| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine capable of detecting the occurrence of a ball jam in an internal area of a variable winning device unit.SOLUTION: A pachinko machine 10 includes opening and closing control means for performing a switching control for switching between an open state of enabling a game ball to enter an internal area of a variable winning device unit and a closed state of disabling a ball from entering. The pachinko machine 10 includes: ball entering detecting means for detecting a game ball entering the internal area; and discharge detecting means for detecting a game ball discharged from the internal area. The machine 10 includes residual ball monitoring means for determining whether or not a game ball exists in the internal area based on detection of the ball entering detecting means and detection of the discharge detecting means. When the residual ball monitoring means determines that a game ball exists, the opening and closing control means is not allowed to perform the switching control and enters an inactive state, and when the residual ball monitoring means determines that no game ball exists, the opening and closing control means is allowed to perform the switching control and enters an active state. Further the machine 10 includes open and closed state storage means for storing the fact that the power interruption is caused during the switching control of the opening and closing control means.</p> |
