If
you connected multiple image sources to the projector, such as a
computer and DVD player, you may want to switch from one image
source to the other.
Make sure the connected image source you want
to use is turned on.
For video image sources, insert a DVD or other
video media and press its play button, if necessary.
Press the button for the source you want on
the projector's control panel or remote control. If there is more
than one port for that source, press the button again to cycle
through the sources.