Thanks. I used a hand swiffer to gently clean any dust on the interior. Now I have the "cartridge not installed properly" for all 4 cartridges. Tried cleaning again, same issue. So sounds like a sensor issue, but I'm not sure where the sensor is. It...
Did you ever get an answer to this and fix your printer? I have the same problem with genuine cannon cartridge on a MF743Cdw. Worked perfect and then the next day said Y and M cartridges are not installed properly (and the printer was not touched sin...
Did you ever get an answer to this and fix your printer? I have the same problem with genuine cannon cartridge on a MF743Cdw. Worked perfect and then the next day said Y and M cartridges are not installed properly (and the printer was not touched sin...
