Exchange the CEC enclosure memory module

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 mark or identify parts can extend the service duration and may require next level of support assistance.
3. 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.

   

   

4. 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 A0x).

   

5. Disconnect the power cords from the CEC with the DC (output) LEDs flashing. See Figure 4.
   Notes:

   • Ensure 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 using the hook-and-loop fastener . Unstrap the fastener to allow the enclosure to be placed in the service position.

   

6. 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.

   

7. Attach the electrostatic discharge (ESD) wrist strap. The ESD wrist strap must be connected to an unpainted metal surface until the service procedure is completed, and if applicable, until the service access cover is replaced.
   Attention:

   • Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.
   • When you use 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. If at any point in this service process you move away from the system, it is important to again discharge yourself by touching an unpainted metal surface for at least 5 seconds before you continue with the service process.

   

8. 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-C1-T1 (HMC 1)	FSP Ethernet
   P1-C1-T2 (HMC 2)	FSP Ethernet
   P1-C6-T1	PCIe to I/O enclosures
   P1-C8-T1	PCIe to I/O enclosures
   P1-C9-T1	PCIe to I/O enclosures
   P1-C10-T1, P1-C10-T2	Customer network (optional feature, if used)
   P1-C11-T1, P1-C11-T2	LPAR Ethernet
   P1-C12-T1	PCIe to I/O enclosures

   

9. Place the CEC enclosure into the service position.
   1. Open the side latches and pull the latches to slide the system unit fully into the service position, until the slides click and hold the system unit securely.
   2. Ensure that the screws inside the latches are not secured to the rack. See Figure 8.

   

10. Remove the service access cover.
    1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
    2. Release the service access cover 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 clears the upper frame ledge, lift the cover up and off the system unit.
       Attention: For proper cooling and airflow, replace the cover before turning on the system.

    

11. To activate the identify LED for the faulty part, press and hold push-button on the trusted platform module card as shown in Figure 10. Verify that the LED is lit, which indicates that sufficient power exists for the identify LED. If the LED is not lit, use the location code to find the physical location by using the service label.

    

To remove a memory module from the system, complete the steps in this procedure.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
2. Lift each air baffle straight up. See Figure 11.

   Place air baffles upside down on a clean area so that the foam does not collect contaminants. When you turn an air baffle over, hold the detachable drive cover to prevent it from coming loose.

   

3. To unlock the memory module from its connector, simultaneously push both of the locking tabs away from the module in the direction that is shown in Figure 12.

   The lever action of the tabs pushes the memory module out of the connector. If you find it hard to open the tabs with your fingers, you may use the tips of ball point pens, or the eraser ends of pencils. The levers must be opened simultaneously, so that the memory module lifts straight up.

   

4. Hold the memory module by the edges and pull it out of the system.
5. If the removed part is used again, place the part on an electrostatic discharge (ESD) mat.

To replace a memory module in the system, complete the steps in this procedure.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
2. Grasp the new memory module along its edges and align it with the slot.
   Attention: Memory modules are keyed to prevent a memory module from being installed incorrectly. Note the location of the key tab within the memory module connector before you attempt to install the memory module.
3. Ensure that the locking tabs of the memory module are open. Slowly press the memory module straight down, firmly into the slot, until the locking tabs lock into place. See Figure 13.

   

4. Replace each air baffle straight down into the chassis. See Figure 14. When an air baffle is upside-down, hold the detachable drive cover to prevent it from coming loose.

   

1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface.
2. Replace the service access cover. See Figure 15.
   1. Slide the cover onto the system unit.
   2. Close the latch release by pushing it in the direction shown.

   

3. Place the CEC enclosure into the operating position.
   1. Unlock the blue rail safety latches as shown in Figure 16 by pushing them inward.
   2. Push the system unit all the way into the rack until both release latches lock the system into the operation position.
   3. Secure the enclosure to the rack with screws, if screws were loosened when preparing the enclosure for service.

   

4. Attach the electrostatic discharge (ESD) wrist strap.
5. Reconnect all cables, except for power cords. See Table 2 and Figure 17.
   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-C1-T1 (HMC 1)	FSP Ethernet
   P1-C1-T2 (HMC 2)	FSP Ethernet
   P1-C6-T1	PCIe to I/O enclosures
   P1-C8-T1	PCIe to I/O enclosures
   P1-C9-T1	PCIe to I/O enclosures
   P1-C10-T1, P1-C10-T2	Customer network (optional feature, if used)
   P1-C11-T1, P1-C11-T2	LPAR Ethernet
   P1-C12-T1	PCIe to I/O enclosures

   

6. Reconnect the power cords to the CEC enclosure. See Figure 18.
7. Fasten the power cords to the enclosure using the hook-and-loop fasteners .

   

8. Verify that the CEC enclosure has power available. See Figure 19.
   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 the power cords are properly connected. If no connection problem is found, contact your next level of support.

   

9. Wait up to 5 minutes for the CEC enclosure control panel power button LED to flash. See Figure 20.
   Note: Waiting ensures that the CEC enclosure is in the power-off state.

   Is the power button LED flashing?

   • Yes, go to the next step.
   • No, ensure the CEC enclosure power supplies are fully seated. The possible failing FRUs are the CEC enclosure system backplane and control panel. You can also call the next level of support.

   

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