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      Fan assembly removal and installation - ThinkPad R400, T400

      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.

      Step 1 - 2

      Step Screw (quantity) Color Torque
      1 M2 × 3 mm, small-head, nylon-coated (3) Silver 0.167 Nm(1.7 kgfcm)

      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.

      Step 3 - 5

      Step Screw (quantity) Color Torque
      3 M2 × 9.5 mm, flat-head, nylon-coated (4) Black 0.167 Nm(1.7 kgfcm)

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

      Step 6 - 7

      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:

      T400 integrated graphics models

      For T400 switchable graphics models:

      T400 switchable graphics models

      For R400 integrated graphics models:

      R400 integrated graphics models

      For R400 switchable graphics models:

      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.

      Image of Heat sink

      Purchase parts online

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      • Alias ID: MIGR-71505
      • Document ID: PD012567
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo