PCB Technical - What are the steps and methods for PCB circuit board debugging?

What are the steps and methods for PCB circuit board debugging?

For a new PCB template, novices often encounter some difficulties in debugging, especially when the template is relatively large and there are many components, they are often unable to start. So, what are the steps and methods for PCB circuit board debugging?

1. Board surface observation and resistance check

First of all, it is necessary to observe whether there are any problems on the board, such as whether there are cracks, short circuits, open circuits, etc. If necessary, check whether the resistance between the power supply and the ground wire is large enough.

Second, install components

Independent modules, when you are not sure that they are working properly, it is best not to install all of them, but install them part by part, so that it is easy to determine the PCB fault range.

Three, detect the output voltage of the power supply

Generally speaking, you can install the power supply first, and then power on to check whether the output voltage of the power supply is normal. When powering up, consider using an adjustable regulated power supply with current limiting function.

Four, preset overcurrent protection current

Preset the overcurrent protection current first, then slowly increase the voltage value of the regulated power supply, and monitor the input current, input voltage, and output voltage. If there is no overcurrent protection and other problems during the upward adjustment process, and the output voltage has reached normal, it means that the power supply is normal.

Five, install other modules and power-on test

Install other modules gradually, and power on and test every time a module is installed, so as to avoid over-current and burnout of components due to design errors or component installation errors.

The above are the steps and methods of PCB circuit board debugging detailed by professional PCB manufacturers. Have you mastered it?

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