Power-supply LEDs
LEDs on the operator information panel of the file module indicate the cause of a problem. The topic describes the suggested actions to correct the detected problems.
The following minimum configuration is required for the DC LED on the power supply to be lit:
- Power supply
- Power cord
Note: You must turn on the file module for
the DC LED on the power supply to be lit.
The following minimum configuration is required for the file module to start:
- One microprocessor in microprocessor socket 1
- One 2 GB DIMM on the system board
- One power supply
- Power cord
- Four cooling fans (fan 1, 2, 3, and 5)
- One PCI riser-card assembly in PCI connector 1
The following illustration shows the locations of the power-supply LEDs on the AC power supply.
Figure 1. Locations of the power-supply LEDs 
The following table describes the problems that are indicated by various combinations of the power-supply LEDs and the power-on LED on the operator information panel and suggested actions to correct the detected problems.
| AC power-supply LEDs | Description | Action | Notes | ||
|---|---|---|---|---|---|
| AC | DC | Error (!) | |||
| On | On | Off | Normal operation. | ||
| Off | Off | Off | No AC power to the file module or a problem with the AC power source. |
|
This is a normal condition when no AC power is present. |
| Off | Off | On | The power supply has failed. | Replace the power supply. | |
| Off | On | Off | The power supply has failed. | Replace the power supply. | |
| Off | On | On | The power supply has failed. | Replace the power supply. | |
| On | Off | Off | Power supply not fully seated, faulty system board, or the power supply has failed. |
|
Typically indicates a power-supply is not fully seated. |
| On | Off | On | The power supply has failed. | Replace the power supply. | |
| On | On | On | The power supply has failed. | Replace the power supply. | |