Canon Community

i have a mf8500c that the black prints very poorly. i would like to remove the toner tray so i can clean the glass on the laser. i have looked at the repair manual but still can't figure out how to get it out. i think this printing problem is caused ...

i have a canon mf8280cw that has very few pages on it. less then 400 total. i have had it a few years i think. the problem i am having is the print is not solid or dark. some times you can not even see black and white print. the problem is on both bl...