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System-board LEDs

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

Figure 1. System-board LEDs
Top sideBottom side
Figure 1. System board LEDs on top side

Figure 2. System board LEDs on bottom side

Table 1. System board LEDs description and actions
LEDDescription and actions

1 Adapter 1 status LED

2 Adapter 2 status LED

The states of the adapter LED are as follows:

  • On (green): The server is connected to the power adapter and working normally.

  • On (yellow): The server is connected to the power adapter but can not be powered on since the power capability is unable to support the system requirement.

  • Off: The power adapter is disconnected or a power problem occurs.

3 DIMM 1 error LED

4 DIMM 2 error LED

LED on: an error has occurred to the DIMM the LED represents.

5 M.2 slot 2 status LED

6 M.2 slot 3 status LED

14 M.2 slot 1 status LED

The states of the M.2 LED are as follows:

  • LED on/flashing : M.2 drive is operating normally.

  • LED off: an error has occurred to the M.2 the LED represents or the M.2 drive is not powered.

7 Fan 1 error LED

8 Fan 2 error LED

LED on: an error has occurred to the fan the LED represents.
9 System error LED (yellow)LED on: an error has occurred. Complete the following steps:

  • Check the identification LED and check log LED and follow the instructions.

  • Check the Lenovo XClarity Controller event log and the system error log for information about the error.

  • Save the log if necessary, and clear the log afterwards.

10 XCC status LED
The states of the XCC status LED are as follows:

  • On: XCC is alive.

  • Off: XCC is not ready or not alive. The LED is in this state when the server is first connected to the power source. It does not turn on until the SSP (Synchronous Serial Port) is ready.

11 XCC heartbeat LED (green)This LED indicates the XCC heartbeat and boot process:

  • LED blinking rapidly: XCC code is in the loading process.

  • LED going off momentarily and then starts blinking slowly: XCC is fully operational. You can now press the power-control button to power on the server.

12 FPGA power status LED (green)
The FPGA power LED helps to identify different FPGA errors.

  • LED blinking rapidly (four times per second): The FPGA permission is delayed.

  • LED blinking slowly (once per second): The FPGA is ready to power on.

  • LED on: The FPGA power is on.

13 FPGA heartbeat LED (green)This LED indicates power-on and power-off sequencing.