For access, remove these FRUs in order:

1. Battery.
2. Palm rest or palm rest with fingerprint reader
3. Keyboard.
4. Keyboard bezel.
5. Speakers assembly.

Cable routing: After attaching the fan and the brackets, route the cables as shown in the figure.

Attention: Do not handle the fan roughly. Improper handling of the fan can cause distortion or deformation and imperfect contact with components.

In step (5), release the wireless antenna cables from the cable guide of the fan assembly.

When installing:

• Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked (a) as in the following figure. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. In some modes, you need to peel the thin film off from the rubber (b).

For T400 integrated graphics models:

For T400 switchable graphics models:

For R400 integrated graphics models:

For R400 switchable graphics models:

• Make sure that the fan connector is attached firmly.
• When attaching the fan assembly to the frame, take care not to damage the heat sink (b) of the fan assembly.