NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual page 150

4-18 Maintenance and Troubleshooting
3. Locate the battery socket on the system board (see Figure 4-2).
Carefully lift the battery from the socket tabs and out of the socket.
4.
5. With the positive (+) side facing up, press the new battery into the socket.
Replace the system unit cover.
6.
Connect external peripherals and power cables.
7.
8. Run Setup to reconfigure the system parameters (see Section 2).
Figure 4-2 Battery Socket Location
Figure 4-3 Battery Removal