Installing The Power Supply - IBM 8849 Service Manual

To remove the power supply, complete the following steps:
10. If you are instructed to return the power supply, follow all packaging

Installing the power supply

To install the replacement power supply, complete the following steps:
Air deflector
1. Read the safety information that begins on page vii and "Installation guidelines"
on page 69.
2. Disconnect the ac power cord from the connector on the power supply.
Disconnect all external cables from the server.
3. Remove the server from the rack and remove the cover (see "Removing the
cover" on page 72).
Attention: To ensure proper cooling and airflow, do not operate the server
for more than 2 minutes with the cover removed.
4. Remove the air deflector.
5. Remove the hard disk drive back panel or backplane (see "Removing the
SAS/SATA backplane or SATA back panel" on page 92).
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.
instructions, and use any packaging materials for shipping that are supplied to
you.
1. Read the safety information in "Working inside the server with the power on"
on page 70.
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.
Captive screw
Chapter 4. Removing and replacing server components
Power supply
Rear screw
89