Canon Pixma MG 7120 will not print anything in black. Not the nozzle test. I have cleaned and re-c
Canon Pixma MG 7120 will not print anything in black. Won't print the black lines for nozzle test. I have made sure all ink cartridges are full, no tape remnants. I have cleaned and deep-cleaned to no avail. It was copying fine and then stopped p...