| 摘要 |
PURPOSE:To shorten the checking time together with improvement of the checking reliability by providing a control circuit part, a power supply part, etc. on a sheet of the separable printed board for each function. CONSTITUTION:Various circuits are provided on a printed board 175 for each function. For instance, a control circuit part consisting of a microprocessor 154, etc., a driver part consisting of a driver 157, etc. and a power supply part consisting of a DC power supply 171, etc. are provided on the substrates A, B and C respectively, A checking instrument 180 for the board 175 consists of a CPU 181 and a display device 184. A sensor 183 is provided opposite to a display part 5 of the board 175. Then the false load and switches are connected to connectors 109, 111 and 112 of the board 175. While the instrument 180 is connected to a connector 110. Then a self-diagnosis program is executed successively by the processor 154 for checking. |
