Coin mech won't reset?

[loman4ec]

I am finishing my v56b and it works great the first vend but after it vends the first time the coin mech still buzzes and wont accept coins or allow another vend. when you unplug the coin mech the buzz stops and when you plug it back in it is ok for the first vend again. what do you think is wrong?

[johnieG]

A bad or open carrier switch on the bottom of the vending gate assy. or an open wire going to pin 7 of the jones connector,

or maybe a misadjusted carrier switch pin

[johnieG]

this will help you with checking the adjustment...