Latitude 5540 Owner's Manual

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Removing the fingerprint reader (Optional)

CAUTION:The information in this section is intended for authorized service technicians only.

Prerequisites

  1. Follow the procedure in Before working inside your computer.
  2. Remove the SIM card.
  3. Remove the base cover.
  4. Remove the battery.
  5. Remove the assembly-inner frame.

About this task

The following image(s) indicate the location of the fingerprint reader and provide a visual representation of the removal procedure.

Figure 1. Image: Fingerprint reader
NOTE:For computers with configuration of with fingerprint reader on power button, the power button must be transferred to replacement palm-rest assembly.
Image: Removing the coin-cell battery

Steps

  1. Lift the latch and disconnect the fingerprint-reader cable from the connector on the USH board.
  2. Move the fingerprint-reader cable away from the fingerprint reader so that the cable is not covering the fingerprint reader.
  3. Remove the screw (M2x3) that secures the fingerprint-reader bracket to the palm-rest assembly.
  4. Slide and remove the fingerprint-reader bracket from the palm-rest assembly.
  5. Lift the fingerprint reader, along with its cable, off the palm-rest assembly.

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