Xerox Wc7120 was not recognizing new magenta toners. Remove drum unit and cleaned out dev clog. Reinstalled magenta and then
machine stopped calling for magenta replacement .

However, machine was not printing magenta. had to change magenta drum unit. Then it printed magenta but with yellow streaking at
rear side of machine. The yellow drum unit looked good. I did a color calibration and the magenta patch toward rear of machine not filling
in with a little white streaking in it. This coincides with the area of page where the yellow streaking occurs. Not sure what next step is. Any
helpful information you can give is appreciated very much. Frank/ActionPhotocopy