| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that abnormality is determined since an error is generated in calculation of {(hit ball management counter)-(winning ball counter+out ball counter)} when a game ball is retained inside a retention device, when comparing the number of hit balls, the number of winning balls and the number of out balls and determining the number of the hit balls to check whether or not a failure of ball clogging or the like has occurred in an enclosed type game machine.SOLUTION: By detecting whether a game ball is retained in a retention device 100 and not determining the number of hit balls when the game ball is retained in the retention device 100, erroneous determination of abnormality is prevented even when the game ball is retained in the retention device 100 and an error is generated in the calculation of {(hit ball management counter)-(winning ball counter+out ball counter)}. |
