Disengage the PCIe expansion node from a compute node

Use this information to disengage the PCIe expansion node from a compute node before replacing components in the compute node underneath.

Before you disengage the PCIe expansion node from a compute node:
  1. Read the following section(s) to ensure that you work safely.
  2. If the compute-expansion node assembly is installed in the enclosure, remove it (see Remove the compute-expansion node assembly from the enclosure).

  3. Remove the rear cable cover (see Remove the rear cable cover).

Complete the following steps to disengage the PCIe expansion node from a compute node.
  1. If the front riser assembly is installed in the expansion node, disconnect the front riser auxiliary power cable from the expansion node.
    Figure 1. Disconnecting the front riser auxiliary power cable
    Disconnecting the front riser auxiliary power cable
  2. Disconnect the four PCIe cables.
    Figure 2. Disconnecting the four PCIe cables
    Disconnecting the four PCIe cables
    Note: Make sure all four PCIe cables are disconnected.
  3. Loosen the two captive screws near the front of the expansion node; then, slide the expansion node slightly backward to disengage it from the compute node.
    Figure 3. Disengaging the expansion node from the compute node
    Disengaging the expansion node from the compute node
  4. Pivot the disengaged expansion node with the bottom next to the compute node as illustrated.
    Figure 4. Pivoting the expansion node away from the compute node
    Pivoting the expansion node away from the compute node

After you disengage the PCIe expansion node from the compute node, see Replace components in the compute node for replacement of the components in the compute node.