| 摘要 |
PROBLEM TO BE SOLVED: To improve restraining force of a fraudulent practice by allowing early discovery of the fraudulent practice. SOLUTION: The machine is provided with: an open/close detection sensor 60 capable of detecting open/close of a front door and outputting an open/close signal; and a sub-control board 5 capable of storing information related to a change of set value when a close signal from the open/close detection sensor 60 is received and a set value change signal for changing profit grant probability is received. When the sub-control board 5 receives the close signal from the open/close detection sensor 60 and receives the set value change signal, it performs control so that a display device 9, a speaker 11, and a lamp 27 inform the game machine that an error has occurred. COPYRIGHT: (C)2008,JPO&INPIT
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