My HPOfficejet Pro K550 will not print checks correctly

Do a test print...
assuming you have done multiple print head cleans... if it fails to print ANY cyan, I'd guess the print head is dead... although to be honest im not an expert with this hp printer. if that is the case, it probably isnt worth repairing.
If it does print some cyan, just missing, you may be able to find info, sorry, I cant help you there, on accessing the service or maintenance mode and doing a higher level clean, if your printer supports that.
As a last option, disassembly and soaking the bottom of the print head in cleaning solution /water... overnight, without getting ANY water on any contacts, then re running print cleans.

good luck

in my exp, again, not with this printer, mind you, if a print head fails to print ANY ink for a given colour, the print head is usually faulty.

Hope this info helps

Try updating the printer driver. If that fails, then this problem may be mechanical in nature.

I am having the same problem. I have tried reinstalling, looking for paper jams, blowing it out with canned air, and removed it from a print server network box. I downloaded the Hardware detection utility which told me it was in an error state, but does not give the discription of the state, just instructions on how to reboot the printer, which I have also done many times. Is it a dead duck and time to move on?
Thanks for your help.

Try using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English).

If you need more help come back.Post / thumbs / testimonial are welcome!

go to the printer control panel, right click your printer and open preference or may be properties on your end, Click the Color tab, and change the color option to black or color. hope this helps. feel free to rate how helpful it is.

it seems that you are correct

Push the button on either side of the rear access panel or the duplex unit and remove the panel or unit.

Check inside the printer to make sure that the cam drawer is in the correct position, toward the front. If the cam drawer is not forward, pull the cam drawer into the correct position.

With all of the paper trays removed, check to ensure that the pick-up roller is up, not protruding down towards the tray, and no media is stuck to the roller.

Remove the printheads and check underneath the carriage and under the printheads themselves. Remove any jammed media.

Have you tried a different brand of paper?. When choosing the paper try and select one which the sheets can slide easily over each other. I had loads of problems with multiple feeds and paper jams with a cheap paper. I then changed to a heavier 90gsm all in one paper from staples and have had no more problems since.(and i just chuck the paper in straight from the packet with no fanning etc)

Hi plabise -

just for a future ref: here's a quick link to an hp support doc for that specific error as a first stop for fixing things. best of luck! - JW50

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c00786157&dlc=en&product=501369

mostly there is paper stuck in the paper feed roller at the bottom of the printer remove the paper tray and look at the roller and if paper is jammed remove from rollers and reset the printer. this should solve your problem . bye hope it does

Hold the far button on the right down for a minute and it will move the head over for access