3. Remove the server from the rack and remove the cover (see “Removing the
cover” on page 28).
Attention: To ensure proper cooling and airflow, do not operate the server
for more than 2 minutes with the cover removed.
4. Rotate (lift) the air deflector out of the way.
5. If the server is a 3.5-inch drive model, remove the hard disk drive back plate or
backplane (see “Removing the backplane or back plate (3.5-inch drives)” on
page 50).
6. Disconnect the power-supply cables from the connector on the system board
and from all devices; then, disengage the cables from any retention-clips that
secure them to the chassis.
Note: Note the routing of all power-supply cables; you will route the
power-supply cables the same way when you install the power supply.
7. Remove the rear screw, which holds the power supply to the rear of the
chassis.
8. Loosen the captive thumbscrew at the rear of the power supply that secures
the power supply to the chassis bottom.
9. Lift the power supply out of the bay.
10. 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 “Working inside the server with the power on”
on page 26.
2. Place the new power supply into the bay.
3. Tighten the captive thumbscrew at the rear of the power supply to secure the
power supply to the chassis bottom.
4. Replace the rear screw, which holds the power supply to the rear of the
chassis (see the illustration on page 46).
5. Make sure that the air deflector is in the open position.
6. Connect the internal power-supply cable from the power supply to the power
connector (CN20) on the system board (see “System-board internal
connectors” on page 6).
7. Route the other internal power-supply cable, securing it under the
retention-clips on the chassis; then, reconnect the cable to the CD/DVD
interface card.
Chapter 4. Removing and replacing server components 47
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