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

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Printhead ink cartidge replacement

Followed prompts on screen to change printhead ink cartidge (k) black & yellow. It will not recognise that I have change the cartidge and is still asking me to change it. Tried switching off and starting again, but the same happens every time. Can you help please.

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Re: Printhead ink cartidge replacement

Ok, you may have blocked printheads. Remove cartridges, using a cleaning solution and cotton buds (q-tips) thoroughly clean all residue. Now replace cartridges and try again.

Posted on Aug 16, 2007

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It sounds a lot like the printhead has reached a clogging point where sediment has built up in the black portion and loosens enough to printer a few lines before it re-asserts itself again.

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Hope this gives some clues and hopefully some ideas of a fix.


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