User Service Guide, Third Edition - HP Integrity rx4640 Server

3. Slide the processor extender board down until it begins to seat in the socket located on the
midplane riser board.
4. Push the extraction levers inward to the locked position in order to fully seat the processor
extender board into the socket on the midplane riser board.
5. Replace the front cover. See “Replacing the Front Cover” (page 35).
6. Replace the front bezel. See “Replacing the Front Bezel” (page 34).
7. If rack mounted, slide the server into the rack until it stops. See “Inserting the Server into
the Rack” (page 32).
Removing and Replacing a Processor
Processors are located on the top and bottom surfaces of the processor extender board.
WARNING! Ensure that the server is powered off and all power sources have been disconnected
from the server prior to removing or replacing a processor.
Voltages are present at various locations within the server whenever an AC power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
Processor Load Order
Processor modules are housed on the processor extender board located under the top cover in
the top service bay. The processor extender board can hold between one and four processor
modules. CPU 0 and CPU 1 are located on the top of the processor extender board and CPU 2
and CPU 3 are located on the bottom. Processors must be installed in a specific order as detailed
in Table 4-5. Figure 4-13 shows the processor slot locations on the processor extender board.
Table 4-5 Processor Load Order
SocketProcessor Modules
CPU 0First
CPU 1Second
CPU 2Third
CPU 3Fourth
Removing and Replacing a Processor 45