Lenovo ThinkCentre 7515 Maintenance Manual page 105

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. The four screws cannot be removed from the heat
sink and fan assembly.
Figure 15. Removing 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.
Chapter 8. Replacing FRUs - Tamdhu computers
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