IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual page 70

11. Install the heat sink on the microprocessor:
12. Install the air baffle.
13. If you have other options to install or remove, do so now.
14. Replace the support bracket (see "Removing and installing the support
15. Replace the side cover (see "Replacing the side cover" on page 62).
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IBM IntelliStation Z Pro Type 6221: Hardware Maintenance Manual
Attention:
1) Do not use excessive force when pressing the microprocessor into the
socket.
2) Make sure that the microprocessor is oriented and aligned correctly
with pin number 1 in the socket before you try to close the
microprocessor-release lever. The following illustration shows the
alignment marks for both microprocessors and sockets.
Alignment marks
Microprocessor 2
Alignment marks
Microprocessor
socket 2
c. Center the microprocessor over the microprocessor socket. Align the
triangle on the corner of the microprocessor with the triangle on the corner
of the socket and carefully press the microprocessor into the socket.
d. Carefully close the microprocessor-release lever to secure the
microprocessor in the socket.
Attention: Do not set the heat sink down after you remove the plastic cover
and do not touch the thermal grease on the bottom of the heat sink. Touching
the thermal grease will contaminate it. If the thermal grease on the
microprocessor or heat sink becomes contaminated, contact your service
technician.
Thermal grease
Heat sink
a. Remove the plastic cover from the bottom of the heat sink.
b. Align and place the heat sink on top of the microprocessor, grease side
down, in the retention bracket. Press firmly on the heat sink.
Attention: Alternate the tightening of the two captive screws to prevent
damage to the microprocessor. Ensure that the screws are completely
tightened (until they stop); otherwise, damage to the microprocessor will
occur.
c. Secure the heat sink to the microprocessor by tightening the captive
screws. Alternate between the two captive screws in the heat sink while
tightening them.
bracket" on page 42).
Microprocessor 1
Microprocessor
socket 1