The PCB AOI equipment can be "adjusted" according to the needs of the assembled circuit board. For example, replacement parts may be marked as defective because their markings and shapes do not meet the standard. However, AOI equipment can be adjusted and programmed to accept specific replacement parts, which will not be marked on the following printed circuit boards. This is the procedure is manually adjusted, what is acceptable and what is unacceptable. The unacceptable part of the test will be fed back to our operators.

AOI equipment can also adjust some unacceptable problems into the program, and capture defects that were previously difficult to find through visual inspection. Manual inspection requires technicians to check every part, mark and solder joint on the circuit board, which may involve thousands of details of a complex circuit board. With so many details to check, it is easy to understand why imperfections are missed. AOI equipment can quickly check the qualified and unqualified positions after adjusting the programming.