Remove the power bus bar

Procedure

1. Make preparations for this task.
   1. Power off the node (see Power off the node); then, disconnect all external cables from the node.
   2. Remove the node from the chassis (see Remove a node from the chassis); then, carefully lay the node on a flat, static-protective surface, orienting the node with the front toward you.
      Note

      • When removing the node, note the node tray number and make sure to install the node in the same tray from which it was removed. Reinstalling the node into a different tray requires the node to be reconfigured.
      • For safety, make sure to hold the node with both hands when lifting the node.
   3. Remove the top cover (see Remove the top cover).
   4. If the GPU air duct is installed in the node, remove it (see Remove the GPU air duct).
   5. If the PCIe riser assembly is installed, remove it from the node and disconnect the PCIe cables from the system board (see Remove the PCIe riser assembly and Internal cable routing).
2. Remove the six outer screws from the power bus bar.
   Figure 1. Removal of outer screws of the power bus bar
   
   
3. Remove the power bus bar.
   1. Remove the main PDB screw from the power bus bar.
   2. Remove the main system board screw from the power bus bar.
   3. Lift the power bus bar out of the node.
      Figure 2. Removal of the power bus bar