It doesn't appear to have a dedicated video input, but one that can be configured for component/composite. Make sure in the menu settings of the input setup, you choose INPUT 3 -> VIDEO not S-video or component (Y/Cb/Cr).

See page 30 of the manual.
http://www.projectorcentral.com/pdf/projector_manual_1629.pdf

If this doesn't work, and input 2 is open, try getting a BNC/RCA adapter and connecting to the first input on the BNC connectors at input 2 and see if that works.

Typically black and white images are caused by S-Video not being correctly connected. Not sure in this case what is doing it... But, my guess is that you have it set for component.