All projectors include a control panel allowing operation of the principal functions (format change, operating the shutter, igniting / switching off the Xenon bulb, focus, zoom and shift* [optical decentralisation of the picture, settings explained in § “Positioning of the projector”]). The way to “enter into” the settings, the maintenance or the different parameters of the machine, vary from one brand to another, even from one model to another. Certain projectors have internal.
