The diagram illustrates the process of producing circuit boards.
Overall, circuit-board production consists of nine stages, starting from delivery of material. Three of the steps in the beginning are not repeated, as well as the last two steps.
The first step in production of circuit boards is delivery of material to the lab. After that, it requires cutting and spraying with fire retardant. The third step is cleaning circuit boards.
The fourth stage is automated IC attachment and soldering. The fifth step is visual inspection and quality control testing. Visual inspection and quality control testing may have two decisions: if inspection and quality control rejects chips, they will be thrown away. If inspection and quality control approves, they go to the final testing.
Regarding the results of final testing, it goes to the packing and delivery to factories or to automated IC attachment and soldering again. The cycle will be repeated until final testing will be agreed.
