Question about Canon PIXMA MP780 All-In-One InkJet Printer
All colors except for black (3e) will print.
Try a "hard restart", which simply means unplugging the power cord and replugging it after a few seconds have passed. If that does not work, then rerun the CD you used when you originally installed the printer. Both techniques reprogram the printer to certain extent. Hope one of these methods works for you.
Posted on Jun 29, 2008
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Posted on Jan 02, 2017
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