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Removal and replacement procedures 31
CAUTION: The default and redundant power supplies in the server must have the same output
power capacity. Verify that all power supplies have the same part number and label color. The
system becomes unstable and might shut down when it detects mismatched power supplies.
To replace the component, reverse the removal procedure.
Access panel
To remove the component:
WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and the
internal system components to cool before touching them.
CAUTION: For proper cooling, do not operate the server without the access panel, baffles,
expansion slot covers, or blanks installed. If the server supports hot-plug components, minimize
the amount of time the access panel is open.
1. Power down the server (on page 27).
2. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
3. Unlock the tower bezel (on page 26).
4. Place the server on its side.
5. Remove the access panel:
a. Loosen the access panel thumbscrew.
b. Slide the access panel back.
c. Lift the access panel away from the chassis.
To replace the component, reverse the removal procedure.