Remove the power distribution board

Use this information to remove the power distribution board.

About this task

S001

DANGER

danger

Electrical current from power, telephone, and communication cables is hazardous.

To avoid a shock hazard:

• Connect all power cords to a properly wired and grounded electrical outlet/source.
• Connect any equipment that will be attached to this product to properly wired outlets/sources.
• When possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• The device might have more than one power cord, to remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

Attention

• Read the following sections to ensure that you work safely.

  • Installation Guidelines

  • Safety inspection checklist

• Turn off the corresponding DWC tray that you are going to perform the task on.

  Note

  If Shared I/O adapters are installed, power off the auxiliary node (node 1/3/5/7/9/11) first, and then power off the primary node (node 2/4/6/8/10/12).
• Disconnect all external cables from the enclosure.

  Note

  Use extra forces to disconnect QSFP cables if they are connected to the solution.

Procedure

1. Make preparations for this task.
   1. Remove the tray (see Install a DWC tray in the enclosure).
      Attention

      For safety, use the lift tool to remove the tray from the rack.

   2. Remove the tray cover (see Remove the tray cover).
   3. Remove the water loop (Remove the water loop in SD650 V2 tray).
2. Remove the power distribution board.
   1. ❶ Remove the five Phillips #1 screws (per node).
   2. ❷ Gently pull the power distribution board connector to disconnect it from the system board.
   3. ❸ Carefully pull the power distribution board inwards to disengage it from the node.
   Note

   Use a 3/16" hex head screwdriver to ensure the proper removal and installation.

   Figure 1. Power distribution board removal