| 摘要 |
PROBLEM TO BE SOLVED: To provide an enclosed type game machine easily and accurately predicting the dirt and the wear of a component of a polishing mechanism, and notifying proper maintenance time.SOLUTION: An enclosed type game machine includes a polishing mechanism to polish game balls used in a game and collected, and supplies the game balls polished by the polishing mechanism to a shooting mechanism to circulate and use the game balls. The enclosed type game machine detects the operation amount of a game. The enclosed type game machine decides whether or not the detected operation amount of the game has become a threshold value or above (S41, S47). When having decided that the operation amount of the game has become the threshold value or above (S41: YES, or S47: YES), the enclosed type game machine notifies the effect that the maintenance time of the polishing mechanism has arrived. |
