Remove the H100 GPU complex

Follow instructions in this section to remove the H100 GPU complex. The procedure must be executed by a trained technician.

About this task

S036

18 - 32 kg (39 - 70 lb)	32 - 55 kg (70 - 121 lb)

CAUTION

Use safe practices when lifting.

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.
• Two people and one lifting device on site that can support up to 400 lb (181 kg) are required to perform this procedure. If you do not already have a lifting device available, Lenovo offers the Genie Lift GL-8 material lift that can be purchased at Data Center Solution Configurator. Make sure to include the Foot-release brake and the Load Platform when ordering the Genie Lift GL-8 material lift.

Note

Make sure you have the required tools listed below available to properly replace the component:

• Torque screwdriver which can be set to 0.6 newton-meters, 5.3 inch-pounds
• Torx T15 extended bit (6-inch long)

Procedure

1. Make preparation for this task.
   1. Remove all the power supply units. See Remove a hot-swap power supply unit.
   2. Remove all the front fans. See Remove a hot-swap fan (front and rear).
   3. Remove all the 2.5-inch hot-swap drives and the drive bay fillers (if any) from the drive bays. See Remove a 2.5-inch hot-swap drive.
   4. Pull the 8U GPU shuttle out of the chassis, and place it onto the lift platform. See Remove the 8U GPU shuttle.
   5. Remove the cable cover. See Remove the cable cover.
   6. Remove the power complex. See Remove the power complex.
   7. Remove all the rear fan control board assemblies. See Remove a rear fan control board assembly.
   8. Remove all the GPU air ducts. See Remove an H100 GPU air duct.
   9. Disconnect the cables from the GPU baseboard.
2. Disengage the PCIe switch shuttle from the 8U GPU shuttle.
   1. Press the two blue release latches.
   2. Rotate the two release levers until they are perpendicular to the PCIe switch shuttle.
   3. Pull the PCIe switch shuttle forward until it stops.
      Note

      Push the two release levers back until they lock into place after pulling out the PCIe switch shuttle to avoid damages.

      Figure 1. PCIe switch shuttle removal to stop position
      
      
3. Flip over the front PCIe switch cable harness.
   1. Unfasten the ten screws marked with C on both sides of the 8U GPU shuttle.
   2. Flip over the front PCIe switch cable harness, and gently place it on the I/O cover.
   Figure 2. Flipping over the front PCIe switch cable harness
   
   
4. Unfasten the seventeen Torx T15 captive screws on the GPU baseboard.
   Note

   Loosen or tighten the screws with a torque screwdriver set to the proper torque. For reference, the torque required for the screws to be fully loosen or tighten is 0.6 newton-meters, 5.3 inch-pounds.

   Figure 3. Screw removal
   
   
5. Remove the GPU complex.
   1. Extend the two handles (1) on both sides of the GPU baseboard.
   2. Hold the two handles (1), and lift the GPU complex out of the 8U GPU shuttle.
   Attention

   Make sure two people stand on either side of the GPU complex, and lift it by holding the two handles (1).

   Figure 4. GPU complex removal