Inspiron 5490 Service Manual

Installing the power button with fingerprint reader (optional)

Prerequisites

NOTE This procedure is only applicable to computers shipped with a power button with fingerprint reader.

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the power button with fingerprint reader and provides a visual representation of the installation procedure.

Image: Installing the power button with fingerprint reader

Steps

Align and place the power button with fingerprint reader into the slot on the palm-rest and keyboard assembly.
Replace the two screws (M2x3) that secure the power button with fingerprint reader to the palm-rest and keyboard assembly.
Replace the two screws (M2x2) that secure the power button with fingerprint-reader bracket to the palm-rest and keyboard assembly.
Connect the fingerprint-reader cable to the connector on the power-button board.
Connect the power-button cable to the connector on the system board.
Close the right-display hinge and replace the two screws (M2.5x5) to secure the right display hinge to the palm-rest and keyboard assembly.

Next steps

Install the I/O board.
Install the fan.
Install the battery.
Install the base cover.
Follow the procedure in After working inside your computer.

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