Question about HP Officejet Pro L7780 All-In-One InkJet Printer
Use the setup button and scroll down to print reports, print the self test report and it should show all colors. If any color is not printing you probably need a new printhead for that color. Otherwise do a printhead cleaning until all colors print, and then alignment won't fail.
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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