Lenovo System x3250 M4, Installation And Service Manual

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• The microprocessor speeds are automatically set for this server; therefore, you do not have to set any
microprocessor frequency-selection jumpers or switches.
• If the thermal-grease protective cover (for example, a plastic cap or tape liner) is removed from the heat
sink, do not touch the thermal grease on the bottom of the heat sink or set down the heat sink. For more
information about applying or working with thermal grease, see “Thermal grease” on page 197.
Note: Removing the heat sink from the microprocessor destroys the even distribution of the thermal
grease and requires replacing the thermal grease.
Attention:
• Microprocessors are to be installed only by trained technicians.
Important: Always use the microprocessor installation tool to install a microprocessor. Failing to use
the microprocessor installation tool may damage the microprocessor sockets on the system board. Any
damage to the microprocessor sockets may require replacing the system board.
• Do not allow the thermal grease on the microprocessor and heat sink to come in contact with anything.
Contact with any surface can compromise the thermal grease and the microprocessor socket.
• Dropping the microprocessor during installation or removal can damage the contacts.
• Do not touch the microprocessor contacts; 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.
• The pins on the sockets are fragile. Any damage to the pins might require replacing the system board.
Read the safety information in “Safety” on page v and “Installation guidelines” on page 33.
If you are replacing a server component in the server, you need to turn off the server and peripheral devices,
and disconnect the power cords and all external cables.
To install a microprocessor and heat sink, complete the following steps.
Step 1. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention:
• When you handle static-sensitive devices, take precautions to avoid damage from static
electricity. For details about handling these devices, see “Handling static-sensitive devices” on
page 35.
• The microprocessor contacts are fragile; handle the microprocessor very carefully. Do not touch
the microprocessor contacts with your skin.
• The microprocessor fits only one way on the socket.
Step 2. 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,
and close the microprocessor release latch.
Chapter 6
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Removing and replacing components
195