Remove a processor

This task has instructions for removing an assembled processor. This task requires a Torx T30 driver.

About this task

S038

CAUTION

Eye protection should be worn for this procedure.

S040

CAUTION

Protective gloves should be worn for this procedure.

S042

DANGER

danger

Risk of electric shock due to water or a water solution which is present in this product. Avoid working on or near energized equipment with wet hands or when spilled water is present.

Attention

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

• Turn off the corresponding DWC tray that you are going to perform the task on.

• Disconnect all external cables from the enclosure.

• Use extra force to disconnect QSFP cables if they are connected to the solution.

• Each processor socket must always contain a cover. When removing or installing a processor, protect empty processor sockets with a cover.

• Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause connection failures.

• Do not allow the thermal grease on the processor or water loop to come in contact with anything. Contact with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage components, such as electrical connectors in the processor socket. Do not remove the grease cover from the cold plate until you are instructed to do so.

• Before you install a new or replace a processor, update your system firmware to the latest level. See Update the firmware.

• To avoid damaging the water loop, always use the water loop carrier when removing, installing or folding the water loop.

The following illustration shows the location of the processor sockets and memory module connectors on the system board.

Figure 1. Processor socket and memory module connector location

Watch the procedure

• A video of this procedure is available at YouTube.

Procedure

1. Make preparations for this task.
   1. Remove the tray from the enclosure. See Remove a tray from the enclosure.
   2. Remove the tray cover. See Remove the tray cover.
   3. If DIMM comb is installed, remove it. See Remove a DIMM comb.
   4. Remove the memory module, perform one of the following.

      • Remove memory modules that require single-side cooling. See Remove a memory module (single-side cooling).

      • Remove memory modules that require dual-side cooling. See Remove a memory module (dual-side cooling).

   5. Remove the cross braces. See Remove the cross braces.
   6. If DIMM cooling bars are installed, remove them. See Remove a DIMM cooling bar.
   7. Remove the front E3.S drive cage. see Remove an E3.S front drive cage assembly.
   8. Remove the PCIe adapter riser assembly. See Remove a ConnectX-7 NDR 200 adapter riser assembly or Remove a ConnectX-7 NDR 400 adapter riser assembly.
   9. Remove the middle E3.S drive cage. see Remove an E3.S middle drive cage assembly.
   10. Remove the sideband cable kit. See Remove the system management sideband cable kit.
   11. Remove the leakage sensor module. See Remove the leakage sensor.
2. Remove the four PH 1 screws to remove the middle drive cold plates from the water loop.
   Note

   There are two middle drive cold plates per node, make sure to remove both cold plates from the side of water loop where the processor is to be removed.

   Figure 2. Removing middle drive cold plate
   
   
3. Remove the VR cover from the water loop.
   Figure 3. Removing the VR cover
   
   
4. Remove four PH 1 screws to remove the quick connect.
   Figure 4. Removing quick connect screws
   
   
5. Remove four Torx T10 screws to remove the mixing chambers from the power distribution board cold plate with a torque screwdriver set to the proper torque.
   Note

   For reference, the torque required for the screws to be fully tightened/removed is 5.0+/- 0.5 lbf-in, 0.55+/- 0.05 N-M.

   Figure 5. Installing mixing chamber screws
   
   
6. Remove water loop screws (9x Torx T10 screws per node) with a torque screwdriver set to the proper torque.
   Note

   For reference, the torque required for the screws to be fully tightened/removed is 5.0+/- 0.5 lbf-in, 0.55+/- 0.05 N-M.

   Figure 6. Water loop screws installation
   
   
7. Loosen processors properly.
   1. Fully loosen all Torx T30 captive screws on cold plates (8x Torx T30 captive screws per nodes) following the screw sequence label on the shipping bracket, with a torque screwdriver set to the proper torque.
      Note

      • For reference, the torque required for the screws to be fully tightened/removed is 8+/- 0.5 lbf-in, 0.9+/- 0.05 N-m.

      • To prevent damage to components, make sure that you follow the indicated tightening/loosening sequence.

      Figure 7. Screw tightening/loosening sequence on the shipping bracket label
      
      
   2. Rotate all anti-tilt wire bails (8x anti-tilt wire bails for two nodes) inwards to the unlocked position.
      Figure 8. Loosening Torx T30 captive screws
      
      
8. Orient two water loop carriers with the guide pins; then, gently put the two water loop carriers down and ensure they are seated firmly on the water loop.
   Figure 9. Installing water loop carrier
   
   
9. Install water loop carrier screws (14x Phillips #2 screws for two nodes).
   Figure 10. Installing water loop carrier screws
   
   
10. Carefully rotate the water loop so one half is sitting on top of the other half.
    Figure 11. Unfolding water loop
    
    
11. Remove the processor from the retainer.
    1. Lift the handle to release the processor from the retainer.
    2. Carefully hold the processor by its edges; then, lift the processor from the retainer.
       Note

       Do not touch the contacts on the processor.

       Figure 12. Processor removal
       
       
12. Without putting the processor down, wipe the thermal grease from the top of the processor with an alcohol cleaning pad; then, place the processor on a static protective surface with the processor-contact side up.
13. Remove the processor retainer from the underside of the cold plate.
    Note

    The processor retainer will be discarded and replaced with a new one.
    1. Carefully release the retaining clips from the cold plate.
    2. Lift the retainer from the cold plate.
    Figure 13. Processor retainer removal
    
    
14. Wipe the thermal grease from the bottom of the cold plate with an alcohol cleaning pad.