| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fraudulent action of changing a winning probability. SOLUTION: The game machine is provided with a power switch, a key cylinder 36 and a setting change button 37 on the front surface side of a power source box 31. The key cylinder 36 is provided with a main body part 36a and a turning part 36b and a key hole 36c is formed at the turning part 36b. A setting change key 40 is provided with a knob 41 and an insertion part 42. On a surface to be turned downwards when the turning part 36b of the knob 41 is turned to an ON position, a 7-segment LED 43 is provided. The insertion part 42 is provided with a key contact 44, and a cylinder contact is provided inside the turning part 36b. When the insertion part 42 is inserted to the key hole 36c, the turning part 36b is turned to the ON position and the power supply switch 35 is turned ON, a setting value signal is inputted to the 7-segment LED 43 through the cylinder contact, the key contact 44 and a connection wire. The 7-segment LED 43 displays a setting value corresponding to the setting value signal in response to it. COPYRIGHT: (C)2006,JPO&NCIPI
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