
equivalent type recommended by the manufacturer when replacing the
battery.
Lithium acts as a catalyst when exposed to water and causes
spontaneous combustion on contact. Discard used batteries according to
the manufacturer’s instructions.
Removing the battery from the system board
causes the computer to lose system configuration information. Prior to
removing the battery, run the BIOS Setup utility (see
Chapter 3) and print out or write down your system configuration settings.
Then you can restore your system to its previous settings.
If you need to replace the battery, follow these steps:
1.
Turn off and unplug the computer and any external components
connected to it.
2.
Remove the system unit cover (see “System Unit Cover” in
Chapter 5). Observe all safety precautions when removing the cover.
3.
If necessary, slide the system board out of the chassis (see
“Removing the System Board” in Chapter 5).
4.
Locate the battery socket on the system board (see the following
figure).
Note
This procedure is for system boards using the 3-volt lithium
battery shown in the following figure.