Exchange the CEC enclosure disk drive backplane

1. Use a replacement part with a valid DS8000® part number to ensure it has the proper firmware, VPD, and/or configuration to ensure it is compatible with the DS8000 service procedures. Attempting to use a generic server FRU might fail and require next level of support to recover.
2. All parts being removed must be marked or identified so they can be installed into their original locations.
   Note: Failure to do this can extend the service duration and may require next level of support assistance.
3. The management console keyboard can be moved between the operating and stowed position as needed to allow service clearance above the CEC enclosure.
4. Use the front and rear blue identify LEDs to determine the CEC enclosure to be repaired. Both blue LEDs should be lit.
   • CEC control panel blue identify LED as shown in Figure 1.
   • CEC enclosure rear blue identify LED as shown in Figure 2.

   Note: If both the front and rear CEC enclosure identify LEDs are not lit, use the location code listed in the serviceable event FRU list. See MAP1245 Finding FRUs by using location codes.

   

   

5. Verify that the CEC enclosure is in the power-off state. See Figure 3.
   1. At the rear of the CEC enclosure, view all CEC enclosure power supply DC LEDs.
   2. Are all DC (output) LEDs flashing?
      • Yes, continue with the next step.
      • No, do not continue with this FRU replacement. Go to MAP4841 CEC enclosure fails to power off during service processor repair (Models 961, 98x).

      

6. Attach the electrostatic discharge (ESD) wrist strap.
   Attention:

   • Attach an electrostatic discharge (ESD) wrist strap to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.
   • When using an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is used for static control. It does not increase or decrease your risk of receiving electric shock when using or working on electrical equipment.
   • If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds.
7. Disconnect the power cords from the CEC with the DC (output) LEDs flashing. See Figure 4.
   Notes:

   • Ensure that the power cords are correctly labeled.
   • The power supply LEDs might continue to flash for up to 20 seconds while internal power is discharged.
   • The power cord is fastened to the system by using the hook-and-loop fastener . Unstrap the fastener to allow the enclosure to be placed in the service position.

   

8. Observe the CEC enclosure control panel green power button LED . See Figure 5.
   • If it is off, go to the next step.
   • If it is flashing, the CEC enclosure is still in the power-off state. DO NOT CONTINUE. Ensure that you have unplugged the power cables.

   

9. Disconnect all remaining cables from the rear of the CEC enclosure. See Table 1 and Figure 7.

   Table 1. CEC enclosure cable connections

   Connection	Description
   P1-T3 (HMC 1)	FSP Ethernet
   P1-T4 (HMC 2)	FSP Ethernet
   P1-C3-T1, P1-C3-T2	PCIe to I/O enclosures (if C3 present)
   P1-C5-T1, P1-C5-T2	PCIe to I/O enclosures (if C5 present)
   P1-C6-T1, P1-C6-T2	PCIe to I/O enclosures
   P1-C7-T1, P1-C7-T2	PCIe to I/O enclosures
   P1-C8-T1, P1-C8-T2	i2c to RPCs
   P1-C10-T1, P1-C10-T2	LPAR Ethernet
   P1-C10-T3, P1-C10-T4	Customer network (optional feature, if used)
   P1-C11-T1, P1-C11-T2 P1-C11-T3, P1-C11-T4	Customer network (optional feature, if used)
   P1-C12-T1, P1-C12-T2	RS485 to RPCs

   

10. Remove the front cover.
    1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
    2. Remove the two shipping screws (if present) that secure the system to the rack.
    3. Pull the cover away from the system. The cover has an indentation where you can hold onto it more easily.

       

11. Place the CEC enclosure into the service position.
    1. Remove the front screws (if present) that secure the enclosure to the rack.

       

    2. Release the side latches and pull the latches to slide out the enclosure assembly.

       

12. Remove the service access cover.
    1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
    2. Release the latch by pushing the release latch in the direction shown.
    3. Slide the cover off the system unit. When the front of the service access cover has cleared the upper frame ledge, lift the cover up and off the system unit
       Note: For proper cooling and airflow, replace the cover before turning on the system.

       

13. Attach the electrostatic discharge (ESD) wrist strap. Your system has an ESD pin on the backplane as shown in Figure 11. Attach the ESD wrist strap to the ESD pin
    Note:

    • Attach an electrostatic discharge (ESD) wrist strap to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.
    • When using an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is used for static control. It does not increase or decrease your risk of receiving electric shock when using or working on electrical equipment.
    • If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds.

    

14. Remove the control panel. Press the terracotta tab and then slide the control panel straight out of the slot.

    

15. Remove the Slimline media device (DVD), if present.
    1. Press the retaining tab toward the system until the Slimline media device is unseated from the media bay. See Figure 13.
    2. Pull the Slimline media device away from the system, in the direction shown.

       

16. Unplug but do not remove the disk drives from their slots. Pull the drives out far enough to prevent them from interfering with the removal of the disk drive backplane.
    1. Unlock the drive handle by pressing the handle latch and pulling it out toward you, as shown in Figure 14. If the handle is not all the way out, the drive cannot slide out of the system.
    2. Support the bottom of the drive as you slide it out of the system. Hold the drive by its sides.

       

To remove the CEC enclosure disk drive backplane, complete the following steps.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
2. Remove the fan cage.
   1. Release the blue touch point latches by pulling them up, as shown in Figure 15. This action unseats the fan cage.
   2. Pull up the fan cage out of the system by holding on to the blue touch point latches .

      

3. Remove the cover from the front SAS cable. Grasp the handle and pull away from the side of the system, then slide the cover toward the rear to remove it as shown in Figure 16.

   

4. Label the front SAS cables, paying attention to the connectors each cable attaches to on the disk drive backplane and the SAS RAID internal adapter. Disconnect the front SAS cables from the disk drive backplane by pressing the latch and unplugging the cable as shown in Figure 17.

   

5. Label and disconnect the signal and control panel cables , and the power Y cable , from the disk drive backplane as shown in Figure 18.

   

6. Make sure that all cables are carefully positioned out of the way, such that the disk drive backplane can be easily lifted and removed.
7. Carefully unscrew the disk drive backplane's captive thumbscrews until fully loose as shown in Figure 19.
8. Tilt the disk drive backplane in the direction that is shown and then slide it to the side so that the disk drive backplane cutouts clear the tabs in the chassis.
9. Remove the disk drive backplane.

   

To replace the CEC enclosure disk drive backplane, complete the following steps.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
2. Align the disk drive backplane with its corresponding connectors inside the system.
3. Using the ledge at the top of the disk drive backplane and facing towards the front of the system, replace the backplane. Tilt it towards the rear and lower it down into the chassis. Align the backplane cutouts with the tabs in the chassis to insert it into the system. Slide the backplane to the side as is shown in Figure 20.
4. Carefully tighten the captive thumbscrews until each one is secured to the system's chassis.

   

5. Reconnect the signal and control panel cables , and the power Y cable , to the disk drive backplane as shown in Figure 21.

   

6. Reconnect the front SAS cables to the disk drive backplane as is shown in Figure 22. Push the connector in until the connector latch clicks. Arrange the cables against the side of the chassis.

   

   Note: With one PCIe3 x8 SAS RAID internal adapter (CCIN 57D7) in slot P1-C14 (base-storage feature), one SAS cable connects the lower disk drive backplane connector (J1) to the P1 connector on the adapter. A SAS cable connects the upper disk drive backplane connector (J2) to the P2 connector on the same adapter. See Figure 23.

   

7. Replace the SAS cable cover. Place the cover slots onto the pins on the side of the chassis. The triangle symbol on the SAS cable cover lines up with the triangle symbol on the side of the chassis when the cover slots and pins are aligned correctly. Push the cover forward toward the front of the system until the handle latches in place. See Figure 24.

   

8. Replace the fan cage with the fans installed.
   1. Ensure that there are no cables obstructing the fan cage installation area.
      Important: Failure to ensure that the cables are tucked out of the way can damage the cables.
   2. Lower the fan cage into the system by holding on to the blue touch point latches , as shown in Figure 25.
   3. Push down on the fan cage to seat in the system.
   4. Rotate the latches as shown in Figure 25, to lock the fan cage in place.

      

To prepare the system for operation, complete the following steps.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
2. Replace the service access cover.
   1. Slide the cover on to the system unit.
   2. Close the latch release by pushing it in the direction shown.

      

3. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
4. Reseat the disk drives into their slots.
   1. Unlock the drive bay handle by pressing it and pulling it out toward you. If the handle is not all the way out, the drive does not slide into the system. See Figure 27.
   2. Hold the drive by the top and bottom edges as you position the drive, and insert it into the drive slot.
   3. Slide the drive all the way into the system, and push the drive bay handle in until it locks, as shown in Figure 27.
      Important: Ensure that the drive is fully seated and is all the way into the system.

      

5. Replace the Slimline media device (DVD) (if one was removed).
   1. Align the Slimline media device with the media bay, and support the bottom of the device as you slide it halfway into the system. See Figure 28.
   2. Push the Slimline media device fully into the system until the device locks in place.

      

6. Replace the control panel.
   1. Align the control panel with the control panel slot.
   2. Slide the control panel into the slot, and press on the terracotta tab to lock it in place.

      

7. Place the CEC enclosure into the operating position.
   1. Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
   2. Unlock the blue rail safety latches by lifting them upward.
   3. Push the system unit back into the rack until both system unit release latches lock into position.
   4. Secure the enclosure to the rack with screws, if screws were removed when preparing the enclosure for service.

      

8. Replace the front cover.
   1. Push the cover onto the system.
   2. Gently push the cover in until the cover clips are seated in their respective mounting posts as shown in the following figure. The cover snaps into place and has an indentation where you can hold onto it more easily.
   3. Replace the shipping screws .

      

9. Attach the electrostatic discharge (ESD) wrist strap.
10. Reconnect all cables, except for power cords. See Table 2 and Figure 32.
    If optical Ethernet connections are used, use proper cleaning procedures.

    Important: The optical cable plugs (LC connectors) and ports (SFPs) must be cleaned before connecting them. Use cleaning tool 54Y4392 or IBM-approved alternative. After cleaning SFPs with the tool, use air bulb 45D2645 or IBM-approved alternative. For detailed procedures, refer to current DS8000 Info Alerts or contact your next level of support.

    Table 2. CEC enclosure cable connections

    Connection	Description
    P1-T3 (HMC 1)	FSP Ethernet
    P1-T4 (HMC 2)	FSP Ethernet
    P1-C3-T1, P1-C3-T2	PCIe to I/O enclosures (if C3 present)
    P1-C5-T1, P1-C5-T2	PCIe to I/O enclosures (if C5 present)
    P1-C6-T1, P1-C6-T2	PCIe to I/O enclosures
    P1-C7-T1, P1-C7-T2	PCIe to I/O enclosures
    P1-C8-T1, P1-C8-T2	i2c to RPCs
    P1-C10-T1, P1-C10-T2	LPAR Ethernet
    P1-C10-T3, P1-C10-T4	Customer network (optional feature, if used)
    P1-C11-T1, P1-C11-T2 P1-C11-T3, P1-C11-T4	Customer network (optional feature, if used)
    P1-C12-T1, P1-C12-T2	RS485 to RPCs

    

11. Reconnect the power cords to the CEC enclosure. See Figure 33.
12. Fasten the power cords to the enclosure by using the hook-and-loop fasteners .

    

13. Verify that the CEC enclosure has power available. See Figure 34.
    1. At the rear of the CEC enclosure, view the CEC enclosure power supply DC LEDs.
    2. Are all DC (output) LEDs flashing?
       • Yes, continue with the next step.
       • No, ensure that the power cords are properly connected. If no connection problem is found, contact your next level of support.

       

14. Wait up to 5 minutes for the CEC enclosure control panel power button LED to flash. See Figure 35.
    Note: This ensures that the CEC enclosure is in the power-off state.
    1. Is the power button LED flashing?
       • Yes, go to the next step.
       • No, ensure that the CEC enclosure power supplies are fully seated. The possible failing FRUs are the CEC enclosure system backplane, I2C interface card and cables, and control panel. You can also call the next level of support.

       

15. Close the rear door of the rack.
16. Exit this service information center parts exchange procedure and return to the procedure that sent you here.