Question about HP Officejet Pro L7780 All-In-One InkJet Printer
Yellow cartridge ran out, replaced it with new and since then black is not printing if it does its very faint and missing lines of print. help!!
no help in documentation!
You need to remove the black/yellow printhead and dab it on a damp paper towel until you see a solid line of black ink on the towel when you press it. It won't pass the alignment until all colors work properly.
Posted on Nov 19, 2009
Testimonial: "Tried that, unfortunatley not solved my problem argh!!"
WASH THE PRINT HEAD IN WARM WATER. I REPLACED MY YELLOW LAST WEEK, THEN BLACK STOPPED WORKING. I WASHED THE HEAD IN WARM WATER (JUST THE NOZZLES) AND NOW IT WORKS GREAT. MACHINE IS A LEMON....
Posted on Dec 15, 2009
I have to ask this if only to rule this out.
Are you using a factory new ink cartridge?
Please consider the following:
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
If you are using factory new cartridges, then please call the manufacturers Technical Support for assistance with the warranty on the cartridges
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
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