NEC EXPRESS5800/140He, Service Manual

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- vii -
Cleaning and Working with Internal Devices
WARNING
Do not disassemble, repair, or alter the server.
Never attempt to disassemble, repair, or alter the server on any occasion other than
described in this manual. Failure to follow this instruction may cause an electric
shock or fire as well as malfunctions of the server.
Disconnect all the power plugs before accessing inside the server, or connecting
the peripherals.
Make sure to power off the server and disconnect the all power plugs from a power
outlet before cleaning or installing/removing internal optional devices. Touching any
internal device of the server with its power cords connected to a power source may
cause an electric shock even of the server is off-powered.
Disconnect all the power plugs from the outlet occasionally and clean the plug with
a dry cloth. Heat will be generated if condensation is formed on a dusty plug, which
may cause a fire.
Do not look into the CD-ROM drive.
A laser beam used in the CD-ROM drive is harmful to the eyes. Do not look into or
insert a mirror into the drive while the drive is powered. If a laser beam is caught in
your eyes, you may lose your eyesight (the laser beam is invisible).
Do not remove the lithium and NiMH batteries.
The server contains the lithium and NiMH batteries. Do not remove the battery.
Placing the battery close to a fire or in the water may cause an explosion.
When the server does not operate appropriately due to the dead lithium and NiMH
batteries, replace only with the same or equivalent type described later in this
manual. Danger of an electric shock due to short-circuit if the battery is incorrectly
replaced.
CAUTION
Hot surface
Immediately after the server is powered off, its internal components such as hard
disk drives are very hot. Leave the server until its internal components fully cool
down before installing/removing any component.
Make sure to complete installation.
Always install a power cable, interface cable, and/or option board firmly. An
incompletely installed component may cause a contact failure, resulting in smoking
or fire.
Some components in the server must be replaced due to expiration of service life
(e.g., fan module and power supply unit). To use the server successfully, regularly
replace these components.
Protect the unused connectors with the protective cap.
The unused power supply cable connectors are covered with the protective cap to
prevent short circuits and electrical hazards. When removing the power supply cable
connector from the internal devices, attach the protective cap to the connector.
Failure to follow this warning may cause a fire or an electric shock.