Power-supply LEDs

This section describes the power-supply LEDs on the rear of the server and the suggested actions to correct the detected problems.

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

Figure 1. 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 the system power LED on the operator information panel and suggested actions to correct the detected problems.

Table 1. Power-supply LEDs.

The power-supply LEDs table with two rows of column headings for the AC power-supply LEDs combination of AC, DC, and Error, and one row of column headings for the description, action, and notes.

AC Power-supply LEDs			Description	Action	Notes
AC	DC	Error
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. Restart the server. If the error remains, check the power supply LEDs. If the problem remains, replace the power supply.	This is a normal condition when no ac power is present.
Off	Off	On	Faulty power-supply.	Make sure that the power cord is connected to a functioning power source. Replace the power supply.	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, or faulty power supply	Reseat the power supply. If the system board error LED is not lit, replace the power supply. (Trained technician only) If the system board error LED is lit, 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.