IBM System x3200 Problem Determination And Service Manual page 139

To remove a non-hot-swap power supply, complete the following steps.
1. Read the safety information that begins on page vii and "Installation guidelines"
on page 73.
2. Turn off the server and all attached devices; then, disconnect all power cords
and external cables.
3. Unlock and remove the side cover (see "Removing the side cover" on page 77).
Note: It might be helpful to lay the server on its side for the remainder of this
procedure.
4. Disconnect the cables from the power supply to the system board and all
internal components.
Attention: Support the power supply While you remove the mounting screws.
After the screws are removed, the power supply is loose and can damage other
components in the server.
5. While you support the power supply, remove the four screws that secure it to
the chassis; then, lift the power supply out of the chassis. Save the screws to
use when you install the replacement power supply.
6. 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.
Chapter 4. Removing and replacing server components
121