NEC DIRECTION L - SERVICE, Руководство по обслуживанию

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3-2 Option Installation
PRECAUTIONS
Take care when working inside the system and when handling computer components. Avoid
electric shock or personal injury by observing the following warning.
WARNING: Before removing the access cover,
turn off the power and unplug the system power
cable. Power is removed only when the power
cable is unplugged.
Static electricity and improper installation procedures can damage computer components.
Protect computer components by following these safety instructions.
CAUTION:
Electrostatic discharge can damage
computer components. Discharge static
electricity by touching a metal object before
removing the access cover.
„
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.
„
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.
„
Always hold a chip or board by its edges. Avoid touching the components on the
chip or board.
„
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.
„
When disconnecting a cable, always pull on the cable connector or strain-relief
loop, not on the cable.