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Remove the GPU baseboard

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

About this task

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:
  • Two torque screwdrivers
  • Two Torx T15 extended bits (300 mm long)
  • One Torx T8 magnetic extended bit (100 mm long)
  • One B300 jig
  • One UltraPass connector removal tool
  • One OSFP card sideband cable press tool
  • Alcohol cleaning pads

Procedure

  1. Make preparation for this task.
    1. Pull the system shuttle out of the chassis, and place it onto the lift platform. See Remove the system shuttle.
    2. Remove the rear fan bulkhead. See Remove the rear fan bulkhead.
    3. Remove the GPU shuttle See Remove the GPU shuttle.
    4. Disconnect the cables from the GPU baseboard.
      Note
      To disconnect the UltraPass cables, refer to steps 3 to 6 in Remove an OSFP card and the support tray.
    5. Remove all the GPU and heat sink modules. See Remove a GPU and heat sink module.
  2. Remove the NVSwitch heat sink cover.
    1. Loosen the four screws securing the cover.
    2. Lift the cover out of the heat sink.
    Figure 1. NVSwitch heat sink cover removal
    NVSwitch heat sink cover removal
  3. 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 ± 0.024 newton-meters, 5.3 ± 0.212 inch-pounds.
    Figure 2. Screw removal
    Screw removal
  4. Remove the GPU baseboard.
    1. Extend the two handles on both sides of the GPU baseboard.
    2. Hold the two handles, and lift the GPU baseboard out of the GPU shuttle.
    Figure 3. GPU baseboard removal
    GPU baseboard removal

After you finish

If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.