| 摘要 |
PROBLEM TO BE SOLVED: To provide a pinball game machine having a ball discharge device by which a detecting sensitivity is properly adjusted in the case of delivery and an illegal or faulty part does not occur after the delivery. SOLUTION: A variable resistor 54 for adjusting the detecting sensitivity of a touch sensor circuit is sealed by a sealing cover body 70 which is not operated unless it is broken and delivered in the sealed state so that the machine is constituted in such a way that the resistor 54 is not operated in a game arcade. Then the detecting sensitivity can be properly adjusted in the case of delivery. After the delivery, an obvious effect that the adjustment of the detecting sensitivity which permits the illegal or faulty part to occur cannot be executed is obtained.
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