Lenovo 6136A1U User Manual page 28

3. Remove the four screws that secure the heat sink to the system board.
Figure 16. Removing the heat sink
4. Lift the failing heat sink off the system board.
5. Position the new heat sink on the system board so that the four screws are
6. Alternate tightening each screw a small and equal amount until the heat sink
7. Go to "Completing the parts replacement" on page 30.
20
User Guide
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.
Notes:
a. You might have to gently twist the heat sink to free it from the
microprocessor.
b. Do not touch the thermal grease while handling the heat sink.
aligned with the holes on the system board.
and fan assembly is secured to the system board. Do not over-tighten the
screws.