NEC MH4500 - Manual (Page 78)

4-8 Upgrading Your System
7. Connect all the previously disconnected cables to the I/O panel on the back
of the chassis.
8. Install the access cover as previously described.
Upgrading the System Board
The following paragraphs provide procedures for upgrading the system board in
your system. Topics covered include:
T replacing the real-time clock battery
T installing and removing Pentium II Xeon processor cartridges
T installing and removing DIMMs.
!
CAUTION
Electrostatic discharge (ESD) can damage add-in boards
and other components. To prevent ESD damage; place
them on an antistatic surface. Modify the system board only
at an ESD workstation. Otherwise, wear an antistatic wrist
strap attached to chassis ground.
Replacing the Real-time Clock Battery
You may need to replace the real-time clock lithium battery as it ages. The
battery (Vendor Part #CR2032) is a commodity part available through many
vendors. Replace the battery as follows.
!
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.
!
CAUTION
Observe static precautions. Use an antistatic wrist strap.