Originally Posted by
teckat
for some reason, i have had issues on the /4080/5180 series / some drum units seem to overtone on surface & when they do only fix is to insert a new drum. the symptom shows up when u start auto gradation/ u see background in white area of effected color/ u pull out drum and surface is covered with toner/ when i called Canon, they recommended the keep power off >>insert drum & or toner if needed >> power up >> do your gradation adj's. ever since doing this procedure for over 3yrs., have no overtone issues. They originally thought it was Drum lot #'s/ but it wasn't.
Bookmarks