Removing and replacing a PCIe riser: 2145-SV2 and 2145-SA2

Use this procedure to remove and replace a Peripheral Component Interconnect Express (PCIe) riser in a node canister with a new one received from stock.

1. Identify the node canister with the faulty adapter. Identify any dependencies on the node canister by using the management GUI. Understand the impact of any dependencies and resolve them, if necessary.
2. Shut down the node using the service assistant.
3. Identify the location of the PCIe riser that requires replacement. The Event Log contains the enclosure MTM and serial number, node canister (slot number and serial number), and adapter slot number.
4. Locate the node that requires servicing by its MTM and S/N, which are labeled on the enclosure front left cover and the node rear. At the rear of the node, locate the node canister by finding its serial number on the release handles.
5. Confirm that the node canister is shut down by observing that the status LED indicator, which should blink slowly.
6. Label each cable connection or record all cables that are connected to the node canister.
   This information is used to reconnect the canister later.
7. Remove the cables from the node canister.
8. Record the serial of each SFP device as you remove them from the adapter ports. You need to put them back in the same ports later.
9. Remove the node canister, as described in Removing and replacing the node canister in the node: 2145-SV2 and 2145-SA2.
10. Place the canister on a flat, level surface for servicing, with its lid facing up.

Removing the PCIe riser

11. Remove the cover of the node canister and set it aside, as described in Removing and replacing the cover of the canister: 2145-SV2 and 2145-SA2.
12. At the rear end of the node canister, locate the PCIe riser that is to be replaced. The adapter slots are numbered 1 - 3, bottom to top, as shown in Figure 1.

13. Lift the adapter and PCIe riser from the canister.
14. Press the adapter out of the PCIe socket of the riser.
    Important: Adapters with a large SFP cage, such as the 4-port Fibre Channel adapter, have limited clearance between the external edge of the SFP cage and the slot of the PCIe riser. When you remove or insert an adapter, it may be necessary to start the removal at the bracket end of the adapter, so that the adapter is removed at a slight angle, rather than square to the PCIe slot.
15. Grasp the side edges of the PCIe riser and carefully lift up to remove it from the node.
16. Place the riser-card assembly on a flat, static-protective surface.

Replacing the PCIe riser

17. Align the adapter with the PCIe socket of the riser and press the adapter into place. Ensure that the adapter is fully seated in the riser; the bracket of the adapter must be aligned correctly, as shown in Table 1.

    Table 1. Aligning the bracket of the host interface adapter

    Correct Alignment	Incorrect alignment

18. Align the PCIe riser so that the adapter SFPs face out of the node canister and the PCIe connector of the riser faces down into the PCIe socket of the canister.
19. Carefully press the PCIe riser into place.
20. Replace the lid of the node canister, as described in Removing and replacing the cover of the canister: 2145-SV2 and 2145-SA2.
21. Reinsert the node canister, as described in Removing and replacing the node canister in the node: 2145-SV2 and 2145-SA2.
22. Insert any SFP devices that were removed in step 8 into the adapter.
23. Reconnect the cables to the rear of the node canister. Use the information that you collected at step 6 to identify the correct ports.
24. Verify that the error is cleared from the Event Log.