Lenovo IdeaPad Z400 Touch Hardware Maintenance Manual page 59

Lenovo Z/P Series
Figure 8. Removal steps of fan assembly and heat sink assembly (continued)
Z400
a
b
Z500/P500
a
b
When installing:
Before you attach the fan assembly to the computer, apply thermal grease,
at an amount of 0.2 grams, to the part shown in the figure above. Either
a b
too much or too less grease application can cause a thermal problem due to
imperfect contact with a component.
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