NEC NEC Express5800 Series, Онлайн руководство по обслуживанию

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4-2 Upgrading Your System
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.
CAUTION
The server management logic on your system board monitors and logs system
voltage changes. When powering down your system you may experience a
1–5 second delay from the time you press the push-button power on/off switch on
the front panel and your system powering down. This is normal system operation
and is required by the server management logic.
CAUTION
Operating your system with the side panels removed can damage your system
components. For proper cooling and airflow, always replace the side panels before
powering on your system.
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.
Electronic devices can be easily damaged by static electricity. To prevent damage, keep them in
their protective packaging when they are not installed in your system.