printer fails to print cyan

[ps3142]

My HP Office Jet Pro 6978 stopped printing Cyan, even though the ink cartridge was over half full. Repeated attempts to clean the print head had no effect. I then replaced the cyan cartridge. This also had no effect...no cyan printing.

[Jay_G24]

Hi @ps3142,

I'd like to help!

I understand that the printer is not printing cyan.

If you have already performed the steps from the document Black or Color Ink Not Printing, Other Print Quality Issues and the issue persists, it could be a hardware failure.

Please reach out to HP Support in your region regarding the service options for your printer.

If you are having trouble navigating through the above options, it's most likely because the device is out of warranty. If yes? please send me a private message with the region you are contacting us from. Check next to your profile name, you should see a little blue envelope, please click on it. 

Hope this helps!

And, Welcome to the HP Support Community. 

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Yes" on the bottom right to say “Thanks” for helping