NEC MH4000, User Manual

Page: 108 / 204

5-24
Upgrades and Options
Installing Video Memory
Notice: Observe static precautions. Use an antistatic
wrist strap.
1. If the system is on, power off the system and remove
the left side panel as described earlier in this
chapter.
2. To gain access to the video sockets, remove the
memory board, refer to Removing the Memory Board
earlier in this chapter.
3. Align the beveled edge of the video memory module
with the notched corner of the video memory socket.
Refer to Figure 5-8 for the video memory socket
location.
4. Press the video memory module down firmly until it
is fully seated in its socket.
5. Reinstall the memory board that was removed in
step2, refer to Installing the Memory Board earlier
in this chapter.
6. Replace the side panel and power on the system.
Non-Volatile Memory
You may need to replace the non-volatile memory
because of its internal integral lithium battery life
span. Contact your sales representative or dealer for a
list of approved devices. Its located on your system
board as shown in Figure 5-9. Notice the dot on the
chip. This dot will assist you in correctly positioning
the chip on the system board.
CAUTION: Danger of explosion if battery is incorrectly
replaced. Replace only with same or equivalent type
recommended by manufacturer. Dispose of lithium
batteries as required by local ordinance or as normal
waste if no local ordinance exists. Do not expose the
component to excessive heat or fire. Keep all batteries
away from children.