I understand the printer is not printing in black. I appreciate your efforts in trying to resolve this issue by performing the necessary troubleshooting steps.
As you have cleaned the printhead, used 2 different black ink cartridges, and yet the issue persists, I'm afraid the issue is with the printer. Please reach out to the HP Technical Support team in your region regarding the service options for your printer.
You may create a case on the website to obtain a case number if required. Kindly watch this video to know how.
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