PWR1908 instructions for 5088 or 0588 expansion units

1. Perform the following:
   1. Power off the frame that you are working on by removing the jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove and label all cards installed in the PCI backplane area.
   3. Power on the frame by reconnecting the ac jumper cable to the unit.

   Does a power reference code occur?

   • Yes: Continue with the next step.
   • No: Go to step 8.
2. Is the reference code 1xxx 2603?
   • No: Continue with the next step.
   • Yes: Replace the PCI backplane.

     This ends the procedure.

3. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove power supply P01.
   3. Remove fan assembly B01 from power supply P01 and install it on a new power supply P01.
   4. Install the new power supply P01.
   5. Power on the frame by reconnecting the ac jumper cable to the unit you are working on.

   Does a power reference code occur?

   • Yes: Continue with the next step.
   • No: The power supply that you replaced in this step was the failing item.

     This ends the procedure.

4. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove the new power supply P01 and replace it with the original power supply P01.
   3. Remove power supply P02.
   4. Remove fan assembly B02 from power supply P02 and install it on a new power supply P02.
   5. Install the new power supply P02.
   6. Power on the frame by reconnecting the ac jumper cable to the unit you are working on.

   Does a power reference code occur?

   • Yes: Continue with the next step.
   • No: The power supply that you replaced in this step was the failing item.

     This ends the procedure.

5. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove both the new power supply P02 and the fan assembly B02.
   3. Reinstall the original power supply P02 and a new fan assembly B02.
   4. Power on the frame by reconnecting the ac power cables to the unit you are working on.

   Does a power reference code occur?

   • Yes: Continue with the next step.
   • No: The fan assembly B02 that you replaced in this step was the failing item.

     This ends the procedure.

6. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove power supply P02.
   3. Replace the new fan assembly B02 with the original fan assembly B02.
   4. Reinstall power supply P02.
   5. Remove power supply P01.
   6. Remove fan assembly B01 and replace it with a new fan assembly B01.
   7. Reinstall power supply P01.
   8. Power on the frame by reconnecting the ac jumper cable to the unit you are working on.

   Does a power reference code occur?

   • Yes: Continue with the next step.
   • No: The fan assembly B01 that you removed in this step is the failing item.

     This ends the procedure.

7. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Remove power supply P01.
   3. Replace fan assembly B01 with the original fan assembly B01.
   4. Reinstall power supply P01.
   5. Replace the following FRUs one at a time:
      • Display panel.
      • PCI backplane assembly CB1.

      This ends the procedure.

8. Perform the following:
   1. Power off the frame you are working on by removing the ac jumper cable from the power supplies on the 5088 or 0588 expansion unit.
   2. Reinstall one of the cards that you removed in step 1.
   3. Power on the frame by reconnecting the ac power cables to the unit you are working on.

   Does a power reference code occur?

   • No: Continue with the next step.
   • Yes: Exchange the last card that you reinstalled in this step.

     This ends the procedure.

9. Have you reinstalled all of the cards?
   • Yes: Replace the PCI backplane assembly CB1.

     This ends the procedure.

   • No: Repeat step 8, reinstalling the next card.