Removing And Replacing The Power Supplies; Power Supply Load Order - HP Integrity rx4640 Service Manual

9. Replace the three chassis hot-swappable fan units. See
Fan Unit" (page
10. Replace the processor extender board. See
(page 44).
11. Replace the memory extender board. See
12. Replace the top cover. See
13. Replace the front cover. See
14. Replace the front bezel. See
15. If rack mounted, slide the server back into the rack until it stops. See
into the Rack" (page

Removing and Replacing the Power Supplies

The HP Integrity rx4640 server has two 200-240 VAC hot-swappable power supply units (PSU).
These PSUs are located at the rear of the HP server. The supported configuration of the server
requires a minimum of one PSU installed.
CAUTION:
follow ESD safety precautions can result in damage to the server.
NOTE:
A hot-swappable device does not require interaction with the operating system before
the device is removed from or installed into the server.
The AC power to the server does not have to be off to remove or replace a hot-swappable power
supply.

Power Supply Load Order

The supported configuration of your HP Integrity rx4640 server requires a minimum of one
200-240 VAC PSU. A second, optional hot-swappable PSU, may be installed to provide N+1
capability. Each PSU requires a separate power cord.
The left side (viewing from the rear) hot-swappable PSU is identified as P 0, the second
hot-swappable power supply is identified as P 1. Each hot-swappable PSU requires a separate
55).
"Replacing the Top Cover" (page
"Replacing the Front Cover" (page
"Replacing the Front Bezel" (page
32).
Observe all ESD safety precautions before attempting this procedure. Failure to
"Replacing a Hot-Swappable Chassis
"Replacing the Processor Extender Board"
"Replacing the Memory Extender Board" (page
36).
Removing and Replacing the Power Supplies
35).
34).
"Inserting the Server
38).
83