| 摘要 |
<p>PROBLEM TO BE SOLVED: To specify the cause of abnormality of transmission at once by utilizing to be able to judge that the abnormality is found in a circuit of a transmitter when a supply voltage of a battery exceeds a predetermined value and a transmit voltage is not less than a predetermined value, and by detecting and informing the abnormality. SOLUTION: In a portable transmitter A, when a power supply voltage is below a predetermined value, or when the power supply voltage exceeds the predetermined value and a transmit voltage of the transmitter exceeds the predetermined value, operation indicating signals are transmitted from an antenna 5 respectively. In an on-mounted receiver B, a power supply abnormal code or a circuit abnormal code is supplied to a LCD driving driver 13 from a diagnostic memory 17, and consumption of a battery or an abnormal message of an accident of the transmitter is displayed on a LCD panel 14. Accordingly, users can correctly confirm that the cause of abnormality of a remote control device is in the accident of a circuit, and the transmitter can be adequately repaired.</p> |
