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Remove the power distribution board

Follow instructions in this section to remove 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.
  • 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.
  • The following illustration uses the 12V power distribution board as an example, but the removal and installation procedures are identical for the 54V board.

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 PSU interposer. See Remove the PSU interposer.
  2. Disconnect the cables from the power distribution board.
    1. Unfasten the two screws at rear to loosen the compute tray.
    2. Flip over the compute tray and disconnect all the cables from the power distribution board.
    Note
    Press the release latch before pulling the system board power cable connector away from the 54V power distribution board.
    Figure 1. Power distribution board cable disconnection
    Power distribution board cable disconnection
  3. Unfasten the fourteen screws to remove the power distribution board from the tray.
    Figure 2. Power distribution board removal
    Power distribution board 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.
  • If you plan to recycle the component, see Disassemble the power distribution board for recycle.