Sun Microsystems Ultra 20 User Manual page 103

4. When the CPU is positioned in the socket, press down on the socket retainer lever
to lock the CPU in place.
5. Do one of the following:
If you are installing a new CPU:
■
a. Clean any contamination from the top of surface of the CPU, using the
supplied alcohol wipe.
The heatsink assembly already has thermal grease applied. You do not need to
apply additional thermal grease.
b. Remove the plastic cover from the heatsink/fan assembly.
If you are replacing an already used CPU on a new motherboard:
■
a. Remove the grease from the CPU and remove the thermal interface material
from the heatsink using the alcohol wipe supplied with the motherboard.
b. Use the syringe that is supplied with the motherboard to apply approximately
0.5 ml of thermal grease to the center of the top of the CPU.
Empty the entire syringe onto the chip.
c. Using the wrapper of the alcohol wipe or a finger inserted into a clean plastic
bag, spread out the thermal grease to a thin uniform thickness over the CPU.
Caution – Do not use an unprotected finger to spread the thermal grease, as the oils
on your finger will degrade the performance.
6. Inspect the heatsink/fan assembly for dust and lint. Clean if necessary.
Caution – If you are installing an Opteron model 180 processor, make sure to use
the heatsink supplied with the processor. Failure to use the supplied heatsink for the
Opteron 180 will cause insufficient cooling, leading to premature failure of the
processor.
Chapter 4 Maintaining the Workstation 4-51