| 摘要 |
PROBLEM TO BE SOLVED: To easily and/or surely perform an additional connection of a game information collecting device (e.g. a machine unit 122). SOLUTION: A detecting circuit 112 of an already installed machine unit 110, which is removed from a switch circuit 104 of a game machine 102, and an outputting circuit 158 of a branching board 148 are connected using connecting wires 166a and 166b. Then, a common connecting point 135 of a detecting circuit 124 of the machine unit 122 to be newly installed, and one parallel connecting point 155a of an inputting circuit 150 of the branching board 148 are connected using a connecting wire 142a. Then, one parallel connecting point 107a of the switch circuit 104 of the game machine 102, and the other parallel connecting point 155b of the inputting circuit 150 of the branching board 148 are connected using a connecting wire 142b. Then, the other parallel connecting point 107b of the switch circuit 104 of the game machine 102, and one end of a resistor 138 of the detecting circuit 124 of the machine unit 122 to be newly installed are connected using a connecting wire 142c.
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