Exchange the CEC enclosure power supply

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.

Remove the CEC power supply

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 POWER7® 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.
Use the CEC enclosure front and rear blue identify LEDs to determine the CEC enclosure to be repaired. Both blue LEDs should be solidly 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. CEC enclosure control panel assembly (Model 961)

Figure 2. CEC enclosure rear LED indicators
Verify the CEC enclosure is in the power-off state. See Figure 3.
1. At the rear of the CEC enclosure, view both CEC enclosure power supply DC GOOD LEDs.
2. Are both DC GOOD (output) LEDs blinking?
  - 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. CEC enclosure power supply LEDs (Model 961)
Disconnect the power cables (E1-J1 and E2-J1) from the CEC with the DC Good LEDs blinking. See Figure 4.
Note: The CEC enclosure power supply LEDs continue to blink for up to 20 seconds while internal power is discharged.
1. Each power cable is looped once around the CEC enclosure power supply handle and secured with a cable tie.
2. Remove the cable tie, unplug the cable and unwrap it from the handle.
Figure 4. Location codes for the CEC enclosure (rear view) (Model 961)
Observe the CEC enclosure control panel green power present icon . See Figure 5.
- If it is off, go to the next step.
- If it is slow blinking, the CEC enclosure is still in the power-off state. DO NOT CONTINUE. Ensure that you have unplugged the correct power cables.
Figure 5. CEC enclosure control panel
Release the CEC enclosure cable management arm and swing it away to allow the CEC power supply to be removed.
1. To release the blue latch, use your finger to push the blue tab away from you, then pull the blue latch toward you. See Figure 6.
2. Gently pull the left end of the cable management arm back to allow access to remove the power supply. See Figure 7.
Figure 6. Releasing the CEC enclosure cable management arm

Figure 7. CEC enclosure cable management arm in position to remove power supply
At the rear of the CEC enclosure, remove the power supply. See Figure 8. Press the locking lever down, use the handle to pull the power supply out of the CEC enclosure.
CAUTION:
This part or unit is heavy, but has a weight smaller than 18 kilograms (39.7 pounds). Use care when lifting, removing, or installing this part or unit.

Figure 8. Removing the power supply, rear view

Install the CEC power supply

Procedure

After removing the old power supply, wait 90 seconds before going to the next step to install the new power supply.
Note: Failure to wait for the SPCN and PHYP code to synchronize their status may cause the fault LED on the new power supply to be falsely lit.
Install the power supply. See Figure 8. Push the power supply in until the orange latch locks in place.
CAUTION:
This part or unit is heavy, but has a weight smaller than 18 kilograms (39.7 pounds). Use care when lifting, removing, or installing this part or unit.
Lift the CEC enclosure cable management arm back into position and secure the blue latch.
Connect the power cables (E1-J1, E2-J1) to both CEC enclosure power supplies. See Figure 9.
Note: The power supply DC Good green LED should blink. See Figure 3.
1. Loop the power cable around the power supply handle and connect it.
2. Secure the cable with the cable tie.
Is the DC Good green LED blinking on one or both power supplies?
- Yes, go to the next step.
- No, ensure the power cables are properly connected. If no cable problem is found, call the next level of support.
Figure 9. CEC enclosure power supply cable loops
Wait up to 5 minutes for the CEC enclosure control panel green power present LED [B] to slow blink, as shown in Figure 1.
Note: This ensures the CEC enclosure is in the power-off state.

Is the green LED blinking?
- 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.
Exit this service information center parts exchange procedure and return to the procedure that sent you here.