Powering Off An Expansion Unit - IBM Power System POWER7 Series Common Service Procedures

2. Determine which SCSI adapter you plan to remove the cables or devices from.
3. Adapter slots are numbered on the rear of the system unit, record the slot number and location of
each adapter being removed.
4. Ensure that any processes or applications that might use the adapter are stopped.
5. Enter the system diagnostics by logging in as root user or as the CE login user. Type the diag
command on the AIX command line.
6. When the DIAGNOSTIC OPERATING INSTRUCTIONS menu displays, and press Enter. The
FUNCTION SELECTION menu appears.
7. From the FUNCTION SELECTION menu, select Task Selection, and then press Enter.
8. From the Task Selection list, select Hot Plug Manager, and select PCI Hot Plug Manager.
9. From the PCI Hot Plug Manager menu, select Unconfigure a Device, and then press Enter.
10. Press F4 or ESC+4 to display the Device Names menu.
11. Select the adapter from which you are removing the cables or devices in the Device Names menu.
12. In the Keep Definition field, use the tab key to answer Yes.
13. In the Unconfigure Child Devices field, use the Tab key to answer Yes, then press Enter. The ARE
YOU SURE screen is displayed.
14. Press Enter to verify the information. A successful deconfiguration is indicated by the OK message
displayed next to the Command field at the top of the screen.
15. Press F4 or ESC+4 twice to return to the Hot Plug Manager menu.
16. Select replace/remove PCI Hot Plug adapter.
17. Select the slot that has the adapter you want to remove the cables or devices from in the system.
18. Select Remove.
Note: A fast flashing amber LED located at the back of the machine indicates the slot that you
selected.
19. Press Enter. This places the adapter in the action state, meaning it is ready to be removed from the
system. (You do not need to remove the adapter, unless it makes removing the cables attached to it
easier).

Powering off an expansion unit

This procedure provides detailed instructions for powering off an expansion unit.
Before beginning, read this entire procedure. If there are procedural steps that cannot be performed at
this time, the procedure must be delayed until a later time.
Attention: If the server is not managed by a management console and there is no IBM i service
partition, the expansion unit power cannot be turned off with the server power turned on.
Attention: Do not use this procedure to replace disk units that are supported under device concurrent
maintenance. Use the device concurrent maintenance procedure instead.
Attention: Do not use this procedure on the system unit or the system unit's integrated expansion unit.
For systems and system integrated expansion units see Powering on and powering off a system.
Notes:
1. References to the console in this procedure refer to the console of the logical partition in which you
are working.
2. Throughout this procedure, the term HSL I/O bridge is interchangeable with RIO adapter.
3. Throughout this procedure, the term tower is interchangeable with expansion unit.
Common service procedures
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