Resolving a power problem

Learn how to identify the service action that is needed to resolve a power problem.

1. Is the amber LED of a power supply on solid and is the amber LED on the front of the system turned off?

   If	Then
   Yes:	Ensure that the power cords for both power supplies are fully seated and that the power distribution units (PDUs) and power outlets are supplying electricity. This ends the procedure.
   No:	Continue with the next step.

2. Are the power supply LEDs turned off?

   If	Then
   Yes:	Continue with the next step.
   No:	Continue with step 4.

3. Perform the following actions, one at a time, until the problem is resolved:
   1. Ensure that all of the power cords are fully seated in the power supplies.
   2. Ensure that all of the power cords are fully seated in the power distribution units (PDUs) or wall outlets.
   3. If the power cords are plugged into PDUs, ensure that the PDUs are turned on.
   4. Ensure that all of the power cords are plugged into PDUs or wall outlets that are supplying electricity.
   5. Replace the power cords.
   6. Replace the power supplies.
      • If your system is an 8335-GCA or 8335-GTA, go to 8335-GCA and 8335-GTA locations to identify the physical location and the removal and replacement procedure.
      • If your system is an 8335-GTB, go to 8335-GTB locations to identify the physical location and the removal and replacement procedure.
      • If your system is an 8348-21C, go to 8348-21C locations to identify the physical location and the removal and replacement procedure.
   This ends the procedure.
4. Is the amber LED of a power supply on solid and is the red LED on the front of the system flashing at 0.25 Hz?

   If	Then
   Yes:	Continue with the next step.
   No:	Go to Contacting IBM service and support. This ends the procedure.

5. Perform the following actions, one at a time, until the problem is resolved:
   1. Ensure that the power supply is fully seated in the system.
   2. Ensure that the power supply fan is not blocked.
   3. Replace the power supply.
      • If your system is an 8335-GCA or 8335-GTA, go to 8335-GCA and 8335-GTA locations to identify the physical location and the removal and replacement procedure.
      • If your system is an 8335-GTB, go to 8335-GTB locations to identify the physical location and the removal and replacement procedure.
      • If your system is an 8348-21C, go to 8348-21C locations to identify the physical location and the removal and replacement procedure.
   This ends the procedure.