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## Verify the Functionality of a Power Supply

1. Verify that the power supply Power OK and AC Present LEDs are lit, and that the Fault LED is not lit.

   See Power Supply LEDs.

2. Verify that the front and rear Service Required LEDs are not lit.

   See Front Panel System Controls and LEDs.

3. Perform one of the following tasks based on your verification results:
   - If the previous steps did not clear the fault, see Diagnostics Process.
   - If Step 1 and Step 2 indicate that no faults have been detected, return the server to operation:

     See Returning the Server to Operation.

##### Related Information

- Remove a Power Supply

- Install a Power Supply

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