Upgrading Your System; General Information; Static Precautions - NEC Express5800 120Li User Manual

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User Guide

Upgrading Your System

General Information

The DC push-button on/off switch on the front panel does not
turn off completely the system AC power. Also, +5vdc is present
on the motherboard whenever the AC power cord is connected
between the system and an AC outlet. Before doing the proce-
dures 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.
Operating your system with the right side door removed can
damage your system components.
For proper cooling and airflow, always replace the right side
door before powering on your system.
Avoid burns. If the system has been running, any installed pro-
cessor and heat sink on the processor board(s) will be hot.
To avoid the possibility of a burn, be careful when removing or
installing components that are located near processors.
Contact your sales representative or dealer for a list of approved optional peripheral
devices.

Static Precautions

An electrostatic discharge (ESD) can damage disk drives, option boards, and other
components. You can provide some ESD protection by wearing an antistatic wrist strap
attached to chassis ground when handling system components.
Warning
Caution
Warning
109
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