Hello, I have a 5000 that when the customer uses the rdf the rear of the copies have light streaks thru the page. Of the glass, copies r fine, just when rdf is used. From the samples I have seen it seems like its just the back side but can't confirm yet. Any suggestions would be super.
Maybe check the doc feed height. If the rear hinge is bent/loose/too high it can let a little light. Bend down so the glass is eye level and close the ADF, it should have an even gap looking from the front or side.