Power-supply LEDs

This section shows the power-supply LEDs on the server.

The following illustration shows the power-supply LEDs on the rear of the server.

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

Power-supply LEDs			Description	Action	Notes
AC (green)	DC (green)	Error (yellow)
On	On	Off	Normal operation
Off	Off	Off	No ac power to the server or a problem with the ac power source	Check the ac power to the server. Make sure that the power cord is connected to a functioning power source. Turn the server off and then turn the server back on. If the problem remains, replace the power supply.	This is a normal condition when no ac power is present.
Off	Off	On	No ac power to the server or a problem with the ac power source and the power supply had detected an internal problem	Replace the power supply. Make sure that the power cord is connected to a functioning power source.	This happens only when a second power supply is providing power to the server.
Off	On	Off	Faulty power-supply	Replace the power supply.
Off	On	On	Faulty power-supply	Replace the power supply.
On	Off	Off	Power supply not fully seated, faulty system board, faulty power supply, or system not power-on	Reseat the power supply. Replace the power supply. (Trained service technician only) Replace the system board.	Typically indicates that a power supply is not fully seated.
On	Off or Flashing	On	Faulty power supply	Replace the power supply.
On	On	On	Power supply is faulty but still operational	Replace the power supply.