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
  • © 2015 Lenovo