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DC power-supply LEDs

Use this information to view DC power-supply LEDs.

The following illustration shows the locations of the power-supply LEDs on the dc power supply.
Figure 1. DC power-supply LEDs
DC power-supply LEDs

The following table describes the problems that are indicated by various combinations of the power-supply LEDs on a dc power supply and suggested actions to correct the detected problems.

DC power-supply LEDsDescriptionActionNotes
IN OKOUT OKError (!)
OnOnOffNormal operation.  
OffOffOffNo dc power to the server or a problem with the dc power source.
  1. Check the dc power to the server.
  2. Make sure that the power cord is connected to a functioning power source.
  3. Restart the server. If the error remains, check the power-supply LEDs.
  4. If the problem remains, replace the power-supply.
This is a normal condition when no dc power is present.
OffOffOnThe power supply has failed.Replace the power supply. 
OffOnOffThe power supply has failed.Replace the power supply. 
OffOnOnThe power supply has failed.Replace the power supply. 
OnOffOffPower-supply not fully seated, faulty system board, or the power supply has failed.
  1. Reseat the power supply.
  2. Follow actions in the Power problems.
  3. If the OVER SPEC LED on the light path diagnostics is lit, follow the actions in Light path diagnostics LEDs.
  4. If the OVER SPEC LED on the light path diagnostics is not lit, check the error LEDs on the system board and the IMM2 error messages. Follow steps in Power problems and Solving power problems until the problem is solved.
Typically indicates a power-supply is not fully seated.
OnOffOnThe power supply has failed.Replace the power supply. 
OnOnOnThe power supply has failed.Replace the power supply.