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black ink not working

Office Jet Pro 6978
macOS 10.15 Catalina

Replaced black ink and now doesn't work. Tried three new black inks, colours are fine and I did all the troubleshooting, cleaning printhead, aligning print head etc. Not sure why it suddenly stopped. Any ideas ? I haven't found an answer in the forum.

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HP Support Agent
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black ink not working

Hi @Dashbull2

Welcome to the HP Support Community. I'd be happy to assist you.

 

I understand you are not able to print in black. I appreciate your efforts in trying to resolve this issue by performing the necessary troubleshooting steps.

 

If you have tried the steps mentioned in this document and the issue persists, I'm afraid this is a hardware issue with the printer as you have already used 3 new black ink cartridges.

 

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

 

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! 

KUMAR0307
I am an HP Employee

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