HP Office Jet Pro 6975 will not print Blue. It prints Pink.

[JCCubby]

I have all new cartridges in my OfficeJet Pro 6975. Blue no longer prints as blue, but prints out pink. When I run diagnotics it still doesn't print blue. I've tried copying directly off printer and by using my laptop, but nothing changes.  There are 11,000 pages I ran off. When I run a test page, blue is missing. Black, Red and Yellow prints fine

[Kumar0307]

@JCCubby, Welcome to the HP Support Community! I’m here to help.

I understand the printer is not printing in blue(cyan). Make sure you are using HP ink cartridges.

Do you get any errors?

Kindly perform the steps mentioned in this document - Black or Color Ink Not Printing, Other Print Quality Issues

Clean the printhead up to 2 times and print a test page to check the result.

If the issue persists even after replacing the ink cartridges, I'm afraid this is a hardware issue with the printhead and it is non-removable on this model printer. 

If the printer is out of warranty, I suggest you upgrade the printer. You may visit Hp Store to check the available printers.

If the printer is working fine with an alternate cyan ink cartridge, it could be the cartridge that is defective. In this case, please reach out to the HP Technical Support team in your region regarding the replacement options. 

You may create a case on the website to obtain a case number if required. Kindly watch this video to know how.

Keep me posted for any other assistance.

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

Click on the YES button to reply that the response was helpful and/or to say “Thank You”.

Have a great day!