I'm assuming that your unit is out of warranty, or you would not be doing this.
If you remove the 7 screws holding down the main board you can remove it from the unit and get access to the switches. The back panel with the jacks attached will come with it, but you have to disconnect an internal ribbon cable between the main board and the display board.
IMPORTANT – if your unit is still under warranty, opening it will void the warranty and you may be responsible for any and all future repair costs.
