| 摘要 |
PROBLEM TO BE SOLVED: To attain the miniaturization and the cost reduction of control boards provided in a game machine and to prevent a player from being disadvantaged due to a power source off state. SOLUTION: In a power source substrate 34, the power sources of different voltages to be used for control boards 20, 22, 24, 29 and 31 are generated from an original power source and these power sources are supplied to respective correspondent control boards 20, 22, 24, 29 and 31. When a monitored power source voltage is lower than a prescribed power source detection voltage, a power source off signal is outputted from a power source off monitoring circuit 79 to the main control board 22 and the payout control board 24 and backup processing is performed for holding information held in both the control boards 22 and 24. In the power source off state of stopping the supply of the original power source to the power source substrate 34, a power source for backup is supplied from a capacitor 78 to both the RAM of the main control board 22 and the payout control board 24, and the stored information on both the RAM is held.
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