Power at a selected frequency in the high frequency region of the spectrum is supplied by a power converter having a wide range of input voltages. In one embodiment, all awards for predetermined symbols and combinations thereof, including winning combinations produced by a wild symbol are provided to the player. The door panel translates laterally relative to the opening between a closed position and an open position. The printing system then determines a density error errT in the case of formation of dot and in the case of non-formation of dot, and distributes the density error errT into the peripheral pixels with predetermined weights.