Press the 'Video' button on the projector remote. Volume is adjusted by the knob on the right. The first computer on the right when you walk in is the teacher's station. To project it's screen first turn on the projector as described above. Select 'RGB1' on the projector remote.
Volume is adjusted by the knob on the right.
Position the projector. Turn on the projector and focus by adjusting the knobs. The mirror top tilts to move the image up or down. If the lamp bulb burns out there is a slider on the front of the projector that will switch to the secondary working bulb.