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System board LEDs

The illustration in this section shows the LEDs on the system board.

Figure 1. System board LEDs
System board LEDs
Table 1. System-board LEDs
1 System power LED3 DIMM error LEDs (available on some models)
2 FPGA heartbeat LED (green)4 XCC heartbeat LED (green)

1 System power LED

The states of the 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. You can press the power-control button to turn on the server.
  • Lit: The server is turned on.

2 FPGA heartbeat LED (green)

This LED indicates power-on and power-off sequencing.

3 DIMM error LEDs (available on some models)

When a DIMM error LED is lit, it indicates that the corresponding memory module has failed.

4 XCC heartbeat LED (green)

This LED indicates XCC heartbeat and boot process:
  • LED blinking fast: XCC code is in the loading process.
  • LED going off momentarily: XCC code has loaded completely.
  • LED going off momentarily and then starts blinking slowing: XCC is fully operational. You can now press the power-control button to power on the server.