IBM HS12 - BladeCenter - 8028 Service Manual page 76

Problem determination and service guide
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2. Install a heat sink on the microprocessor.
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BladeCenter HS12 Type 8014, 8028 or 1916: Problem Determination and Service Guide
Microprocessor
Microprocessor retainer
e. 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 place the microprocessor into the socket.
Attention:
v Do not press the microprocessor into the socket.
v Make sure that the microprocessor is oriented and aligned correctly in the
socket before you try to close the microprocessor retainer.
f. Carefully close the microprocessor retainer.
g. Rotate the locking lever on the microprocessor socket to the closed and
locked position. Make sure that the lever is secured in the locked position
by pressing the tab on the microprocessor socket.
Attention:
v Do not set down the heat sink after you remove the plastic cover.
v Do not touch the thermal material on the bottom of the heat sink. Touching
the thermal material will contaminate it. If the thermal material on the
microprocessor or heat sink becomes contaminated, contact your service
technician.
Heat sink
Thermal material
a. Remove the plastic protective cover from the bottom of the heat sink.
b. Make sure that the thermal material is still on the bottom of the heat sink;
then, align and place the heat sink on top of the microprocessor in the
retention bracket, thermal material side down. Press firmly on the heat sink.
c. Align the two screws on the heat sink with the holes on the heat-sink
retention module.
d. Press firmly on the captive screws and tighten them with a screwdriver,
alternating among the screws until they are tight. If possible, each screw
should be rotated two full rotations at a time. Repeat until the screws are
tight. Do not overtighten the screws by using excessive force. If you are
using a torque wrench, tighten the screws to 8.5 Newton-meters (Nm) to 13
Nm (6.3 inch-pounds to 9.6 inch-pounds).
Alignment marks
Microprocessor
socket

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