IBM BladeCenter HS22V 7871 Problem Determination And Service Manual page 107

7. 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.
8. If you are reinstalling a heat sink that were removed from the blade server,
complete the following steps:
Attention:
a. Thermal grease must be removed using an alcohol wipe from the
microprocessor and heat sink if either component has been replaced. New
thermal grease muse then be applied to the heat sink before it is installed
(see "Thermal grease" on page 92).
b. 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.
a. Make sure that the microprocessor and the heat sink were the same pair
that were removed from the blade server. If they are not, the old thermal
grease must be removed using an alcohol wipe and new thermal grease
must be applied to the heat sink (see "Thermal grease" on page 92).
b. Make sure that the thermal material is still on the bottom of the heat sink
and on the top of the microprocessor.
c. 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.
d. Align the three screws on the heat sink with the holes on the heat-sink
retention module.
e. 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 foot-pounds to 9.6 foot-pounds).
9. If you are installing a new heat sink, complete the following steps:
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.
a. Remove the plastic protective cover from the bottom of the heat sink.
b. Apply thermal grease to the heat sink (see "Thermal grease" on page 92).
c. 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.
d. Align the three screws on the heat sink with the holes on the heat-sink
retention module.
e. 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 foot-pounds to 9.6 foot-pounds).
10. Reinstall the memory module closest to the microprocessor you installed.
Chapter 5. Removing and replacing blade server components
91