| 摘要 |
PURPOSE:To perform a diagnosis simultaneously with the other doagnostic work, by simultanseously recording disconnection check data in each electric circuit once to a RAM and then totally checking the data. CONSTITUTION:At a diagnosis of disconnection in, for instance, an electromagnetic pick up 5g, a relay 7A is interposed between the pick up and a computer 6, if a relay driver 7i is operated by an external signal, the computer 6 is disconnected from the pick up 5g for a very short time, and a power source 7g is connected to a circuit of resistor 7h, relay 7A, wiring 5a and pick up 5g and to a central processing unit 7f through a wiring 5b and the relay 7A, in this way, a high level is recorded to a RAM prescribed address, if in case of disconnection, a low level value is recorded. When these check data are all at a high level, a green lamp is displayed, if any of the data is at a low level, disconnection provided in a circuit corresponding to the check data is informed by indication to a display unit. |
