IMC51 How to put the money correctly to prevent from stucked/jammed bills？

If the IMC51 frequently jams banknotes, please put the banknotes correctly according to the following method：

Step 1 : Turn on the machine

Step 2 : Organize the bills into a flat and aligned state

Step 3 : Place the bills with the face perpendicular to the back baffle and flip the bills backwards