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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 power source to allow time for BMC to initialize.
Complete the following steps until the problem is resolved:

  1. Make sure that the power buttons on the server are working correctly:

    1. If the power button on the rear operator panel does not work:

      1. If the power button on the front operator panel does not work as well, go to 1.b.

      2. If the power button on the front operator panel is working correctly, reseat the rear operator panel and the cable that connects front and rear operator panels; then, reseat the server power cords.

      3. If the problem remains, go to 1.b.

    2. If the power button on the front operator panel does not work, or the power button on the rear operator panel does not work after completing Step a:

      1. If the power button on the rear operator panel is working correctly, reseat the front operator panel; then, reseat the server power cords.

      2. Reseat the cable that connects the front operator panel to the system board; then, reseat the server power cords.

      3. If the problem remains, replace the following components, one group at a time, in the order shown; reseat the server power cords after replacing each group of the components:

        1. The front operator panel, and the cable that connects the front operator panel to the system board.
        2. The rear operator panel, and the cable that connects front and rear operator panels.

  2. Make sure that:

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

    • The power status LED at the rear of the server does not indicate a problem.

    • The Power button LED is lit on and is flashing slowly.

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

  3. If the power button LED is not lit on or is not flashing correctly, reseat all power source, power module board (PMB), PIB module and all the cables that connect PMB and PIB module; then, check the power button LED again.

  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 lit on, implement the minimum configuration to check whether any specific components lock the power permission. Replace the power source one at a time, and check the power button function.

  6. If everything is still done and the issue cannot be resolved, please 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 power LED on the system board (system board assembly).

  4. Check if the power status led at the rear of the server is lit on.

  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 (see Technical specifications).

  9. Reseat all power source, power module board (PMB), PIB module and all the cables that connect PMB and PIB module; then, check if the power status LED at the rear of the server is lit on.

  10. If the issue cannot be resolved by above actions, call service to review the issue symptom and see whether the system board (system board assembly) replacement is necessary.