How do you set prices in a vending machine FAS easy 5000?

Open the door, put the plastic key in the power switch to power the machine up, press the "P" button on the main board (a small black switch) for 2 seconds.

Then on the keypad press 03# to go in to price setting mode, type the number of the drum followed by #, and finally the price followed by #

See the manual here: http://109.170.209.5:591/Part%20Manuals/FAS/FAS.pdf