Lenovo V340 Hardware Maintenance Manual page 55

Lenovo V340-17IWL
a
Figure 20. Heat sink
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 too much or too little grease application can cause a thermal
problem due to imperfect contact with a component.
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