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Vostro 3401 Service Manual

Removing the IO board

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the SD card.
  3. Remove the base cover.
  4. Disconnect the battery cable.

About this task

Removing the IO board

Steps

  1. [For models shipped with a fingerprint reader] : Disconnect the fingerprint reader to IO daughter board FFC and IO daughter board to system board FFC from the IO daughter board.
  2. [For models shipped without a fingerprint reader] : Disconnect the power button FFC, IO daughter board FFC, and display cable from the system board.
  3. Peel back the power button FFC and IO daughter board FFC from the palm rest.
  4. Remove the four (M2x4) screws that secure the IO board to the palmrest, and remove the IO board from the system.
  5. Disconnect and remove the power button FFC and IO daughter board FFC from the IO daughter board.

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