User Guide10www.nec-computers.comPower Supply and CablesPower Supply■ The DC push-button on/off switch on the front panel does not turn off the systemAC power. +5vdc is present on the system board whenever the AC power cords areconnected between the system and an AC outlet. Before doing the procedures inthis manual, make sure that your system is powered off and unplug the AC powercords from the back of the chassis. Failure to disconnect power before openingyour system can result in personal injury and equipment damage.■ 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 haz-ardous voltages that can cause serious personal injury. A defective power supplymust be returned to your dealer.Cables■ In the U.S.A. and Canada, the power cord must be a UL-listed detachable powercord (in Canada, CSA-certified), type ST or SJT, 16 AWG, 3-conductor, providedwith a moulded-on NEMA type 5-15 P plug cap at one end and a moulded-on cordconnector body at the other end. The cord length must not exceed 9 feet (2.7meters).■ Outside the U.S.A. and Canada, the plug must be rated for 250 VAC, 10 ampminimum, and must display an international agency approval marking. The cordmust be suitable for use in the end-user country. Consult your dealer or the localelectrical authorities if you are unsure of the type of power cord to use in yourcountry. The voltage change occurs via a switch in the power supply.■ The detachable power supply cords are intended to serve as the disconnect devices.■ For PLUGGABLE EQUIPMENT, the socket-outlet shall be installed near theequipment and shall be easily accessible.■ 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 powercord if it gets damaged. Contact your dealer for an exact replacement.BatteriesLithium batteries can be dangerous. Improper handling of lithium batteries may resultin an explosion. Dispose of lithium batteries as required by local ordinance. Also see“Product Disposal” on page 11Chassis Cover Removal and ReplacementWhen servicing your system, make sure to replace the chassis cover and secure it withthe screws before plugging in the power cable and turning it on. The chassis coverensures proper airflow and cooling.
