Cleaning And Working With Internal Devices - NEC Express5800 140Rd-4 User Manual

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Cleaning and Working with Internal Devices

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.
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.
Your server contains the lithium and NiMH batteries. Do not remove the battery. Danger of explosion if
the battery is incorrectly replaced. 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, contact your
service representative to replace only with the same or equivalent type. Do not disassemble the server to
replace or recharge the battery by yourself.
Disconnect all the power plugs before accessing inside the server, or connecting the peripherals.
The server has two power cords.
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.
Hot surface
Immediately after the server is powered off, its internal components such as hard disks are very hot.
Leave the server until its internal components fully cool down before installing/removing any component.
Make sure to complete board installation.
Always install a board firmly. An incompletely installed board may cause a contact failure, resulting in
smoking or fire.
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.
Do not touch any electrical components inside the server during the hot-swap replacement.
All power flows inside the server while the hot-swap replaceable components (PCI add-in cards, hard disk,
cooling fan, and power supply). Do not touch the electrical components inside the server to avoid an
electric shock.
WARNING
CAUTION