Lenovo ThinkPad T450 (English) Hardware Maintenance Manual - ThinkPad T450 - Page 86
Notes, Wheninstalling, Forintegrated-graphicsmodels
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Removal steps of the thermal fan assembly Notes: • Loosen the screws 2 in ascending alphabetical order as illustrated. The screws 2 cannot be removed. • The screws 2e and 2f are available only in some computer models. 1 2c 2b 2a 2d 3 When installing: • Ensure that the connector of the thermal fan is attached firmly. • Before you attach the thermal fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the parts marked a and b as shown in the following illustration. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. For the new thermal fan assembly, you must peel the thin film off from the rubbers. For integrated-graphics models 80 Hardware Maintenance Manual