Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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My HP Officejet Pro L7780 All-In-One InkJet Printer was jammed with paper. I believe I got it all out and now the display reads" Printhead problem- the following printhead has a problem: magenta/cyan (M/C). Is there a way to fix this?

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There are two possibilities here Joanne, first, it could be a false error message or else second, the Cyan/Magenta print head has gone bad.Try the following:
1. Take the Cyan/Magenta printhead out. Remember, the printhead...not the cartridges.
Clean the copper contacts with a Q Tip, moistened with plain water. Wait till it dries, put the printhead back in.
2. If this does not resolve the issue, unplug the power cord from the back and press and hold the power cord for 30 sec. This will drain all the static charges. Plug it back after a couple of minutes and see if the error message re appears.

Posted on Jul 05, 2009

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Posted on Jan 02, 2017

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