When your Frontier 370 show "Frontier 370 message of problem is W-2411" massage that means it say "paper remains in printer / remove paper".
You try to perform IO check.before!!!!!!!! swiching off and on(as soon as you have switched off and on the printer and you can`t perform this)Mostly D571, 72, 73 are dirty (entrance processor)because of the corrosive environment at that place(check connectors there)..try to clean sensors in sub scanning.