NEC Express5800 120Ld, User Manual

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Upgrading Your System 4-7
Modifying the System Board
The following sections provide procedures for upgrading and configuring the
system board in your system. Topics covered include:
!
Replacing the real-time clock battery
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Removing and Installing a Pentium processor
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Installing or removing DIMMs.
!
CAUTION
Electrostatic discharge (ESD) can damage add-in boards
and other components; 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 battery because of its life span. The
battery (Vendor Part #CR2450) is a commodity part available through many
vendors. Notice the plus (+) sign on the battery. This sign will assist you in
correctly positioning the battery 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
!
CAUTION
Observe static precautions. Use an antistatic wrist strap.