To perform simply and surely and operation for turning on and off a large-scaled powder source system in a pachinko game hall according to a business schedule.

An operation-starting command is issued in order at a proper time interval to each island controller 8 from a concentrated control unit 9. Each island controller 8 responds to the operation starting command from the concentrated control unit 9 to turn on a switch (relay) for each kind of a load in a distribution board according to a predetermined time schedule in a predetermined order. At first, a power source for a ball lift section 7 is turned on to start the circulating operation of pachinko balls. After the passage of a predetermined time, a power source for a ball lending machine 3 is turned on an further later a power source for a pachinko machine bed 1 is turned just before the pachinko game hall is opened.