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What should be paid attention to when repairing PCB circuit board

source:Industry News release time:2021-09-13 Article author:sznbone Popular:pcb

  With the continuous development of electronic products, PCB circuit boards have greatly increased the frequency of various equipment failures, and the requirements for maintenance personnel are also increasing, especially for maintenance personnel who have just touched the circuit board. I know how to start, but I don't know how to learn. In fact, if you want to learn circuit board maintenance, you must have a certain foundation of digital and analog power.

What should be paid attention to when repairing PCB circuit board(图1)

  The schematic diagram of the PCB circuit board is a blueprint to realize the functions required by the circuit user. The design of the PCB circuit board mainly refers to the layout design, which requires various factors such as internal electronic components, metal connections, through-holes and external connections, electromagnetic protection, heat dissipation, and crosstalk.

  PCB circuit board repair

  The circuit board needs fast, medium-speed, and low-level logic circuits to be placed close to the connector, while low-level logic and memory should be placed in the range of the principle connector. In this way, it is beneficial to reduce common impedance coupling, radiation and crosstalk. PCB circuit board

  What are the precautions for maintenance?

  1. Before maintenance, first do anti-static work, such as wearing anti-static overalls and shoes, and wearing an anti-static wrist strap. The maintenance workbench should also be treated with anti-static treatment, such as adding an anti-static table.

  2. Pay attention to the safety of electricity, including the maximum bearing capacity of the circuit board when the circuit board is powered on and repaired.

  3. Be sure to pay attention to personal safety when you need to contact with strong electricity, and take measures to prevent strong electricity.


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