NEC NEC Express5800 Series, Online Service Manual

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Using This Guide xiii
Safety Notices
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Caution:
To reduce the risk of electric shock which could cause personal injury, follow all safety
notices. The symbols shown are used in your documentation and on your equipment to indicate
safety hazards.
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Warning:
Lithium batteries can be dangerous. Improper handling of lithium batteries may result
in an explosion. Dispose of lithium batteries as required by local ordinance or as normal waste if no
local ordinance exists.
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Warning:
The detachable power supply cord is intended to serve as the disconnect device.
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Warning:
This equipment has a 3-wire, grounded power cord. To prevent electrical hazards, do
not remove or defeat the ground prong on the power cord. Replace the power cord if it gets
damaged. Contact your dealer for an exact replacement.
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Warning:
The DC push-button on/off switch on the front panel does not turn off the system AC
power. Also, +5vdc is present on the system board whenever the AC power cord is connected
between the system and an AC outlet. Before doing the procedures in this manual, make sure that
your system is powered off and unplug the AC power cord from the back of the chassis. Failure to
disconnect power before opening your system can result in personal injury and equipment damage.
In the U.S.A. and Canada, the power cord must be a UL-listed detachable power cord (in Canada, CSA-
certified), type ST or SJT, 16 AWG, 3-conductor, provided with a molded-on NEMA type
5-15 P plug cap at one end and a molded-on cord connector body at the other end. The cord length
must not exceed 9 feet (2.7 meters).
Outside the U.S.A. and Canada, the plug must be rated for 250 VAC, 10 amp minimum, and must
display an international agency approval marking. The cord must be suitable for use in the end-user
country. Consult your dealer or the local electrical authorities if you are unsure of the type of power
cord to use in your country. The voltage change occurs via a switch in the power supply.
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Warning:
Under no circumstances should the user attempt to disassemble the power supply. The
power supply has no user-replaceable parts. Inside the power supply are hazardous voltages that
can cause serious personal injury. A defective power supply must be returned to your dealer.
Safety Notices for Users Outside of the U.S.A. and Canada
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PELV (Protected Extra-Low Voltage) Integrity:
To ensure the extra-low voltage integrity of the
equipment, connect only equipment with mains-protected electrically-compatible circuits to the
external ports.
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Remote Earths:
To prevent electrical shock, connect all local (individual office) computers and
computer support equipment to the same electrical circuit of the building wiring. If you are unsure,
check the building wiring to avoid remote earth conditions.
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Earth Bonding:
For safe operation, only connect the equipment to a building supply that is in
accordance with current wiring regulations in your country. In the U.K., those regulations are the
IEE.