Lenovo ThinkServer RD240 Hardware Maintenance Manual page 84

1. When two microprocessors are installed, both must have the same core voltage and core speed.
2. When only one microprocessor is installed, it must be in the socket labeled CPU0. The other socket
must be kept empty.
3. Always install the microprocessor first into the CPU0 socket, and then install another microprocessor
into the CPU1 socket if you want to install two microprocessors.
To install the microprocessor, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Remove the server cover. See Removing the server cover.
3. Remove the microprocessor fan duct. See Removing the microprocessor fan duct.
4. Remove the heat sink. See Removing the heat sink.
5. Press down and push the small handle outward on the microprocessor socket to lift the handle to
the open position.
Figure 49. Lifting the handle
6. Gently press the retainer of the microprocessor socket to open it.
Figure 50. Opening the retainer
7. Remove the protective cover from the microprocessor socket. To avoid damaging the pins in the
microprocessor socket, do not touch the pins while removing the cover.
78
ThinkServer RD240 Hardware Maintenance Manual