Lenovo System x3250 M5, Installation And Service Manual

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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.
• 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 31.
If you are replacing a server component in the server, you need to slide the server out from the rack
enclosure, 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 33.
• 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.
Figure 170. Microprocesssor installation
Step 3. Gently lower the heat sink on the microprocessor.
Step 4. Align the screw holes on the heat sink with the holes on the system board.
Chapter 6
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Removing and replacing server components
243