Table 15. System LEDs on the rear view
LED
Description
Action
1 System ID LED
(blue)
This LED helps you to visually
locate the server.
A system ID button with LED is also located on the front
of the server. You can press the system ID button to turn
on/off or blink the front and rear ID LEDs.
2 System error LED
(yellow)
LED on: 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.
Check system logs or internal error LEDs to identify the
failed part.
System-board-assembly LEDs
The following illustrations show the light-emitting diodes (LEDs) on the system board assembly.
Press the power button to light the LEDs on the system board assembly when the power source has been
removed from the server.
Chapter 2. Server components 41
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