| 摘要 |
PROBLEM TO BE SOLVED: To easily detect fraudulent actions of fraudulently replacing main components or the like inside housing from a hole fraudulently opened at part of the housing of a game machine etc. together with the work of confirming the state of respective electronic devices or the like on a main control board etc. executed at least once a day etc. SOLUTION: When a hole 704 is opened at part of either one of the bottom plate 2b, side plates 2c and 2d, top plate 2e or back plate 2f of the housing 2, the presence/absence of light which is a signal flowing to an optical fiber 701 etc. as a signal line to be damaged or disconnected is detected by a power unit board etc. as a detection means. When a signal indicating abnormality is sent out to the main control board etc. as a main control means in such a case that the signal is not detected, error processing for reporting an error by light and sound and/or video images by a sub control board etc. is executed by the main control board. COPYRIGHT: (C)2009,JPO&INPIT
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