Remove a PCIe riser assembly

Use this information to remove a PCIe riser assembly.

Procedure

1. Make preparations for this task.
   1. 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).
      Important

      The primary adapter is always installed to the right node (node 2/4/6/8/10/12), while the auxiliary adapter is installed to the left node (node 1/3/5/7/9/11). As an auxiliary node requires a connected and functioning primary node to function, always follow the following power on/off sequence:

      • When powering off the nodes, always power off node 1/3/5/7/9/11 (auxiliary node) first.
      • When power on the nodes, always power on 2/4/6/8/10/12 (primary node) first.
   2. 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.

   3. Remove the tray cover (see Remove the tray cover).
2. There are different procedures for installing the PCIe riser assembly with a general adapter or a ConnectX-6 adapter, follow the corresponding steps to complete the removal procedures.
   PCIe riser assembly with general adapters

   1. Loosen the captive screw on the PCIe riser assembly.

   2. Carefully grasp the PCIe riser-cage assembly by its edges and remove it out of the node.

      Figure 3. PCIe riser assembly removal
      
      

   PCIe riser assembly with ConnectX-6 adapter

   1. Loosen the clamp bracket captive screw and remove it out of the node.

      Figure 4. Clamp bracket captive screw removal
      
      

   2. Remove the two screws; then, remove the heatpipe beam out of the node.

      Figure 5. Heatpipe beam removal
      
      

   3. Remove the screw and loosen the captive screw on the PCIe riser assembly; then, carefully grasp the PCIe riser-cage assembly by its edges and remove it out of the node.

      Figure 6. PCIe riser assembly removal
      
      

   4. Remove the cold plate if needed.

      1. Remove the hex screw and three Torx T10 screws.

      2. Remove the cold plate out of the node.

         Figure 7. Cold plate removal