Printer not printing in color

[EW20]

I replaced my printer cartridges recently and my printer will not print in color. My printer will not perform printer maintenance. When I click “Clean Printhead”, it comes back with the message that the cleaning process was unsuccessful. I have verified that the ink cartridges are properly installed and vented. Not sure what to do from here. Please help. HP OfficeJet Pro 6978

[Jay_G24]

Hi @EW20

Welcome to the HP Support Community. I'd be happy to assist you with the  "print quality" issue. 

To better assist you - 

1) Does the copy come out the same way? 

2) What's the application you are trying to print from? Have you tried printing from a different application or device? 

While you respond to that,

Let's try a power reset on the printer

Reset the product

• With the printer turned on, disconnect the power cord from the rear of the printer.
• Unplug the power cord from the wall outlet.
• Wait at least 60 seconds.
• Plug the power cord back into the wall outlet.
• Reconnect the power cord to the printer.
• Turn the printer on. HP recommends plugging the printer directly into a wall outlet.

print a Print Quality Diagnostic page 

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.

Post the Print Quality Diagnostic page here so we can help you further. 

You may also refer to this document with steps to fix " Print Quality Issues" issue applicable for your printer -  Print Quality Issues

Also, try updating the printer's firmware - HP Printers - Updating or Upgrading Printer Firmware 

Hope this helps! Keep me posted. 

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