| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique that easily analyzes whether a failure has occurred in a communication module or control board if a data communication module having a structure in which the communication module is mounted on the control board has trouble such as malfunction. ! SOLUTION: At a circuit board A, which is a good product, and a circuit board B, which is a defective product, electric connection between a communication module and a control board is cut off by a separating element. A measuring and inspecting instrument group 20 measures an electric signal output when the control board of the circuit board A and the communication module of the circuit board B are electrically connected, analyzes whether the communication module of the circuit board B is defective or not, and also measures an electric signal output when the communication module of the circuit board A and the control board of the circuit board B are electrically connected, analyzes whether the control board of the circuit |
