A pinball slot machine includes a board on which a main control circuit for determining an internal lottery of a game with a random number at a predetermined timing is placed, a liquid crystal display for displaying an effect image pertinent to the game, a liquid crystal display control board 720a, and hooks 223a and 223b and projections 724a and 724b having attachment holes for hooking the liquid crystal display control board 720a on a cabinet section 200b of the gaming machine. To attach the liquid crystal display control board 720a to the cabinet section 200b of the gaming machine, the hooks 223a and 223b are inserted into the attachment holes for temporarily tacking the liquid crystal display control board 720a. In this state, the liquid crystal display control board 720a is screwed at upper left and right ends into a door 200a.