Exchange the CEC enclosure I2C interface card assembly

Before you begin

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

Attention:

This procedure is not a stand-alone procedure. Customer disruption and damage to the hardware might occur when microcode and power boundaries are not in the proper conditions for this service action.
If a serviceable event FRU repair directed you to this procedure, the microcode and power boundaries are already set.
If a serviceable event FRU repair did not direct you to this procedure, 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.

Preparing the CEC enclosure to remove and replace the I2C interface card assembly

About this task

Procedure

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.
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.
The management console keyboard can be moved between the operating and stowed position as needed to allow service clearance above the CEC enclosure.
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.

Figure 1. Control panel LEDs

Figure 2. CEC enclosure rear LEDs
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).
Figure 3. Location of the power supplies and LEDs (Models 981, 985, 986)
Use the flashing slot identify LED to confirm the location of the adapter to be replaced.
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.
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.
Figure 4. Removing the power cords (Models 981, 985, 986)
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.
Figure 5. Control panel LEDs

Disconnect all remaining cables from the rear of the CEC enclosure. See Table 1 and Figure 6.

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

Figure 6. CEC enclosure location codes (rear view) (Models 981, 985, and 986)

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.
Figure 7. Removing the front cover
Place the CEC enclosure into the service position.
1. Remove the front screws (if present) that secure the enclosure to the rack.
  Figure 8. Removing the front screws
2. Release the side latches and pull the latches to slide out the enclosure assembly.
  Figure 9. Releasing the side latches
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.
  Attention: For proper cooling and airflow, replace the cover before turning on the system.
Figure 10. Removing the service access cover
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.
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.
Figure 11. Location of the ESD pin

Removing the CEC enclosure I2C interface card assembly

About this task

To remove the CEC enclosure I2C interface card, complete the following steps:

Procedure

Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
Open the hinged air baffle.
1. Pull the latches to disengage the air baffle from the chassis.
2. Lift the air baffle up to open it.
Figure 12. Opening the air baffle
Remove the hinged air baffle.
1. Pull the air baffle to disengage it from the chassis clasp .
2. Lift the air baffle up to remove it.
Figure 13. Removing the air baffle
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 .
Figure 14. Removing the fan cage
Remove the USB cable cover on the side of the system chassis. Grasp the top handle of the cover and pull out and away from the side of the chassis. Push the cover toward the rear of the system until the slots on the cover clear the pins on the side of the chassis, then remove the cover. See Figure 32.
Figure 15. Removing the USB cable cover
Disconnect the I2C cable from the I2C connector at the right front area of the CEC enclosure. Pull the cable toward the I2C interface card at the rear center of the enclosure.
To set the adapter latch at the target slot into the open position, rotate the latch on the rear of the system, in the direction shown in Figure 16.
Carefully grasp the adapter by its top edge or tailstock, and remove the adapter from the slot, as shown in Figure 16.
Attention: A pin on the tailstock of the adapter resembles a removable screw. Do not remove this pin. It is required for correct alignment and seating.

Figure 16. Removing a PCIe adapter from a rack-mounted system
Place the removed adapter and cable assembly on an approved ESD surface.

Replacing the CEC enclosure I2C interface card assembly

About this task

To replace the CEC enclosure I2C interface card assembly, complete the following steps:

Procedure

Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
If necessary, remove the adapter from the antistatic package.
Attention: Avoid touching the components and gold connectors on the adapter.
Place the adapter, component-side up, on a flat, antistatic surface.
Attention: A pin on the tailstock of the adapter resembles a removable screw. Do not remove this pin. It is required for correct alignment and seating.
Route the I2C cable to the right front area of the CEC enclosure, using the same method as the cable you removed. Connect the cable to the CEC enclosure I2C connector.
Note: It might be necessary to disconnect the I2C cable from the interface card to route the cable. Reconnect to the interface card once you are ready to install the card.
If the adapter latch at the target slot is not already in the open position, pull the latch into the open position by rotating the latch outwards from its clip on the back of the system, as shown in Figure 17.
Carefully grasp the adapter by its top edge or tailstock, and align the adapter with the slot and its connector on the system backplane, as shown in Figure 17.
On the system, press the adapter firmly into its connector.
To lock the adapter in its slot, rotate the adapter latch in the direction that is shown in Figure 17.
Note: The adapter does not connect to the PCIe bus slot. The adapter latch secures it in the slot location.

Figure 17. Installing or replacing a PCIe adapter in a rack-mounted system
Replace the USB cable cover by inserting the slots on the cover over the pins on the chassis. Grasp the top handle of the cover and pull the cover toward the front of the system. Pull the cover forward until the slots are seated on the pins and the top handle of the cover latches. See Figure 47.
Figure 18. Replacing the USB cable cover
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 66.
3. Push down on the fan cage to seat in the system.
4. Rotate the latches as shown in Figure 66, to lock the fan cage in place.
Figure 19. Replacing the fan cage in a rack-mounted system
Replace the hinged air baffle.
1. Push the air baffle toward the chassis.
2. Fix the air baffle to the chassis by pushing the clasp onto the chassis until it locks into place.
Figure 20. Replacing the air baffle
Close the hinged air baffle.
1. Push down the air baffle toward the chassis.
2. Press the side latches to latch the air baffle to the chassis.
Figure 21. Closing the air baffle

Preparing the CEC enclosure for operation after removing and replacing the I2C interface card assembly

About this task

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

Procedure

Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
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.
Figure 22. Installing the service access cover
Ensure that you have the electrostatic discharge (ESD) wrist strap attached. If not, attach it now.
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.
Figure 23. Placing the CEC enclosure into the operating position
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 Figure 73. The cover snaps into place and has an indentation where you can hold onto it more easily.
3. Replace the shipping screws .
Figure 24. Installing the front cover
Attach the electrostatic discharge (ESD) wrist strap.

Reconnect all cables, except for power cords. See Table 2 and Figure 25.

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

Reconnect the power cords to the CEC enclosure. See Figure 26.
Fasten the power cords to the enclosure using the hook-and-loop fasteners .
Figure 26. Connecting the power cords
Verify that the CEC enclosure has power available. See Figure 77.
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.
Figure 27. Location of the power supplies and LEDs (Models 981, 985, 986)
Wait up to 5 minutes for the CEC enclosure control panel power button LED to flash. See Figure 78.
Note: This ensures 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, I2C interface card and cables, and control panel. You can also call the next level of support.
Figure 28. Control panel LEDs
Close the rear door of the rack.
Exit this service information center parts exchange procedure and return to the procedure that sent you here.