On my HP OfficeJet Premier Pro 9019 (only one and half years old,) I received a paper jam message "The original is jammed in the document feeder. Open the cover, remove and reload the original, and then try again."
I have followed all steps in troubleshooting: checking for jams in all feed areas, cleaning all the rollers with a damp lint free cloth, removing all ink cartridges and reinstalling them, removing paper tray, shaking the printer (and cursing it) in case debris got on a feeding sensor, while it was powered on - pulling the power cord from the back and waiting 10 minutes and later for 30 minutes, using the troubleshooter on HP smart, going through the automated help features, attempted to do a hard reset and checked for driver/software updates.
I have gone through your Post and I appreciate all your efforts and expertise in troubleshooting this issue
At this point I suggest you contact HP Support in your region for service options
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 chat or get phone number options based on your preferences.
6) Fill the web-form and proceed further.
If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
KrazyToad I Am An HP Employee
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