I need service on my HP OfficeJetPro6978 Blanl Ink will not print

[Oreaster]

My black ink will not print.   Went through ALL the diagonstics and troubleshooting suggestions.  Still no ink.  Need service.

[Kumar0307]

@Oreaster, Welcome to the HP Support Community!

Are you able to print in color?

Let us try these steps:

Check the estimated ink levels and replace any low/empty ink cartridge.

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, and then evaluate the results.

1. Load plain white paper in the input tray.

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

3. Open the Reports or Tools menu.

4. Touch Print Quality Report. Check for black.

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

If the black still does not print, this is a hardware failure. Please reach out to the HP Technical Support team in your region regarding the service options for your printer. 

Keep me posted for any other assistance.

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Have a great day!