What is the recommended procedure for clearing a stubborn paper jam causing an 'e2 error' in an HP 515?

For a stubborn paper jam on an HP 515, ensure the printer is off and unplugged. Instead of pulling forcefully, try to pull the paper out slowly and evenly in the direction of the paper path. If it's stuck on a roller, try to gently rotate the roller in the direction that loosens the paper. Refer to your HP 515 manual for specific instructions on accessing internal mechanisms if necessary.