Figure 17. System-board LEDs
Table 13. System board LEDs description and actions
LED
Description and actions
1 System error LED (yellow) An error has been detected on the server. Causes might include one or
more of the following errors:
• The temperature of the server reached the non-critical temperature
threshold.
• The voltage of the server reached the non-critical voltage threshold.
• A fan has been detected to be running at low speed.
• The power supply has a critical error.
• The power supply is not connected to the power.
Complete the following steps:
Check system logs or internal error LEDs to identify the failed part.
2 System power LED (green) The states of the system power LED are as follows:
• Off: No power supply is properly installed, or the LED itself has
failed.
• Flashing rapidly (four times per second): The server is turned off
and is not ready to be turned on. The power-control button is
disabled. This will last approximately 5 to 10 seconds.
• Flashing slowly (once per second): The server is turned off and is
ready to be turned on. Press the power-control button to turn on the
server.
• On: The server is turned on.
Chapter 2. Server components 35
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