Preparing the system to remove and replace a PCIe adapter in the EMX0 PCIe Gen3 I/O expansion drawer with the power turned on in AIX

Learn about steps you must complete before you remove a PCIe adapter in the EMX0 PCIe3 expansion drawer.

1. Complete the prerequisite tasks. For instructions, see Before you begin.
2. Identify the system that you will be working on. For instructions, see Enabling enclosure or server indicators with the ASMI.
3. You must take the PCIe adapter offline before removing and replacing a PCIe adapter with the system power turned on (hot-plugging). Before taking an adapter offline, the devices attached to the adapter must be taken offline as well. This action should be done by a system administrator. Taking the PCIe adapter offline prevents a service representative or user from causing an unexpected outage for other users of the system.
4. Before hot-plugging adapters for storage devices, ensure that the file systems on those devices are unmounted.
5. Ensure that any processes or applications that might use the adapter are stopped.
6. To identify the failed PCIe adapter by using the diagnostics command, complete the following steps:
   1. Log in as root user.
   2. At the command line, type smitty.
   3. Select Devices.
   4. Select PCI Hot Plug Manager, and then press Enter.
   5. Select Unconfigure a Device, and then press Enter.
   6. Press F4 (or Esc +4) to display the Device Names menu.
   7. Select the adapter you are removing in the Device Names menu.
   8. Use the Tab key to answer NO to Keep Definition. Use the Tab key again to answer YES to Unconfigure Child Devices, and then press Enter. The ARE YOU SURE screen displays.
   9. Press Enter to verify the information. Successful unconfiguration is indicated by the OK message displayed next to the Command field at the top of the screen.
   10. Press F4 (or Esc +4) twice to return to the Hot Plug Manager menu.
   11. Select replace/remove PCI Hot Plug adapter.
   12. Select the slot that has the adapter to be removed from the system.
   13. Select remove. The amber LED for the PCI adapter flashes for the slot has been identified.
   14. Press Enter. This places the adapter in the action state, meaning it is ready to be removed from the system.
7. If applicable, open the rack door at the rear of the system.
8. Attach the electrostatic discharge (ESD) wrist strap. Your EMX0 PCIe3 expansion drawer has an ESD pin on the rear of the drawer. Attach the ESD wrist strap to the ESD pin on the rear of the drawer.
   Attention:

   • Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.
   • When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is used for static control. It does not increase or decrease your risk of receiving electric shock when using or working on electrical equipment.
   • If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds.
   Figure 1. Location of the ESD pin on the rear of the EMX0 PCIe3 expansion drawer

   
9. At the rear of the EMX0 PCIe3 expansion drawer, put the cable management bracket in the service position. See Figure 2.
   1. Pull out the quarter-turn fasteners (B) and turn them to disengage them while you lift the cable management bracket (A) to its raised position (1).
   2. Turn the quarter-turn fasteners (B) to engage and lock the bracket into position.
   Figure 2. Placing the cable management bracket in the service position

   
10. Locate the PCIe adapter LEDs.
    Note: There are two LEDs associated with each PCIe adapter. The following LED states indicate the status of the PCIe adapter:

    • (B) Indicates that the PCIe adapter is operating correctly. The green power LED (top LED) is lit solid and the amber fault LED (bottom LED) is off.
    • (C) Indicates that the PCIe adapter is not operating correctly. Both the green power LED (top LED) and the amber fault LED (bottom LED) are lit solid.
    • (D) Indicates the faulty or failed PCIe adapter was selected by using the identify function. The green power LED (top LED) may or may not be lit and the amber fault LED (bottom LED) is flashing.
    Figure 3. EMX0 PCIe3 expansion drawer PCIe adapter LEDs