Quoted from pinballinreno:Turn until the light just turns off.
If it's on all the time, it needs adjustment.Test it in switch test with a ball.
Adjust the outlane ones to while you are at it.
pinballinreno is right about this. TOM likes all three eddy sensors adjusted and working. Turn the potentiometer until the LED goes on then back off just until the LED goes out.
LTG : )