printer will not print black ink

[16dunaway]

My HP office jet pro 6978 will not print black ink. It prints color perfectly. I have done all the maintenance you can in the settings, unadded and readded it, re set to factory settings, bought a new ink cartridge 902 HP version, and done everything online HP has to offer. It is only a year and half old, barely used. How do I fix this? 

[Kumar0307]

Hi @16dunaway

Welcome to the HP Support Community. I understand the printer is not printing in black. I'd be happy to assist you.

Check the estimated ink levels

On the printer control panel, touch the Ink Level Indicator icon . Replace any low or empty cartridges.

Clean the printhead

1. From the printer control panel, open the Setup  menu.

2. Open the Printer Maintenance menu.

3. If necessary, open the Tools menu, and then touch Clean Printhead.

4. If the print quality is unacceptable, touch Clean Again to continue the next level of cleaning. If necessary, repeat these steps for the third cleaning cycle.

   NOTE: If the printhead is badly clogged, it might require another cleaning cycle. If so, wait 30 minutes before you perform all three levels of cleaning again.

Print a Print Quality Diagnostic Page

1. From the printer control panel, open the Setup  menu.

2. Open the Reports or Tools menu.

3. Touch Print Quality Report.

If the issue persists, perform step 9 from this document.

Hope this helps! Keep me posted. 

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

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Have a great day!