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Install the GPU baseboard

Follow instructions in this section to install 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.
  • Touch the static-protective package that contains the component to any unpainted metal surface on the server; then, remove it from the package and place it on a static-protective surface.
  • 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.
  • Make sure to inspect the connectors and sockets on the GPU and the GPU baseboard. Do not use the GPU or the GPU baseboard if its connectors are damaged or missing, or if there are debris in the sockets. Replace the GPU or the GPU baseboard with a new one before continuing the installation procedure.
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
Firmware and driver download: You might need to update the firmware or driver after replacing a component.

Procedure

  1. (Optional) Remove the new GPU baseboard from the package box.
    1. Extend the two handles on both sides of the GPU baseboard.
    2. Hold the two handles, and remove the GPU baseboard out from the package box.
    Figure 1. Removing the GPU baseboard from the package box
    Removing the GPU baseboard from the package box
  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 2. NVSwitch heat sink cover removal
    NVSwitch heat sink cover removal
  3. Install the GPU baseboard.
    1. Hold the handles on both sides of the GPU baseboard in the correct orientation as illustrated; then, align the GPU baseboard with the adapter plate, and gently place it onto the adapter plate.
    2. Push the two handles down.
    Figure 3. GPU baseboard installation
    GPU baseboard installation
  4. Follow the sequence shown in the illustration below to fasten the seventeen Torx T15 captive screws to secure the GPU baseboard.
    Important
    Do not overtighten the screws to avoid damage.
    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 4. Screw installation
    Screw installation
  5. Install the NVSwitch heat sink cover.
    1. Place the cover onto the heat sink.
    2. Fasten the four screws to secure the cover.
    Figure 5. NVSwitch heat sink cover installation
    NVSwitch heat sink cover installation

After you finish

  1. Reinstall all the GPU and heat sink modules. See Install a GPU and heat sink module.
  2. Reconnect the cables to the GPU baseboard. See GPU baseboard cable routing and OSFP card cable routing for more information.
    Note
    To reconnect the OSFP card UltraPass and sideband cables, refer to steps 4 to 8 in Install an OSFP card and the support tray.
  3. Reinstall the GPU shuttle. See Install the GPU shuttle.
  4. Reinstall the rear fan bulkhead. See Install the rear fan bulkhead.
  5. Reinstall the system shuttle. See Install the system shuttle.
  6. Complete the parts replacement. See Complete the parts replacement.