In electronics manufacturing, circuit boards (PCBs) precisely connect the various electronic components to ensure that devices perform as intended. Therefore, it is crucial to carry out thorough preparation and testing before putting a new board into service. This not only ensures the performance of the board, but also prevents possible failures and problems in the future. Today, Jetobang will teach you what preparations should be made before using the circuit board:
Visual inspection. First of all, a meticulous visual inspection is essential. This includes inspecting the circuit board for any physical damage, such as scratches or cracks, as well as any manufacturing defects, such as bad solder joints or missing components. This step quickly identifies obvious problems and thus avoids wasting time in subsequent tests.
Electrical testing. Next, electrical testing is performed to ensure that all circuits are properly connected according to the design drawings. This typically includes in-circuit test (ICT) and flying probe test. ICT can detect the quality of solder joints and the presence of components, while flying probe testing is used to check for issues such as open and short circuits.
Automated optical inspection.
Automated optical inspection (AOI) is another important test method. By capturing the PCB with a high-resolution camera and comparing it to the design file, AOI can detect even the smallest defects, such as component misalignment or very fine short circuits.
Functional validation. Finally, functional verification is performed to ensure that the board can work properly under actual conditions. This includes power-up testing and running the software or firmware on the board to verify that it meets all performance requirements.
Through these exhaustive preparations, we can ensure the quality and reliability of the PCB before it is put into use. That's all for today's sharing, if you still want to know something, please feel free to comment