The EMI filter is connected by three screws. Use the T10 screwdriver to remove them.
The screw that holds in both the filter and a wire that is connected to it is a different size and should be kept identifiable from the other two screws.
The green and yellow wire that was held in by the different screw is tucked behind another component. To get it out, squeeze it behind the black wire and the filter will be able to be removed from the casing.