Installing The Cpu; Figure - Sun Microsystems Ultra 27 Service Manual

Replacing the Heat Sink and CPU
When the CPU is positioned in the socket, lower the hinged socket retainer.
19
Lower the socket retainer lever, pressing it downward, and secure it under the lever retaining
20
clip.
Do this step only if you are installing a new CPU. If you are installing a used CPU, go to
21
a. Gently wipe the top of surface of the CPU, using the supplied alcohol wipe, and allow to dry.
b. Remove the plastic cover that protects the thermal compound on the bottom of the heat
c. Go to
Do this step if you are installing an already-used CPU onto a new motherboard. Otherwise, go to
22
Step
a. Use an alcohol-soaked wipe to remove the thermal compound from the top of the CPU and
b. Use the supplied syringe to apply approximately 0.5 ml of thermal compound in a star
c. Using the clean edge of a plastic bag, spread the thermal compound until it covers the top of
82 Sun Ultra 27 Workstation Service Manual • June 2009, Revision A

Installing the CPU

FIGURE 3–33
The heat sink assembly has thermal compound pre- applied. Do not apply additional
thermal compound to the top of the CPU. The thermal compound on the heat sink is
protected by plastic cover.
sink assembly.
Step 23.
23.
the bottom of the heat sink.
pattern to the center of the top of the CPU.
Use the entire contents of the syringe.
the CPU in a thin, uniform layer.
Step 22.