Removal and replacement procedures 40
To replace the component, reverse the removal procedure.
Power supply backplane
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 remove the component:
1. Do one of the following:
o For tower models, open and remove the tower bezel ("Remove the tower bezel" on page 28).
o For rack models, if installed, remove the security bezel ("Remove the security bezel (optional)"
on page 28).
2. Power down the server (on page 29).
3. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
4. Do one of the following:
o For tower models, place the server on a flat, level surface with the access panel facing up.
o For rack models, extend the server from the rack (on page 29).
5. Remove the access panel.
6. Remove the air baffle (on page 31).
7. Remove the fan cage (on page 31).
8. Disconnect all cables from the system board.
9. Remove the system board:
a. Loosen the two system board screws.
b. Using the system board tray handles, slide the tray forward, and then remove the system board.
10. Remove all power supplies ("Hot-plug power input module" on page 39).
11. Remove the power supply backplane:
a. Disconnect all the cables connected to the power supply backplane.
b. Remove the screws securing the backplane to the chassis.
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