Lenovo W520 Laptop User Manual


 
Table 29. Removal steps of thermal module (continued)
6
When installing: Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2
grams, on the parts marked a as in the following gures. Either too much or too less application of grease can
cause a thermal problem due to imperfect contact with a component. For the new CPU thermal device/fan, you
need to peel the thin lm off from the rubbers marked b .
For Switchable Graphics models:
a
a
b
b
b
84 ThinkPad T520, T520i, and W520 Hardware Maintenance Manual