Buddy its simple, Just remove the power cord and printer cord. Keep it like that for 5 minutes. then restart your printer thats your factory reset. It its not working then your paper sensor is u/s you need to replace it.
Kindly vote if it solves ur problem.
Something stuck below the upper grey rollers at the right hand side 12 13 mm from the right side....
(More)
Something stuck below the upper grey rollers at the right hand side 12 13 mm from the right side. How do I get to open up the printer, have tried to shove it out with plastic film etc without any succes, it´s stuck to hard.