PCB Board Reverse Engineering Schematic Diagram
PCB Board Reverse Engineering Schematic Diagram
1 Choose those components like integrate circuit, transformer and transistor with relative bigger size, has tremendous leads or playing important role at the PCB board as the standard part, and then start to reverse engineering the schematic diagram from each leads of these components to avoid mistake.
2 If designators have been identified on the PCB board for each part, like VD870, R330, C466 etc. due to these designators are all carried out according to certain rules: components with the same first number behind the character are supposed to belong in the same functional unit, so engineer can take advantage of this point which is also the fundamental concept for reverse engineering PCB board schematic diagram.
3 If there is no designators on the PCB board silkscreen, in order to facilitate the analysis and evaluation of schematic after reverse engineering, engineer has to add designators onto it. ODM usually make the components which belong to the same functional unit as close to each other as possible to achieve the shortest copper circuit when design the PCB board. So if engineer can find the components who playing as the centre role can naturally find the other components within same functional unit.
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