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Latitude 3520 Service Manual

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Removing the WWAN I/O board

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the microSD card.
  3. Remove the SIM card tray for 4G LTE enabled systems.
  4. Remove the base cover.
  5. Remove the battery cable.

About this task

The following image indicates the location of the WWAN I/O board and provides a visual representation of the removal procedure.

NOTE:The following steps are applicable only for 4G LTE enabled systems.

Image: Removing the screws that secure the base cover to the palm-rest and keyboard assembly

Steps

  1. Remove the two (M2x3) screws that secure the WWAN I/O board to the palmrest assembly.
  2. Open the latch and disconnect the WWAN cable from the connector on the WWAN I/O board.
  3. Lift and remove the WWAN I/O board from the palmrest assembly.

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