Remove model 55x, 720, or attached expansion-unit PCI adapters with the system power on in AIX

You might need to remove a PCI adapter. Use the procedure in this section to perform this task.

1. Perform the prerequisite tasks described in Before you begin.
2. Take appropriate precautions for avoiding electric shock and handling static-sensitive devices. For information, see Avoiding electric shock and Handling static-sensitive devices.
3. If you are removing a failing PCI adapter, see Identify a failing part. If you are removing the PCI adapter for other reasons, continue to the next step.
4. If you are removing a PCI adapter in a rack-mounted system or expansion unit, follow these steps. If you are servicing a stand-alone system, go to the next step.
   • For the 55x system unit, the 0595, 5095, or D20 expansion unit, follow these steps:
     1. Open the front rack door.
     2. Place the system or expansion unit in the service position. See Place the rack-mounted system or expansion unit in the service position.
     3. Remove or open the service access cover as follows:
        • Remove the service access cover from the model 285, 51x, 52x, 55x, 710, or OpenPower 720
        • Open the model 0595, 5095, or D20 service access cover
   • For all other rack-mounted expansion units, follow these steps:
     1. Open the back rack door.
     2. Remove the cover or covers. For instructions on removing covers, select the appropriate procedure from the following:
        • Remove the back door from the 5074, 5079, and 5094 expansion unit. These steps also apply to the 5294, 8294, and 9194 expansion units. When the cover is removed, remove the PCI adapter access plate.
        • Remove the back cover from the 0588 expansion unit. These steps also apply to the model 5088.
        • Open the model 0595, 5095, or D20 service access cover
5. If you are removing a PCI adapter in a stand-alone system or expansion unit, follow these steps:
   • Remove the service access cover from the model 285, 51x, 52x, 55x, 710, or OpenPower 720
   • Remove the back door and cover from the 5095 expansion unit
6. Determine which adapters you plan to remove.
7. Record the slot number and location of each adapter being removed. Adapter slots are numbered on the rear of the system unit.
8. Ensure that any processes or applications that might use the adapter are stopped.
9. Follow these steps to place the adapter in the action state using the PCI Hot-Plug Manager:
   1. Enter the system diagnostics by logging in as root user or as the celogin user, type diag at the AIX command line.
   2. When the DIAGNOSTIC OPERATING INSTRUCTIONS menu displays, press Enter.
   3. At the FUNCTION SELECTION menu, select Task Selection, then press Enter.
   4. At the Task Selection list, select PCI Hot Plug Manager.
   5. Select Unconfigure a Device, 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, then press Enter. The ARE YOU SURE window 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 device to be removed from the system.
   13. Select remove. A fast-blinking amber LED located at the back of the machine near the adapter indicates that 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.
10. Label, and then disconnect all cables attached to the adapter you plan to remove.
11. Rotate the adapter locking latch A counterclockwise.
12. Lift the black tab B attached to the adapter retainer assembly, and keep the black tab in a vertical position.
13. Carefully grasp the PCI adapter by its top edge or upper corners, and remove it from the system. Store the adapter in a safe place.
    Figure 1. PCI adapter removed from the rack-mounted system unit

    
    Figure 2. PCI adapter removed from the stand-alone system unit

    
14. If you plan to install another adapter into the vacated slot, go to Install model 285, 52x, or attached expansion-unit, PCI adapters with system power on in AIX; otherwise, continue with the next step.
15. Seal the expansion slot using an expansion-slot cover.
16. Lower the plastic retainer seat over the PCI adapter faceplate.
17. Rotate the locking latch clockwise until it clicks into the locked position.
18. Continue to follow the screen instructions until you receive a message that the adapter removal is successful. Successful removal is indicated by the OK message displayed next to the Command field at the top of the screen.
19. If you have other adapters to remove, press the F3 key to return to the PCI Hot-Plug Manager menu and then return to step 10.

    OR

    If you do not have other adapters to remove, continue with the next step.

20. Press F10 to exit the Hot-Plug Manager.
21. Run the diag -a command. If the system responds with a menu or prompt, follow the instructions to complete the device configuration.
22. Replace or close the covers.
23. On a rack-mounted system, close the rear rack door.
24. Place the rack-mounted system or expansion unit in the operating position if you are servicing a rack-mounted system. If you are servicing a stand-alone system, continue to the next step.
25. To replace the PCI adapter, see Replace model 55x, 720, or attached expansion-unit, PCI adapters.