NEC HX4500 manual Replacing the Non-Volatile Memory

2.Align the beveled edge of the video memory module with the notched corner of the video memory socket. See Figure 4-4 for the video memory socket location.

3.Press the video memory module down firmly until it is fully seated in its socket.

4.Replace the top cover and power on the system.

Replacing the 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. The battery is located on your system I/O board (see Figure 4-5). Notice the dot on the chip. Use the dot to correctly position the chip on the system board.

!CAUTION

Danger of explosion if the 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.

Replace the non-volatile memory as follows.

Note: Observe static precautions. Use an antistatic wrist strap.

1.Power off the system and remove the top cover as described earlier.

2.If the non-volatile memory is secured by a tie-wrap, remove the tie-wrap. Using a IC removal tool or a small pointed tool, gently pry up each end of the non-volatile memory and pull it straight up out of its socket (see Figure 4-5).

3.Orient the new chip over its socket so the dot is properly oriented. Carefully insert the chip into its socket connectors.

4.Press down on the chip until it is firmly seated in its socket.

5.Replace the side panel and turn on the system.

6.Run the BIOS Setup to restore proper configuration settings.

4-12 Upgrading Your System