HP OfficeJet Pro 6978 Printing Blank Pages

[nugelib]

HP OfficeJet Pro 6978 prints blank pages. The only time it will print anything is during the "print quality" report and it is just 2 yellow rectangles, rest is blank. All brand new ink cartridges (HP genuine from HP InstaInk). Did hard reset, unplugged power cord from back of printer and wall outlet. Took out cartridges and reinserted. Cleaned print heads over a dozen times. Printed "print quality" report, performed alignment function multiple times. Tried copying from flatbed and docufeed and zip, nothing, nada. Printer is about 13-14 months old. Working off of Mac OS Mojave 10.14.5. At wit's end! Please help!

[Kumar0307]

@nugelib, Welcome to the HP Support Community!

Since you have already tried most of the troubleshooting steps to resolve this issue, let us perform these steps:

Update the printer firmware

Click here to download and install the latest firmware from your MAC.

Click here to know different methods of updating printer firmware.

Also, perform step 9 from this document. Try printing. If the issue persists, please contact our HP Support team for Service Options as it could be a possible hardware issue:

1) Click on this link - www.hp.com/contacthp/

2) Select your product type below.

3) Enter the serial of your device.

4) Select the country from the drop-down.

5) Select the appropriate option based on your preference.

6) Fill the web-form and proceed further.

Keep me posted for any other assistance.

If you feel my post solved your issue, please click “Accept as Solution”, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!