UserÆs Guide and Technical UserÆs Guide - HP Carrier Grade Server cc3300

HP cc3300 Carrier Grade Server Product Guide
Upgrading the Hardware 71
WARNINGS
Power Button: Shutting down the server with the Power button on the
front of the chassis DOES NOT remove all power from the system. To
remove all power from system, you must also unplug/disconnect the
power cord from the system. Unplugging/disconnecting the power cord
from the system removes the +12 Volt standby power that is present
when the server is powered down.
Hazardous conditions, power supply: Hazardous voltage, current,
and energy levels are present inside the power supply. There are no
user-serviceable parts inside the power supplyHazardous conditions,
devices, and cables: Hazardous electrical conditions may be present
on power, telephone, and communication cables. Turn off the system
and unplug/disconnect the power cord, telecommunications systems,
networks, and modems attached to the system before opening it.
Otherwise, personal injury or equipment damage can result.
Hazardous conditions, processors and power supplies: Thermal
conditions may be present in the Processor/Memory Complex. Allow all
fans to continue to run until they shut down on their own after power
has been turned off. After the fans stop, you can unplug/disconnect the
power cord.
CAUTIONS
Electrostatic discharge (ESD) and ESD protection: ESD can
damage disk drives, boards, and other parts. We recommend that you do all
procedures in this section only at an ESD-protected workstation. If one is
not available, provide some ESD protection by wearing an anti-static wrist
strap attached to chassis groundany unpainted metal surfaceon your
system when handling parts.
ESD and handling boards: Always handle boards carefully. They can
be extremely sensitive to ESD. Hold boards only by their edges. After
removing a board from its protective wrapper or from the system, place it on
a grounded surface free of static electricity. Do not slide boards over any
surface.
Cooling and airflow: For proper cooling and airflow, always install the
chassis covers before turning on the system. Operating the system without
the covers in place can damage system parts.