ok, turn the gun on, and go to the 'eye' section of the menu. take the pull pin out of the bolt/backblock, and look down at the led, it should be reading sumwhere below a hundred, depending on your settings n such. now pull the bolt out of the back block a lil and the menu should jump up to 230 or so. the eye's are workin if it does that. if not, u need to clean, or replace the eyes.