Service manual

Nacho Family Service Manual 58
Light Tunnel
The light tunnel is comprised of four pieces of mirrored glass that are glued together to form a box with two open
ends. The light tunnel focuses the light between the color wheel and the DMD.
An issue with the light tunnel is indicated when image banding appears on the right and/or left sides of the image.
Usually, this means that the glue that adheres the sides of the light tunnel has deteriorated and the sides have
slipped out of alignment.
The light tunnel is held in place on the optical engine with the metal tunnel clip, which, in turn, fastens to the
engine body with two M2x3 screws. The tunnel clip is also a replaceable part.
Light tunnel Tunnel clip
Light tunnel location