Lenovo IdeaPad U460 Hardware Maintenance Manual page 60

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
Be careful not to damage the connector.
Attention: Do not handle the heat sink assembly roughly. Improper handling
can cause distortion or deformation and imperfect contact with components.
Remove one screw
When installing:
•
56
5
Step Screw (quantity)
M1.98 × 3 mm, flat-head, nylok-coated (1)
5
Before you attach the fan assembly to the computer, apply thermal grease,
at an amount of 0.2 grams, to the
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
additional thermal rubber
to detach the fan assembly and the heat sink assembly.
a
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part shown in the figure above. Either
a b
. In models with the discrete graphics chip, there is an
c
whose film to be peeled off.
4
d
b
c
Color Torque
Silver 1.5 kgfcm
.
4