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Power on and power off problems

Use this information to resolve issues when powering on or powering off the server.

The power button does not work (server does not start)​

Note
The power button will not function until approximately 1 to 3 minutes after the server has been connected to ac power to allow time for BMC to initialize.
Complete the following steps until the problem is resolved:

  1. Make sure that the power button on the server is working correctly:

    1. Disconnect the server power cords.

    2. Reconnect the server power cords.

    3. Reseat the front operator panel cable, and then repeat steps 1a and 1b.

      • If the server starts, reseat the front operator panel.

      • If the problem remains, replace the front operator panel.

  2. Make sure that:

    • The power cords are correctly connected to the server and to a working electrical outlet.

    • The LEDs on the power supply do not indicate a problem.

    • The Power button LED lights up and flash slowly.

    • The push force is enough and with button force response.

  3. If the power button LED is not lighting up or is not flashing correctly, reseat all the power supplies and make sure the AC LEDs on the PSU rear side light up.

  4. If you have just installed an optional device, remove it, and restart the server.

  5. If the issue is still observed or without power button LED lighting up, implement the minimum configuration to check whether any specific components lock the power permission. Replace each power supply and check the power button function after installing each one.

  6. If everything is still done and the issue cannot be resolved, collect the failure information with system logs captured to Lenovo support.

Server does not power on​

Complete the following steps until the problem is resolved:

  1. Check the event log for any events related to the server not powering on.

  2. Check for any LEDs that are flashing amber.

  3. Check the LEDs on the system board assembly. See System-board-assembly LEDs.

  4. Check if AC power LED lights up or the amber LED lights up at the PSU rear side.

  5. AC cycle the system.

  6. Remove the CMOS battery for at least ten seconds, then, reinstall the CMOS battery.

  7. Try to power on the system by IPMI command through XCC or by the power button.

  8. Implement the minimum configuration (one processor, one DIMM and one PSU without any adapter and any drive installed).

  9. Reseat all power supplies and make sure that the AC LEDs on the PSU rear side light up.

  10. Replace each power supply and check the power button function after installing each one.

  11. If the issue cannot be resolved by above actions, call service to review the issue symptom and see whether the system I/O board or processor board replacement is necessary.

Server does not power off​

Complete the following steps until the problem is resolved:
  1. Determine whether you are using an Advanced Configuration and Power Interface (ACPI) or a non-ACPI operating system. If you are using a non-ACPI operating system, complete the following steps:

    1. Press Ctrl+Alt+Delete.

    2. Turn off the server by pressing the power-control button and holding it down for 5 seconds.

    3. Restart the server.

    4. If the server fails POST and the power-control button does not work, disconnect the power cord for 20 seconds; then, reconnect the power cord and restart the server.

  2. If the problem remains or if you are using an ACPI-aware operating system, suspect the system board (system board assembly).