Question about HP Officejet Pro L7780 All-In-One InkJet Printer
If the machine functions well otherwise ( no errors ) then you should try to run the cleaning function from the printer software. Locate the printer in the printer folder and right-click the icon and select properties. Then select preferences at the bottom of the window, and select the maintainence tab. Select clean, and follow the directions. If you see no improvement after 3-5 cleans, it is more than likely the printhead. Contact HP directly to see about warranty replacement of the printhead. There is a warranty date on the side of the printhead itself. The printhead may also just be prematurely defective, so if out of warranty, try to replace it.
Posted on Sep 29, 2010
Mine would not print red - -it had a bad printhead.
Posted on Jan 22, 2011
1. Unplug the power cable of your wireless router(im just assuming you have one, cos that's what causes this issue).
2. Unplug power cable of the printer and plug it back in. Now the printer should start up and it should not freeze.
3. Turn off the wireless radio of the printer by pressing Setup Menu
Posted on Sep 30, 2010
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Posted on Jan 02, 2017
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