Removal and replacement procedures 53
CAUTION: If only one power supply is installed, do not remove the power supply unless the server has
been powered down. Removing the only operational power supply will cause an immediate power loss.
NOTE: If you remove or replace the primary hot-plug power supply, use the T-15 Torx screwdriver provided
with the server to remove the shipping screw. It is located just under the port-colored plastic handle of the
power supply unit.
NOTE: Refer to the section "Power supply LEDs (on page 79)" for information on the current status of the
hot-plug power supply.
1. Disconnect the power cord from the power supply.
2. Remove the shipping screw, if applicable.
NOTE: If you remove or replace the primary hot-plug power supply, use the T-15 Torx screwdriver provided
with the server to remove the shipping screw. It is located just under the port-colored plastic handle of the
power supply unit.
3. Remove the hot-plug power supply from the server.
CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all bays
are populated with either a component or a blank.
To replace the component, reverse the removal procedure.
Replacing hot-plug fans
The server supports redundant hot-plug fans ("Fan locations" on page 87) to provide proper airflow to the
server if a primary fan fails.
WARNING: To prevent personal injury from hazardous energy:
• Remove watches, rings, or other metal objects.
• Use tools with insulated handles.
• Do not place tools or metal parts on top of batteries.
IMPORTANT: Remove and replace one fan at a time. If the system detects two fan failures in the same
zone, the server shuts down to avoid thermal damage.
1. Extend the server from the rack, if applicable ("Extending the server from the rack" on page 26).
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