Lenovo ThinkPad T420 Hardware Maintenance Manual page 105

For Integreted Graphics models:
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 as in the following igures. Either too much or too less application of grease can
a
cause a thermal problem due to imperfect contact with a component. For the fan in the integrated
graphics models, you need to peel the thin ilm off from the thermal rubber marked
For Discrete Graphics models:
For Integrated Graphics models:
a b
Chapter 8
.
b
.
Removing and replacing a FRU
99