User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

4. Use the MP Command menu PS command to check details about the hardware component
you plan to power off.
The PS command enables you to check the status of the cabinet, system backplane, MP Core
I/O, PCI power domains — or bricks — in the I/O card cage, and cells.
5. Use the MP Command menu PE command to power off the hardware component.
Using the PE command, you can power on or off the cabinet (including all cells and I/O in
the cabinet), individual cells, or PCI power domains (bricks).
Using the Command menu PE command to manage cabinet power is equivalent to using
the front panel power switch.
6. If you need to disable all power in the entire cabinet, you also must disconnect all power
cords in order to disable all housekeeping power.
NOTE: Ensure that all power cords are labeled to indicate which receptacle each cord plugs
into. Because of power redundancy capabilities, it is important that each power cord plugs
into its proper receptacle.
Also, ensure that the cabinet power has been turned off before disconnecting any power
cords.
7. Perform the hardware removal and replacement procedure for the powered off component.
8. If needed, reconnect all power cords to the receptacles where they belong.
9. Use the MP Command menu PE command to power on the hardware component that you
powered off.
10. Use the MP Command menu PS command to confirm the status of the newly replaced
component.
NOTE: You may need to allow time for some components to complete power on self tests
(POST) before a complete status is available.
Removing and Replacing a DDS-4 or DVD Drive
The DDS-4 or DVD drive is located in the front of the chassis. The system power to this component
must be removed before attempting to remove or replace it.
NOTE: When installing or replacing a DDS-4 component, ensure that only DDS-4 components
with a replacement part number of C5686-67204, or an exchange part number of C5686-69204,
are used.
Refer to the, “Shutting Down nPartitions and Powering Off Hardware Components” section, for
more information.
Removing and Replacing a DDS-4 or DVD Drive 97