Canon Community

My MX 922 leaves a thin vertical line on copies when the original is fed through the upper feed.  No line on documents sent from PC or documents copied from the scanner glass. I've performed all the listed cleaning steps. TIA

MX 922 prints a verical line on copies made through the upper sheet feed. No lines on copies made using scanner glass or on copies sent via PC. I've completed all the various cleaning steps but the vertical line is still there on top feed copies.I'm ...