DS8000 Service Documentation Version 7.5

Exchange the CEC enclosure system processor card

Before you begin

Icon for electrostatic discharge wrist strapUse approved ESD procedures to prevent damage.

Attention:
  • This is not a stand-alone procedure. Customer disruption and damage to the hardware might occur if microcode and power boundaries are not in the proper conditions for this service action.
  • If you were sent here by a serviceable event FRU repair, the microcode and power boundaries have already been set.
  • If you were not sent here by a serviceable event FRU repair, see MAP1230 Replace a FRU without using a serviceable event.
Notes:
  • All the cables and FRUs to be removed must be uniquely identified so they can be reinstalled correctly.
  • If an installed earthquake resistance kit prevents you from accessing this FRU, refer to MAP1600.
Related tasks:
How to start the service information center

Remove the system processor card

Procedure

  1. Verify that the CEC enclosure is in the "power off" state before you continue. (The CEC enclosure should already be in the power off state.)
    Note: If this FRU has a FRU identify indicator LED, it is no longer lit.

    If you have not already located the FRU to be replaced, use the location code listed in the serviceable event FRU list. See MAP1245 Finding FRUs by using location codes.

  2. At the rear of the storage facility, view both CEC enclosure power supplies.
    Figure 1. CEC enclosure DC good LEDs

    CEC enclosure DC good LEDs

    Are both DC GOOD LEDs flashing?

  3. Remove all power from the CEC enclosure.
    • At the rear of the CEC enclosure, disconnect the power input cables Callout label A to both CEC enclosure power supplies.
    • At the CEC enclosure control panel, observe the green Power® Present icon, beneath the white Power button.
      • If it is slow flashing, the CEC enclosure is still in the power-off state. DO NOT CONTINUE. Ensure that you have unplugged the power cables.
      • If it is off, go to the next step.
    Figure 2. CEC enclosure (rear)
    CEC enclosure (rear)
  4. At the front of the CEC enclosure, remove the control panel by pressing the locking tabs Callout label A located on either side of the panel, grasping the edges of the panel, and pulling it out of its bay Callout label B. See Figure 3.
    Figure 3. Removing the CEC enclosure control panel
    Removing the CEC enclosure control panel
  5. Remove all system processor voltage cards. See Figure 4.
    1. Squeeze the top of the latch to release it.
    2. Rotate the latch out and then down.
    3. Grasp the pull ring and slowly pull the system processor voltage card out of the enclosure.
    Attention: Pulling the system processor voltage card out of the card enclosure requires a large amount of force. The system processor voltage card is of substantial weight, so grasp it firmly when it is free of the card enclosure.
    Figure 4. Removing the system processor voltage card

    Removing the system processor voltage cards

  6. Unlock the system processor backplane assembly Callout label A and then pull it out of the CEC enclosure using both hands. See Figure 5.
    Attention: The system backplane assembly weighs 35 lbs and should not be pulled out using the blue lever. Grasp the backplane assembly firmly with both hands when it is free of the system.
    Figure 5. Removing the system processor backplane assembly
    Removing the system processor backplane assembly
  7. Place the system backplane assembly on an acceptable electrostatic discharge (ESD) surface.
  8. If you are removing the processor backplane because of a system failure, look at the LEDs Callout label A (shown in Figure 6) located on the top of the processor card assembly to identify the failing processor location.

    If you used the service action log, Advanced System Management Interface (ASMI), or HMC to activate the identify function prior to removing the processor backplane, the LEDs located on the top can be illuminated to identify the failing processor card.

    To illuminate the location LED for the failing processor, press the LED actuator button Callout label B (shown in Figure 6) located on the right side of the assembly.

    Attention: The actuator button must be used within 20 minutes after the system backplane assembly is removed from the system. The assembly retains the energy to light the LEDs for 40 seconds after the actuator button has been pressed.
    Figure 6. LED actuator button
    LED actuator button
  9. Remove the system processor card assembly.
    1. Unscrew the two blue thumbscrews, pivot the processor alignment face plate out, and then remove it.
      Figure 7. Removing the processor alignment face plate
      Removing the processor alignment face plate
    2. Pull the locking knobs Callout label A out to the unlocked position.
    3. Push the locking arms Callout label B down and out to unlock the processor card assembly.
    4. Lift the processor card assembly Callout label C out of the system backplane assembly.
    Figure 8. Removing the system processor card assembly from the backplane assembly
    Removing the system processor backplane assembly
  10. Remove the system processor assembly cover.
    1. Loosen the two retaining knobs Callout label A on the processor card assembly and then lift the cover off Callout label B of the assembly.
      Figure 9. Removing the cover of the assembly
      Removing the cover of the assembly
  11. Remove the memory DIMMs so they can be installed on the new system processor card.
    1. Remove the mylar cover, if installed, that is covering the memory DIMMs.
    2. Locate the memory DIMM that you want to remove.
    3. Unlock the memory DIMM by pushing the connector tabs Callout label A out and then down. The tabs' lever action forces the memory DIMM Callout label B out of the connector.
    4. Lift the memory DIMM out of the connector.
      Figure 10. Removing the memory DIMM
      Removing the memory DIMM

Install the system processor card

Before you begin

Icon for electrostatic discharge wrist strapUse approved ESD procedures to prevent damage.

Procedure

  1. Install the removed memory DIMMs on the new system processor card.
    1. Ensure that the memory DIMM connector locking tabs are pushed out into the unlocked position.
    2. Carefully grasp the memory DIMM along two edges and align it with the connector.
    3. Insert the memory DIMMs firmly into the connectors.
    4. Secure the memory DIMMs with the locking tabs located at each end of the DIMM connectors.
    5. If the thin mylar sheet about the DIMMs was removed, install it now.
  2. Install the system processor assembly cover and then tighten the two retention knobs.
  3. Install the system processor card assembly.
    1. Place the processor assembly into the system backplane assembly and then lock it into place with the locking arms.
    2. Press the blue locking knobs in to the locked position.
    3. Install the processor alignment face plate and then tighten the two blue thumbscrews.
  4. Carefully slide the processor backplane assembly into the CEC enclosure. Press it into place, and then lock it with the locking arm.
  5. Replace the system processor voltage cards:
    1. Ensure that the system processor voltage card latch is rotated out to the unlocked position.
    2. Carefully grasp the system processor voltage card and slide it into the enclosure.
    3. When the system processor voltage card is almost all the way into the card enclosure, rotate the latch up into the locked position.
  6. Carefully slide the control panel into the control panel bay until you feel the locking tabs lock in place.
  7. At the rear of the CEC enclosure, connect the power input cable to both CEC enclosure power supplies.
  8. Ensure that the CEC enclosure is in the power-off state before you continue. At the CEC enclosure control panel, wait for the green Power Present icon, beneath the white Power button to slow blink, and then continue the repair.
  9. Exit this service information center parts exchange procedure and return to the procedure that sent you here.