Publisher's Synopsis
Excerpt from Inspection for Circuit Board Assembly
The assembly of circuit boards is performed in a single manufacturing stage, which is followed by several successive inspection stages. Assembled circuit boards have to be inspected for manufacturing defects and defective components. The inspection process at each stage includes three different activities: testing, diagnosis and repair. In testing, one or more measurements are taken from a board, and a decision is made whether to accept or reject a boards - The defect on a rejected board is identified during diagnosis, and is corrected during repair. Diagnosis is often the most difficult and time consuming task and the degree of difficulty depends on the board type and the type of test that is performed. The main focus of this paper is on testing, and henceforth repair refers to diagnosis as well as repair.
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