Removing The System Unit Cover - NEC POWERMATE OFFICE 2513 Service Manual

3-2 Option Installation
Static electricity and improper installation procedures can damage computer components.
Protect computer components by following these safety instructions.
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Avoid carpets in cool, dry areas. Leave an option, such as a board or chip, in its
anti-static packaging until ready to install it.
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Dissipate static electricity before handling any system components (boards, chips,
etc.) by touching a grounded metal object, such as the system's unpainted metal
chassis.
If possible, use anti-static devices, such as wrist straps and floor mats.
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Always hold a chip or board by its edges. Avoid touching the components on the
chip or board.
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Take care when connecting or disconnecting cables. A damaged cable can cause a
short in the electrical circuit. Misaligned connector pins can cause damage to
system components at power-on.
When installing a cable, route the cable so it is not pinched by other components
and is out of the path of the system unit cover. Prevent damage to the connectors
by aligning connector pins before you connect the cable.
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When disconnecting a cable, always pull on the cable connector or strain-relief
loop, not on the cable.

REMOVING THE SYSTEM UNIT COVER

The following subsections describe how to remove the system unit cover from the system.
1. Turn off and unplug the system unit.
Disconnect the keyboard, mouse, monitor, and any other device (such as a
2.
printer) connected to the back of the system.
CAUTION: Electrostatic discharge can damage
computer components. Discharge static
electricity by touching a metal object before
removing the system unit cover.
WARNING: Before removing the system unit
cover, turn off the power and unplug the system
power cable. Power is removed only when the
power cable is unplugged.