Question about HP Officejet Pro L7780 All-In-One InkJet Printer
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.
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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Posted on Jan 02, 2017
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