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 minimum configuration is required for the server to start:

• One microprocessor
• One 1 GB DIMM
• Power supply
• Power cord
• ServeRAID SAS/SATA adapter
• Four cooling fans

The following illustration shows the LEDs and connectors on the rear of the fixed power-supply model.

Figure 1. LEDs and connectors on the rear of the fixed power-supply model

The following illustration shows the LEDs and connectors on the rear of the redundant power-supply model.

Figure 2. LEDs and connectors on the rear of the redundant power-supply model

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.

Table 1. Power-supply LEDs

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.
On	Off	Off	Faulty system board or faulty power supply	Turn off the server and disconnect the power cord from the server; then, reconnect the power cord. If the system board error (fault) 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. This is a normal condition before turning on the system.
On	Off or Flashing	On	Faulty power supply	Replace the power supply.
On	On	Off	Normal operation
On	On	On	Power supply is faulty but still operational	Replace the power supply.