NEC MH4000, User Manual

Page: 111 / 204

5-27
Upgrades and Options
Replacing the Battery
Notice: Observe static precautions. Use an antistatic
wrist strap.
1. Power off the system and remove the left side panel
as described earlier in this chapter.
2. To gain access to the battery, remove the processor
boards, refer to Removing the Processor Board
earlier in this chapter.
3. Using your finger nail or a small pointed tool,
gently push to the left on the right edge of the
battery and pry the battery out of its socket. Refer
to Figure 5-10 for the socket location.
4. Orient the new battery over its socket so the plus
(+) sign on the battery is facing up.
5. Carefully insert the left side of the battery into the
socket connectors and gently push the battery into
the socket.
6. Press down on the battery until it is firmly seated
in its socket.
7. Reinstall the processor boards that were removed in
step2, refer to Installing the Processor Board
earlier in this chapter.
8. Replace the side panel and turn on the system.
9. Run the BIOS Setup or SCU to restore configuration
settings to the real-time-clock.