"cartridge error, printer says to see printer documentation for details" I don't have a manual. I installed new cartridge, but message remains on printer with flashing amber light

Try this fix:

U051 indicates an ink cartridge that cannot be recognised by the printer. Sadly you cannot use your printer while this error remains.

I would advise the following:
-Remove the problem cartridge from the printer
-Wipe the gold contacts on the front of the cartridge with a piece of non fibrous tissue (like kitchen tissue).
-Re-install the cartridge.

If the error remains it is likely that there is a genuine problem with the cartridge. So I would advise re-installing whichever cartridge you had in the printer before the error began to show or purchasing a new ink cartridge.

Clean the contacts on BOTH the cartridge and the printer... the little gold dots... try it again.

Note that HP imbeds a serial number in each cartridge and in an effort to thwart refilling, you need to present a different cartridge to the printer and power on when you change. That is, temporarily put a a different one and turn on power to fool it into thinking it is a different one before going back to the one you intend to use...

Place the old cartridge back and see the result. If the printer prompt cartridge error or low innk, then the issue is with your new cartridges. replace or claim warranty

Try this

Turn the printer off hold down the menu button turn the printer back on while continuing to hold down the the menu, when you get a green light your ready to print

here is a link to resolve the problem:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=buu02180&lc=en&dlc=en&cc=us&lang=en&rule=21439&product=60259

here is a link to the users manual:

http://h10032.www1.hp.com/ctg/Manual/bpu05029.pdf

This page may help.  One of the things it's supposed to help with is 'cartridge error'.
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c00094661&dlc=en&product=374581

If that doesn't help, can you provide more detail about the cartridge error message?

This may sound simple, but it is often overlooked. Have you taken the tape off the cartridge print heads?

plz try with another cartridge