Sanyo PLV-Z2 Multimedia Projector "clean lens fogged" Questions

seems that there must be dust inside because you can see blotches on the projected pictures. I have cleaned the lens. Is there something that can be cleaned between the bulb and the lens? blow out all

...as well... Does anyone know what the problem is? Does it need to be serviced to have the panels cleaned...? Thank you As it appears from the images that the images are fine. The sanyo PLV-Z2 is a ...