Inspiron 14 7420 2-in-1 Service Manual

Installing the I/O board

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

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

Image: Installing the IO board

Align the ports on the I/O board to the slots on the palm-rest and keyboard assembly.
Place the I/O board on the palm-rest and keyboard assembly.
Align the screw hole on the I/O board to the screw hole on the palm-rest and keyboard assembly.
Replace the two screws (M2x3) that secure the I/O board to the palm-rest and keyboard assembly.
Connect the I/O-board cable to the connector on the I/O board and close the latch.
Connect the power-button with fingerprint-reader cable to the connector on the I/O board and close the latch.
NOTE:This step is only applicable to computers shipped with the optional fingerprint reader.
Connect the coin-cell battery cable to the I/O board.
Close the left-display hinge and align the screw holes on the left-display hinge with the screw holes on the I/O board.
Replace the two screws (M2.5x4) that secure the left-display hinge to the I/O board.