Skip to main content

System-board LEDs

This section contains information on the light-emitting diodes (LEDs) on the system board.


System-board LEDs
Table 1. System-board LEDs description and actions
  • 1 System power LED (yellow)
    • Off: No power supply is properly installed, or the LED itself has failed.
    • Flashing rapidly (four times per second): The node is turned off and is not ready to be turned on. The power button is disabled. This will last approximately 5 to 10 seconds.
    • Flashing slowly (once per second): The node is turned off and is ready to be turned on. You can press the power button to turn on the node.
    • Lit: The node is turned on.
  • 2 ME heartbeat LED (green)
    • Blinking: PCH ME is functioning.
    • On: PCH ME is malfunctioning.
    • Off: PCH ME is malfunctioning.
  • 3 XCC heartbeat LED
    • Blinking (1 Hz, about one flash per second): XCC is working normally.
    • Blinking at other speeds or always on: XCC is at the initial phase or is working abnormally.
    • Off: XCC is not working.