HPOfficeJet Pro 6978 Printing Blank Pages

[MsAMM]

I have to work from home now because my office is closed and my HPOfficeJet Pro 6978 is print blank pages and the ink supply is not empty.

Please assist.

Thank you

[KrazyToad]

@MsAMM

Welcome to HP Community

I have gone through your Post and would like to help
 

Are you able to make photoocopies?

Print a Quality Diagnostic Page and let me know if that prints

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.

   A Print Quality Diagnostic Page prints.

   

Keep me psoted

[jefflin]

I have the same problem. No black ink is printed, despite it being a new HP 902 cartridge. The quality report is attached. 

[KrazyToad]

@MsAMM

Try cleaning the printhead and check if that helps

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.

   A test page prints.

   

4. Examine the test page.

   • 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.

   • If the print quality is acceptable, touch Done.

Link: https://support.hp.com/in-en/document/c05076934