When you change the print heads for a Hp L7580 what problems does it resolve?

On this HP the print head is not part of the cartridge. How do you know the print head is fine? Did you just try to do a test page without an alignment?
I know that HP (they suck) will not help you because you are past warranty - Google your question since I am sure that you are not the only person to have experienced this issue.
I think you have a bad print head.

I have brand new print head and saids that there is a problem with the printer head and will not print nothing the black will not go to the print head need code to over ride and print something in black and white I've tried to shut it down and restarted for 30 sec. and for 15 min's did not work keeps coming up that there's a problem with the printer head model #C8187A-013 serial # MY76553H2 series Officejet Pro L7580 All-in-One email: [email protected]

Run print head cleaning cycles until the prints are correct.

please follow this document to resolve this issue
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01628836&tmp_task=solveCategory&lc=en&dlc=en&cc=us?=en&product=2512008

You will have to reset the printer.If you want any further support, a technician from techbuddies can help you for free.For this log on to www.techbuddies.org

i order the 8 jan 2010 2 print heads No : 88 (ref hp c9381a for black/yellow and ref hp c9382a for magenta/cyan) and i receive it after 4 days.

I had the same problem. Ended up replacing the black/yellow "printhead" and that corrected the problem.

Re-insert the print cartridges. It is also possible that the heads are burnt. Get a new set of print heads (black/yellow) and install to the printer. If problem persists, clean the contacts on the printers. Use acetone + cotton swabs.

Hi, 


Change the paper type and paper size and that should resolve the issue.
Regrads,  raj_p5983

This is an old thread - but I encountered the same problem with my 7580 today - and found this thread. I had replaced an empty black ink cartridge with a new XL black one. I made a about 4 or 5 mostly black and white prints and just like that it told me both printheads had a problem. Took them out and cleaned each ink head with toilet paper and replaced them a couple of times. Then it said that only the M/C head was bad. I tried to do various diagnostics and print head cleaning from the Solution Center with nothing happening. I took out the M/C head and shook it a few times and wiped the head with a napkin. Then I took some methylated spirit and wiped the head again. Inserted, closed the cover and pressed ok for a couple of seconds. It then proceeded to do all that I tried to do from my PC - print test page, print diagnostics page, and align the heads. It went through all and printed fine. This saved my about at least US$80 for one printhead! I hope this helps others. This was posted on 10Jan2011 and applies to HP 88 printheads.