How To Replace The Cmos Battery - NEC POWERMATE CT User Manual

How to Replace the CMOS Battery

The system board uses a CMOS battery to maintain system configuration
information. The battery is a coin-cell battery mounted on the system
board (see the following figure). If the battery fails to maintain system
configuration information, replace it with an identically rated battery from
the same manufacturer.
replaced or improperly discarded. Use only the same type 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.
causes the system 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
the system to its previous settings.
If you need to replace the battery, follow these steps.
Turn off and unplug the system and any external components
1.
connected to it.
2. Remove the system cover (see "Removing the Cover" in Chapter 4).
Observe all safety precautions when removing the cover.
Locate the battery on the system board (see the following figure).
3.
Remove any expansion boards that might be blocking access to the
4.
battery (see "Removing an Expansion Board" in Chapter 4).
5-10 Solving System Problems
The battery can explode if it is incorrectly
Removing the battery from the system board