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5. Remove the four screws 1 that secure the heat sink and fan assembly to the
system board.
Note:
Carefully remove the four screws from the system board to avoid any
possible damage to the system board. The four screws cannot be
removed from the heat sink and fan assembly.
6. Lift the failing heat sink and fan assembly off the system board.
Notes:
a. You might have to gently twist the heat sink and fan assembly to free it
from the microprocessor.
b. Do not touch the thermal grease while handling the heat sink and fan
assembly.
7. Position the new heat sink and fan assembly on the system board so that the
four screws are aligned with the holes on the system board.
Note: Position the new heat sink and fan assembly so that the heat sink and
fan assembly cable is toward the microprocessor fan connector on the
system board.
8. Alternate tightening each screw a small and equal amount until the heat sink
and fan assembly is secured to the system board. Do not over-tighten the
screws.
9. Connect the heat sink and fan assembly cable to the microprocessor fan
connector on the system board.
10. Go to “Completing the parts replacement” on page 45.
Figure 20. Removing the heat sink and fan assembly
Chapter 2. Installing options and replacing hardware 29