Backbone One Phone Connector Replacement

Use a Phillips screwdriver to remove the four 5.9 mm-long screws.

Lift up the upper cover of the controller.

Swing the upper cover over and place it on the controller case.

Use a Phillips screwdriver to remove the two 4.8 mm-long screws securing the phone connector.

Use your fingers to thread the phone connecter through the opening in the plastic cover at the right side of the rear cover.

Use a pair of tweezers to disconnect the first phone connector cable from the mainboard.

Use a pair of tweezers to disconnect the second phone connector cable from the mainboard.

Remove the phone connector cable.