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Power supply LEDs

The illustration in this section shows the LEDs on the power supply.

Fixed power supply unit LEDs​

Figure 1. Fixed power supply unit LEDs
Fixed power supply unit LEDs
Table 1. Fixed power supply unit LEDs
LEDDescription
1 Power input LED (green)

  • Off: The power supply is disconnected from the ac power source or a power problem occurs.

  • Green: The power supply is connected to the ac power source.

2 Power output LED (green)

  • Off: The server is powered off, or the power supply is not working properly. If the server is powered on but the power output LED is off, replace the power supply.

  • Green: The server is on and the power supply is working normally.

3 Power supply error LED (yellow)

  • Off: The power supply is working normally.

  • Yellow: The power supply has failed. To resolve the issue, replace the power supply.

Hot-swap power supply unit LED​

Figure 2. Hot-swap power supply unit LED
Hot-swap power supply unit LED
LEDDescription
1 Power supply status
The power supply status LED can be in one of the following states:

  • Green: The power supply is connected to the AC power source and working normally.

  • Off: The power supply is disconnected from the AC power source.

  • Slow blinking green (about one flash every second): The power supply is in PSU standby state with AC present, cold standby state, or always standby state.

  • Amber: The AC power cord is unplugged, AC power lost (with a second power supply in parallel still in AC power input power), or power supply has failed. To resolve the issue, replace the power supply.

  • Slow blinking amber (about one flash every second): Power supply warning events where the power supply continues to operate.

  • Fast blinking green (about 2 flashes each second): Power supply firmware updating.