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      Bluetooth daughter card (BDC-2.1) removal and installation - ThinkPad T520, T520i, W520

      Bluetooth daughter card (BDC-2.1) removal

      For access, remove these FRUs in order:

      Please perform the following steps as shown in the pictures below.


      StepScrew (quantity)ColorTorque
      1 M2 × 3 mm, wafer-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgfcm)


      Bluetooth daughter card (BDC-2.1) installation

      When installing: Make sure that the connector is attached firmly.



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      • Alias ID: MIGR-76899
      • Document ID: PD010930
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo