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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 26. Fixed power supply unit LEDs
Table 4. Fixed power supply unit LEDs
LED
Power input LED
1
(green)
Power output LED
2
(green)
Power supply error LED
3
(yellow)
Hot-swap power supply unit LED
Figure 27. Hot-swap power supply unit LED
Description
LED
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.
Power supply
1
• Amber: The AC power cord is unplugged, AC power lost (with a second power supply in
status
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.
System-board LEDs
The following illustration indicates the light-emitting diodes (LEDs) on the system board.
Description
• 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.
• 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.
• Off: The power supply is working normally.
• Yellow: The power supply has failed. To resolve the issue, replace the power supply.
.
Chapter 2
Server components
35
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