User Service Guide, Third Edition - HP Integrity rx4640 Server

power cord be installed in the appropriate power cord receptacle and attached to a power cord
support bracket.
WARNING! Be careful when installing a hot-swappable power supply. It is heavier than it
appears.
CAUTION: The empty hot-swappable PSU slot P 1 must remain closed with the supplied metal
cover when a second PSU is not used. Your server may be damaged due to overheating if the
cover does not remain in place.
CAUTION: If the server is powered down, install the hot-swappable PSU into the server before
attaching the new power cord at the rear of the server. Failure to observe this caution results in
damage to the server.
Removing a Hot-Swappable Power Supply
To remove a hot-swappable PSU, follow these steps:
CAUTION: Be careful when removing the hot-swappable power supply. It is heavier than it
appears.
1. If rack mounted, slide the server back out of the rack until it stops. See “Extending the Server
From the Rack” (page 31).
2. Remove the power cord plug from the power receptacle.
3. Loosen the captive thumbscrew located at the top left of the PSU.
4. Grasp the handle and pull the PSU out of the server. Figure 4-40 shows how to remove a
PSU.
Replacing a Hot-Swappable Power Supply
To remove a hot-swappable PSU, follow these steps:
1. Supporting the PSU with both hands, slide it into the empty slot until it plugs into the socket
on the internal power distribution board.
2. Hand tighten the thumbscrew.
3. Install the power cord into the PSU socket.
4. Apply power to the new PSU and the LED should immediately turn on.
5. If rack mounted, slide the HP server back into the rack until it stops. “Inserting the Server
into the Rack” (page 32).
84 Removing and Replacing Components