No image is projected on the screen when I connect my product to the document camera. What should I do?

• Check the following:
  • Make sure the correct source is selected on the projector.
  • Make sure the projector is turned on and not in sleep mode. Make sure its picture has not been turned off.
  • Make sure the cable is connected correctly.
    
  • Make sure a USB hub is not used to connect the projector to the document camera.