Steps to Select an Input Signal on Cannon WUX5800 Projector To switch between signals from connected devices, select an input signal in the [Input] menu.The selected signal changes each time you press the INPUT button, or each time you press the up / down buttons when the [Input] window is shown.The currently active input signal is marked with a green circle and enclosed by a orange border.Names of input signals available for projection are displayed in white, and unavailable signal names are grayed out. Read more: How to Use Lens Ring on Cannon LX-MU500Z ProjectorCannon LX-MU500Z Projector Remote Control Not Working SolutionCommon Projection Audio Input Interfaces