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Power problems

Use this information to solve power problems.

Table 1. Symptoms and user actions for power problems.

Table with one spanned column at the top and two other columns with headers that provides information about symptoms and user actions to solve power problems

  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • See Parts listing, System x3850 X6 and x3950 X6 Type 6241 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
  • If an action step is preceded by (Trained service technician only), that step must be performed only by a Trained service technician.
SymptomAction
The server will not start when you press the power-on button.
  1. If the front information panel power-on button LED is on and blinking more than once per second, complete the following steps:
    1. Check the IMM event log to make sure that the power state matches the power-on button LED.
    2. Check to verify that the power supply ac power LED and dc power LED are on and lit green. If not, complete the following:
      1. Remove the ac power input to the server for 20 seconds and power-on the server again.
      2. If the power supply ac power LED is on and lit green, and the dc power LED is off, no fault LEDs are on, and if the server has been recently serviced or moved, reseat the standard I/O book.
  2. If the front information panel power-on button LED is on and blinking approximately once per second, complete the following steps:
    1. Check the IMM event log for any power faults and to ensure that the power state matches the power LED.
    2. Check the power supply LEDs and address any power fault issues.
    3. Press the power-on button to attempt to restore power.
    4. Attempt to restore power remotely. If power is restored, replace the front operator panel.
    5. Remove ac power input to the server for 20 seconds and power-on the server again.
  3. If the front information panel power-on button LED is off, complete the following steps:
    1. Verify that ac power input is present by checking the ac power LEDs located on each power supply.
    2. Verify that the power supplies are producing dc power input by checking the dc power LEDs on each power supply.
    3. If the server has been recently serviced or moved, check that the standard I/O book is seated properly.
The server does not turn off
The server will not power-off using the operating system or the power-on button, complete the following steps:
  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-on button and holding it down for 5 seconds.
    3. Restart the server.
    4. If the server fails POST and the power-on button does not work, disconnect the ac power cord for 20 seconds; then, reconnect the ac power cord and restart the server.
  2. If the problem remains or if you are using an ACPI-aware operating system, replace the standard I/O book.
The server unexpectedly shuts down, and the LEDs on the operator information panel are not lit.
  1. Check the IMM event log for errors and resolve any errors associated with the device.
  2. Check the LCD display panel for other error information.
  3. If the problem remains, see Solving undetermined problems.