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Chapter 2 Remove Bezel, Cover, and Components
10
WARNING Before removing the cover, always disconnect the power
cord(s) and unplug telephone cables. Disconnect the power
cord(s) to avoid exposure to high energy levels that may cause
burns when parts are short-circuited by metal objects, such as
tools or jewelry. Disconnect telephone cables to avoid
exposure to shock hazard from telephone ringing devices.
Note that the power switch does not turn off the standby
power. Disconnect the power cord(s) to turn off standby
power. If the backlight on the LCD display is on, standby
power is still on.
CAUTION Never operate this HP NetServer without first installing the
covers and the front bezel. Operating the system without the
covers in place reduces critical cooling airflow over some
components, such as power supply modules, hard disk drives,
and processor modules. Operating the system without the
covers in place may result in failure of these components.
If you open the HP NetServer LH 3/3r or LH 4/4r while it is
operating, do not run it for more than 2 minutes. If you open
the HP NetServer LH 3000/3000r or LH 4000/4000r while it
is operating, do not run it for more than 60 minutes. Failure to
observe these precautions may result in thermal damage to the
NetServer.
CAUTION Wear a wrist strap and use a static-dissipating work surface
connected to the chassis when you remove or install
components.