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4. Install a heat sink on the microprocessor.
Attention:
Do not touch the thermal grease on the bottom of the heat sink or
set down the heat sink after you remove the plastic cover. Touching the thermal
grease will contaminate it.
a. Remove the plastic protective cover from the bottom of the heat sink.
b. If the new heat sink did not come with thermal grease, apply thermal grease
on the microprocessor before you install the heat sink (see "Thermal grease"
on page 228).
c. Align the heat sink so that the arrows on the label point toward the system
fans and place the heat sink on top of the microprocessor, thermal material
side down.
Heat Sink Orientation
FANs
d. Align the screw holes on the heat sink with the holes on the system board;
then, place the heat sink on the microprocessor with the thermal-grease side
down.
e. Tighten the screws 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.
5. Install the air baffle (see "Installing the air baffle" on page 150).
6. If you have the optional hot-swap rear hard disk drive cage installed, rotate it
down (see "Rotating the optional hot-swap rear hard disk drive cage down" on
page 148).
7. Install the cover (see "Installing the cover" on page 146).
8. Reconnect the external cables; then, reconnect the power cords and turn on the
peripheral devices and the server.
Chapter 5. Removing and replacing server components
227
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