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Processor-board LEDs

The following illustrations show the light-emitting diodes (LEDs) on the processor board.

Figure 1. LEDs on the processor board
LEDs on the processor board

1 System error LED (yellow)

2 System status LED (green)

3 FPGA heartbeat LED (green)

4 DIMM error LEDs (amber)

Descriptions of LEDs on the processor board​

1 System error LED (yellow)

DescriptionWhen this yellow LED is lit, another one or more LEDs in the server might also be lit to direct you to the error source.
ActionCheck system logs or internal error LEDs to identify the failed part. For more information, see Front-operator-panel LEDs and buttons.

2 System status LED (green)

DescriptionThe system status LED indicates the working status of the system.

  • Fast blinking (about four flashes per second): Power fault or is waiting for XCC power permission ready.

  • Slow blinking (about one flash per second): Power off and is ready to be powered on (standby state).

  • On: Power on.

Action

  • If the system status LED is blinking fast over 5 minutes and cannot power on, check the XCC heartbeat LED and follow the actions for the XCC heartbeat LED.

  • If the system status LED remains off or is blinking fast (about four flashes per second) and the system error LED on the front panel is on (yellow), the system is in a power fault status. Do the following:

    1. Re-plug the power cord.

    2. Remove installed adapters/devices, one at a time, until you reach the minimal configuration for debugging.

    3. (Trained technicians only) If the problem remains, capture FFDC log, and replace the processor board.

    4. If the problem still remains, contact Lenovo Support.

3 FPGA heartbeat LED (green)

DescriptionThe FPGA heartbeat LED helps you identify the FPGA status.

  • Blinking (about one flash per second): FPGA is working normally.

  • On or off: FPGA is not working.

Action

If FPGA heartbeat LED is always off or always on, do the following:

  1. Replace the processor board.

  2. If the problem remains, contact Lenovo Support.

4 DIMM error LEDs (amber)

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

For more information, see Memory problems.