Removing A Microprocessor And Heat Sink - Lenovo System x3250 M5 Installation And Service Manual

Removing a microprocessor and heat sink

Use this information to remove a microprocessor and heat sink.
The following notes describe the type of microprocessor that the server supports and other information that
you must consider when you install a microprocessor and heat sink:
• The server supports one Intel land grid array (LGA) 1150 dual-core or quad-core microprocessor. The
type, speed, and L3 cache of the microprocessor depends on the server model.
• Read the documentation that comes with the microprocessor to determine whether you have
to update the server firmware. To download the most current level of server firmware, go to
http://www.lenovo.com/support and http://www.ibm.com/support/fixcentral.
• The microprocessor uses an integrated voltage regulator on the system board.
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 remove a microprocessor and heat sink, complete the following steps.
Step 1. Remove the cover (see "Removing the cover" on page 157).
Step 2. Remove the air baffle if installed (see "Removing the air baffle" on page 159).
Step 3. Remove the heat sink:
CAUTION:
The heat sink may become very hot during normal operation. Allow time for the heat sink
to cool down before you touch it.
a. Loosen the screws and alternate among the screws until they break the seal with the
microprocessor.
b. Press firmly on the captive screws and loosen them with a screwdriver.
c. Use your fingers to gently pull the heat sink from the microprocessor.
240
Lenovo System x3250 M5Installation and Service Guide