IBM 7979B1U User Manual page 82

10. Install a heat sink on the microprocessor.
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System x3650 Type 7979: User's Guide
Attention:
v 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.
v Handle the microprocessor carefully. Dropping the microprocessor during
installation or removal can damage the contacts.
v Do not use excessive force when you press the microprocessor into the
socket.
v Make sure that the microprocessor is oriented and aligned and
positioned in the socket before you try to close the lever.
Microprocessor
d. 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.
e. Carefully close the microprocessor release lever to secure the
microprocessor in the socket.
Attention: Do not touch the thermal grease on the bottom of the heat sink or
set down the heat sink after you remove the plastic cover. Touching the
thermal grease will contaminate it.
Thermal grease
a. Make sure that the heat-sink release lever is in the open position.
b. Remove the plastic protective cover from the bottom of the heat sink.
c. Align the heat sink above the microprocessor with the thermal-grease side
down.
Alignment marks
Notches
Heat sink