| 摘要 |
PROBLEM TO BE SOLVED: To achieve the reliability of inspection for whether electronic components are exchanged properly or not. SOLUTION: An exchangeable electronic component 200 is provided with a mark 210 for judging that the exchangeable electronic component 200 replaceable having functions equivalent to the electronic component 102 is used and the exchangeable electronic part 200 is mounted on a control board 100 by replacing the electronic component 102.
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