So i've had this canon mf644cdw for a few months now and it was working fine. After printing up a bunch "50-100" flyers i lost RED. Now red prints as yellow. I replaced the red cartridge thinking that was the problem but red still prints yellow. I have checked printing all other colors and they all work fine INDIVIDUALLY but mostly prints yellow on normal print job with several colors. Am waiting on a yellow cartridge to replace and try that but i'm not sure this is a cartridge issue.
I've tried: reset all settings to default, then...
1: "removing and reinstall the red toner cartridge"
2: "clean fixing assembly"
3: "clean ITB"
4: "clean feeder"
5: "auto adjust gradiation"
6: "correct print color mismatch"
7) "print from different pc to make sure that is not the issue"
SAMPLES...
Correct Image:
bad printed image:
