Lenovo IdeaPad U460s - Manual (Page 60)

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IdeaPad U460 Hardware Maintenance Manual
Figure 12. Removal steps of fan assembly and heat sink assembly (continued)
Lift the fan assembly and heat sink assembly in the direction shown by arrow
4 .
Be careful not to damage the connector.
4
Attention: Do not handle the heat sink assembly roughly. Improper handling
can cause distortion or deformation and imperfect contact with components.
Remove one screw 5 to detach the fan assembly and the heat sink assembly.
d
b a
5
c
Step Screw (quantity) Color Torque
5
M1.98 × 3 mm, flat-head, nylok-coated (1) Silver 1.5 kgfcm
When installing:
Before you attach the fan assembly to the computer, apply thermal grease, •
at an amount of 0.2 grams, to the
a b
part shown in the figure above. Either
too much or too less grease application can cause a thermal problem due
to imperfect contact with a component. You also need to peel the thin film
off from the rubber
c
. In models with the discrete graphics chip, there is an
additional thermal rubber whose film to be peeled off.