Remove the upper processor board (CPU BD)

Follow the instructions in this section to remove the upper processor board (CPU BD).

S002

CAUTION

The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

Important

• When removing the memory modules, label the slot number on each memory module, remove all the memory modules from the upper processor board (CPU BD), and set them aside on a static-protective surface for reinstallation.

• When disconnecting cables, make a list of each cable and record the connectors the cable is connected to, and use the record as a cabling checklist after installing the new upper processor board (CPU BD).

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See Power off the server.

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

• If the server is installed in a rack, remove the server from the rack. See Remove the server from rails.

Procedure

1. Make preparation for the task.
   1. Remove the front top cover. See Remove the front top cover.
   2. Remove the upper processor board (CPU BD) air baffle. See Remove the upper processor board (CPU BD) air baffle.
   3. If you are replacing the upper processor board (CPU BD), remove all the memory modules and PHMs from the upper processor board (CPU BD). See Remove a memory module and Remove a processor and heat sink.
      Important

      To avoid component damage, DO NOT remove or install memory modules or PHMs when the upper processor board (CPU BD) is removed from the chassis.
2. Disconnect the UPI module cables from the upper processor board (CPU BD).
   Figure 1. Disconnecting UPI module cables

   
   
   
   1. Open the cable clips and unhook the UPI module cables.
   2. Disconnect the UPI module cables from the upper processor board (CPU BD).
3. Disconnect the internal sideband cable from the upper processor board (CPU BD) and lower processor board (MB).
   Figure 2. Disconnecting internal sideband cable

   
   
   
4. Disconnect the internal UPI cables.
   Figure 3. Disconnecting internal UPI cables

   
   
   
   1. Disconnect the internal UPI cables from the upper processor board (CPU BD).
   2. Lift the internal UPI cables from the cable clips.
5. Disconnect the power cables from the upper processor board (CPU BD).
   Figure 4. Disconnecting upper processor board (CPU BD) power cables

   
   
   
6. Make a list of each remaining cable and record the connectors the cable is connected to; then, disconnect and remove all the remaining cables on the upper processor board (CPU BD).
7. Disengage the upper processor board (CPU BD).
   Figure 5. Disengaging upper processor board (CPU BD)

   
   
   
   1. Loosen the three thumbscrews. Use a screwdriver if needed.
   2. Open the plunger to the unlocked position.
8. Grasp the blue handles and remove the upper processor board (CPU BD).
   Figure 6. Removing upper processor board (CPU BD)