The problem you are facing can also happen, if the cartridges are jammed, because when the cartridges cannot move the printer thinks there is some paper is jam. Can you confirm, if the cartridges can move freely or not ?
Thanks, ***** ***** off the printer then, try to move the cartridges with your hand and let me know, if something dislodged from them or not or you are able to move them.
OK, now move them to the center and power on the printer, after that let me know what does the cartridges do ?
Do you still see the paper jam message on the printer ?
Thanks for the update, I do not know, you will like my honest answer or not, because the problem is with the paper jam sensor, it seems to be defective and that is why the printer thinks, there is paper jam and showing you the false error message on the printer, unfortunately there is no other way to solve the problem, except replacing the sensor from any repair shop.
You are welcome and I am extremely sorry that, the problem cannot be solved at home, as it is a hardware fault of the printer. Please reply me back, if you need any further information, othewsie please rememeber to give positive rating, because without that, all my time and effort will be wasted.