| 摘要 |
<p>PROBLEM TO BE SOLVED: To discriminate short circuit of a contact and removal of a connection part.SOLUTION: A setup key switch 72 includes: an off state where a contact 1 and a COM become a non-connected state and a contact 2 and the COM becomes a connected state; an on state where the contact 1 and the COM become the connected state and the contact 2 and the contact COM become the non-connected state; and an intermediate state where the contact 1, the contact 2, and the COM become non-connected state. A key setup switch signal to inputs in the contact 1 and the contact 2 is input in a main control board 50, and a setup key switch abnormal signal detection signal to inputs of the contact 1, the contact 2, and the COM is input in the main control board 50. The game machine is so configured that, when a circuit connected to the contact 1 or to the contact 2 and a circuit connected to the COM are short-circuited, and when the connection between the setup key switch 72 and the main control board 50 is removed, the logic of the setup key switch abnormal detection signal is reversed.</p> |
