NEC Express5800/140Hb, 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 cords are intended to serve as the disconnect
devices.
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Warning: This equipment has a 3-wire, grounded power cords. To prevent electrical
hazards, do not remove or defeat the ground prong on the power cords. Replace a 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
cords are 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
cords 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.