Lenovo ThinkServer RD220 Hardware Maintenance Manual page 200

• If you are installing a microprocessor that has been removed, make sure that it is paired with its original
heat sink or a new replacement heat sink. Do not reuse a heat sink from another microprocessor; the
thermal grease distribution might be different and might affect conductivity.
• If you are installing a new heat sink, remove the protective backing from the thermal material that is
on the underside of the new heat sink.
• If you are installing a new heat-sink assembly that did not come with thermal grease, see Thermal
grease for instructions for applying thermal grease; then, continue with step Step 1 "" on page 194
of this procedure.
• If you are installing a heat sink that has contaminated thermal grease, see Thermal grease for instructions
for replacing the thermal grease; then, continue with step Step 1 "" on page 194 of this procedure.
To install a new or replacement microprocessor, complete the following steps. The following illustration
shows how to install a microprocessor on the system board.
Step 1. Touch the static-protective package that contains the microprocessor to any unpainted metal
surface on the server. Then, remove the microprocessor from the package.
Step 2. Rotate the microprocessor release lever on the socket from its closed and locked position until it
stops in the fully open position.
Attention:
• Do not touch the microprocessor contact; handle the microprocessor by the edges only.
Contaminants on the microprocessor contacts, such as oil from your skin, can cause connection
failures between the contacts and the socket.
• Handle the microprocessor carefully. Dropping the microprocessor during installation or removal
can damage the contacts.
• Do not use excessive force when you press the microprocessor into the socket.
• Make sure that the microprocessor is oriented and aligned and positioned in the socket before
you try to close the lever.
Step 3. Align the microprocessor with the socket (note the alignment mark and the position of the notches);
then, carefully place the microprocessor on the socket. Close the microprocessor bracket frame.
Note: The microprocessor fits only one way on the socket.
1
Microprocessor
2
Alignment marks
3
Notches
Step 4. Carefully close the microprocessor release lever to secure the microprocessor in the socket.
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ThinkServer RD220 Hardware Maintenance Manual