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Install the power distribution board

Follow instructions in this section to install the power distribution board. 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.
  • Install the 12V power distribution board when using 3200W power supplies, and the 54V power distribution board when using 3800W power supplies.
  • For configurations using the 12V power distribution board, the system board power cable connects to the PSU interposer; for configurations using the 54V power distribution board, it connects to the power distribution board.
  • The following illustration uses the 12V power distribution board as an example, but the removal and installation procedures are identical for the 54V board.
Note
Make sure you have a torque screwdriver available to properly replace the component.
Firmware and driver download: You might need to update the firmware or driver after replacing a component.

Procedure

  1. Align the power distribution board with the standoffs on the tray; then, lower the power distribution board into the tray.
  2. Fasten the fourteen screws to secure the power distribution board.
    Note
    Tighten the screws with a torque screwdriver set to the proper torque. For reference, the torque required for the screws to be fully tightened is 0.9 ± 0.2 newton-meters.
    Figure 1. Power distribution board installation
    Power distribution board installation
  3. Connect the cables to the power distribution board. See below for more information.
  4. Reinstall the compute tray.
    1. Flip the compute tray back to its original position.
    2. Tighten the two screws at the rear to secure the tray.
    Figure 2. Compute tray reinstallation
    Compute tray reinstallation

After you finish

  1. Reinstall the PSU interposer. See Install the PSU interposer.
  2. Reinstall the system shuttle. See Install the system shuttle.
  3. Complete the parts replacement. See Complete the parts replacement.