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6. Remove the screw 2 that holds the power supply 1 to the rear of the chassis.
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7. Loosen the captive thumbscrew 3 that secures the power supply to the chassis bottom.
8. Lift the power supply out of the bay.
9. If you are instructed to return the power supply, follow all packaging instructions, and use any packaging
materials for shipping that are supplied to you.
Installing the power supply
To install the replacement power supply, complete the following steps:
1. Read the safety information in “Important Safety Information” on page 1 and “Guidelines for trained
service technicians” on page 115
.
2. Place the new power supply into the chassis.
3. Tighten the captive thumbscrew that secures the power supply to the chassis bottom.
4. Replace the screw that holds the power supply to the rear of the chassis.
5. Connect the internal power-supply cables from the power supply to the power connectors on the system
board. See “System-board internal connectors” on page 108 for the locations of the power connectors
on the system board.
• For power supply without advanced energy management, connect the power cables to power
connectors 1 and 2 on the system board.
• For high-efcient power supply with advanced energy manage, connect the power cables to power
connectors 1, 2, 3, and 4 on the system board.
6. Route the internal power-supply cables, securing them with the retention-clips.
7. Test the power supply:
a. Connect one end of the ac power cord for the new power supply into the connector on the back of the
power supply, and connect the other end of the power cord into a properly grounded electrical outlet.
b. Make sure that the standby power LED on the system board is lit (see “System-board LEDs” on page
112
); if the standby power LED is not lit, discontinue this procedure and obtain a new power supply.
c. Press the power-control button. Make sure that the power-on LED on the front of the server is lit.
If the server starts, proceed to step . If the server does not start, disconnect the ac power cord and
call for service.
Chapter 6. Replacing FRUs 147