Inspiron 7400 Service Manual

Installing the power-button board

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

The following images indicate the location of the power-button board and provides a visual representation of the installation procedure.

Image:Installing the power-button board

Using the alignment posts, place the power-button board into its slot on the palm-rest and keyboard assembly.
Replace the two screws (M2x3) that secure the power-button board to the palm-rest and keyboard assembly.
Connect the power-button cable to the fingerprint-reader board and close the latch.
Place the power-button bracket on the power-button board.
Align the screw holes on the power-button bracket to the screw holes on the palm-rest and keyboard assembly.
Replace the three screws (M2x3) that secure the power-button bracket to the palm-rest and keyboard assembly.

Install the I/O board.
Install the fan (4-cell battery) or the fan (6-cell battery), whichever applicable.
Install the 4-cell battery or the 6-cell battery, whichever applicable.
Install the base cover.
Follow the procedure in After working inside your computer.