Provided is a fixing apparatus which enables, when a large display is used in front of a console, easy and smooth detachment of the display itself, including touch sensor groups which respectively detect a contact with or a close approach to a display unit which is supported by a casing and which includes a display surface, from the display surface F side, and detect a contact with or a close approach to the display unit from the back surface side; and a control unit which enables detachment of the display unit from a joining arm which couples the casing and the display unit, in the case where the display unit is fixed to the joining arm, and when the contact with or the close approach from the display surface side is detected and the contact with or the close approach from the back surface side is detected.