Removal and replacement procedures 26
WARNING: To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• Unplug the power cord from the power supply to disconnect power to the equipment.
• Do not route the power cord where it can be walked on or pinched by items placed against
it. Pay particular attention to the plug, electrical outlet, and the point where the cord
extends from the server.
WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and the
internal system components to cool before touching them.
CAUTION: Do not operate the server for long periods with the access panel open or removed.
Operating the server in this manner results in improper airflow and improper cooling that can
lead to thermal damage.
Preparation procedures
To access some components and perform certain service procedures, you must perform one or more of the
following procedures:
• Power down the server (on page 26).
If you must remove a server from a rack or a non-hot-plug component from a server, power down the
server.
• Extend the server from the rack ("Extending the server from the rack" on page 27).
If you are performing service procedures in an HP, Compaq branded, telco, or third-party rack, you
can use the locking feature of the rack rails to support the server and gain access to internal
components.
For more information about telco rack solutions, refer to the RackSolutions.com website
(http://www.racksolutions.com/hp
).
• Remove the server from the rack (on page 28).
If the rack environment, cabling configuration, or the server location in the rack creates awkward
conditions, remove the server from the rack.
• Remove the access panel ("Removing the access panel" on page 28).
If you are servicing internal components, remove the access panel.
Power down the server
WARNING: To reduce the risk of personal injury, electric shock, or damage to the equipment,
remove the power cord to remove power from the server. The front panel Power On/Standby
button does not completely shut off system power. Portions of the power supply and some
internal circuitry remain active until AC power is removed.
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