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PCB assembly Defect Coverage Using Automated Optical Inspection (AOI) Automated Optical Inspection (AOI), which is an automated visual inspection of a Printed Circuit Board (PCB), provides 100% visible component and solder-joint inspection. This testing method has been in use in PCB manufacturing for almost two decades. It plays a critical role in ensuring that there are no random faults in the assembly. The technique, which uses lighting, cameras, and vision computers, is incorporated in the assembly process to guarantee the highest possible quality throughout each phase of a product’s life cycle. The method enables fast and accurate inspection and can [...]