DS8000 Service Documentation Version 7.5

MAP4840 CEC enclosure fails to power off during CEC enclosure parts exchange

You have been sent to this procedure during the replacement of a CEC enclosure FRU.

Before you begin

Warning: This procedure must only be used if you were sent here from elsewhere in maintenance package.

About this task

You are here because the replacement process either failed to power off the CEC enclosures or was unable to verify if the CEC enclosure was already powered off. This can occur if the management console is unable to communicate with the service processor.
Related tasks:
How to start the service information center

MAP4840 Section-1

Procedure

  1. Verify that the managed system is powered off. At the rear of the storage facility, view the CEC enclosure power supplies. See Figure 1.

    Are the DC GOOD (output) LEDs Callout label 2 lit solid?

    • No, the CEC enclosure is already powered off. Return to the on-screen panel that sent you here and continue with the replacement process.
    • Yes, continue with the next step.
    Figure 1. CEC enclosure power supply LEDs (Model 951 shown, LEDs similar for other models)
    CEC Enclosure Power Supply LEDs
  2. Attempt to power off the SF managed system (CEC enclosure) using the CEC enclosure control panel. Perform the following steps. Refer to Figure 2.
    Note: If the CEC enclosure control panel is inoperative, contact your next level of support.
    1. Press the Increment button until 02 is displayed.
    2. Press Enter. Display will show:
      Panel displays A<
    3. Press Enter. Display will show:
      Panel displays N<
    4. Press the Increment button. Display will show:
      Panel displays M<
    5. Press Enter. Display will show:
      Panel displays V<
    6. Press Enter. Display will show:
      Panel displays P<
    7. Press Enter. Display will show 02 only.
    8. Press the Power push-button and hold it until you see the power down sequence start.
    9. Wait until the CEC enclosure has powered down (Power On light will be flashing).
    10. Reset the SF managed system (CEC enclosure) to Normal mode. Repeat steps a through d. The display should now show:
      Panel displays N<
    11. Press Enter three times. Display will now show 02 only.
    12. Continue with step 3.
    Figure 2. CEC enclosure control panel
    CEC enclosure control panel
  3. The CEC enclosure has now been powered off. Return to the on-screen panel that sent you here and continue with the replacement process.