| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed board with which long time interval is not necessary for finding out a failed position. SOLUTION: This printed board is provided with a substrate 1 which is mainly constituted of insulator, and mounting components 2a-5a, 2b-5b, 3c-5c and wiring paths 6a-6c which are mounted on the substrate 1 and constitute several kinds of related circuit positions. In the printed board, the respective mounting components 2a-5a, 2b-5b, 3c-5c and wiring paths 6a-6c in the related circuit positions are constituted of different colors 1a-1c.
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