Inserting Coin Vending Machine royalty-free images

I have a dixe narco 368 just put onto location and the coins keep falling down to the coin return slot and not vending Why is this and how

RF 2RMGN31–Gumball machine full of gum candies Vending machine concept Stock vector illustration in realistic cartoon style isolated on white

vending machine slot This machine can dispense 4 different types of cola cans which are of different value The system makes use of 4 motors, spring coils, a coin detector, lcd

vending machine money slot Each coin slot only accepts nickels and dimes When the buyer presses the buy button, each machine has its own