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New ink cartridge not printing

HP Recommended
HP Office Jet Pro 6978

I've installed new black ink cartridges and the printer will not print anything in black.  Colors print fine.  Printer diagnostics indicate the printer has no issues.  Please advise.

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@Jullia

 

I reviewed your post and I understand that the printer is not printing black.

 

Don’t worry, I assure you I will try my best to get this sorted.

 

  • What is the operating system you are using?
  • Are you able to make a copy in black?

 

Meanwhile, follow the steps in the below article and check if it helps.

 

  1. With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet. 
  2. Remove USB cable, if present. 
  3. Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge. 
  4. Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer. 
  5. Turn on the printer and wait till warm-up period finishes and the printer is idle.

 

If you continue facing the issue, then update the printer firmware following the steps in the below article.

 

https://support.hp.com/us-en/document/c02919168

 

Let me know how it goes and you have a great day!

 

P.S: Welcome to the HP Support Community 😊

 

If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!

 

Cheers!

Stay Home – Stay Safe

The_Fossette
I am an HP Employee

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