PCB, the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Because it is made by electronic printing, it is called a "printed" circuit board.
PCB diagnosis needs to be connected to the computer during use, and the test software should be installed. The tested circuit board is offline, and the circuit board fault detector is used to apply test signals and working power to the circuit board during the test.