| 摘要 |
PROBLEM TO BE SOLVED: To provide a slot machine which prevents unauthorized change of settings. SOLUTION: A slot machine 3 is equipped with five setting change key cylinders 55a-55e and when a setting change key 55h is inserted in the right setting change key cylinder (starting keyhole) and is turned from an OFF position to an ON position, or from the ON position to the OFF position, a starting keyhole is selected and established in a lottery section 56a of a key cylinder setting section 56 after a shift to a game mode. Errors are announced by an alarm 91a if the setting change key 55h is inserted in the setting change key cylinders other than the starting keyhole. COPYRIGHT: (C)2007,JPO&INPIT
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