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## Verify Power Supply Functionality

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 and AC Power Connector LEDs.

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

   See Interpreting Diagnostic 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, then the power supply has been replaced successfully. No further action is required.

##### Related Information

- Power Supply Overview

- Power Supply and AC Power Connector Configuration Reference

- Power Supply and AC Power Connector LEDs

- Locate a Faulty Power Supply

- Remove a Power Supply

- Install a Power Supply

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