Each hot-swap power supply has three status LEDs:
Figure 269. Power supply LEDs
LED Description
1 Input status The input status LED can be in one of the following states:
• Off: The power supply is disconnected from the ac power source.
• Green: The power supply is connected to the ac power source.
2 Output status The output status LED can be in one of the following states:
• Off: The server is powered off, or the power supply is not working properly. If the server is
powered on but the output status LED is off, replace the power supply.
• Slow blinking green (about one flash every two seconds): The power supply is in cold
redundancy active mode.
• Fast blinking green (about 2 flashes each second): The power supply is in cold redundancy
sleep mode.
• Green: The server is on and the power supply is working normally.
3 Fault LED
• Off: The power supply is working normally
• Amber: The power supply has failed. To resolve the issue, replace the power supply.
System-board LEDs
The following illustrations show the light-emitting diodes (LEDs) on the system board.
Press the power button to light the LEDs on the system board when the power source has been removed
from the server.
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ThinkSystem SR670 V2 Maintenance Manual
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