| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect unauthorized power on/off of a main board. <P>SOLUTION: A game machine includes: a main board for controlling a game including internal lottery processing, and a power supply section for supplying power to at least the main board. The game machine includes: an abnormal flag storage section for storing a flag indicating an abnormal condition of the power supply; and a voltage drop time measurement section for monitoring voltage of power supplied from the power supply section to the main board, measures the time when the voltage drops from a first predetermined threshold to a second threshold and sets the flag to the abnormal flag storage section when the measured time is shorter than the predetermined fault determination threshold. The game machine examines the flag in the abnormal flag storage section and determines a failure when the flag has been set, when supply of power is stopped and then started again. <P>COPYRIGHT: (C)2012,JPO&INPIT |
