Thanks for reaching out to us on HP Support Forums. 🙂 I came across your post and would like to help.
I understand that you have an HP OfficeJet 7612 Wide Format e-All-in-One. I read that the printer does not print in Cyan. You have replaced the cartridge, cleaned the cartridge and the printhead and the issue persists. Fabulous analysis. Spectacular diagnosis of the issue before posting. Kudos to you for that.I appreciate the steps you have performed and have certainly done a good job.
To provide an accurate resolution, I need a few more details:
Are you using original HP cartridges?
Is there ink in the cyan cartridge?
If the answer to the above questions is a yes then the evidence points towards a printhead failure in the printer. Please see if you can replace the cyan cartridge and check. If the issue persists then it would be better to reach out to our HP phone support to explore the hardware service options for your printer.
I hope this helps. Please keep me posted for any questions. Cheers! 🙂
Thanks for responding, MKazi! You asked for detail on the cartridges I use. I installed a genuine HP-933XL Cyan cartridge to see if it would change anything. It did not. I should mention that I have not allowed anyone to access this printer via the Internet by limiting access to local IP's only. I've been unable to determine whether the unit is in or out of warranty. My wife uses it mostly for card-making and scrap-booking, so she uses a lot of color inks. I may indeed have to replace the print head. --Kirbly