How do we check the PCB board after it is laid out?

PCB boards are very important in the production process, and maintenance after production is also very important. After the various wiring of the PCB circuit board is?completed, is the work completed??Of course, it is not finished yet. We need to check the work after the PCB board is laid out. How do we check the PCB board after it is laid out?

To do the final check, you need to check the following aspects:

1. ?Whether the distance between wires and wires, wires and component pads, wires and through holes, component pads and through holes, through holes and through holes is reasonable, and whether it meets the production requirements and design

the request of the person.

2. ?Whether the best measures have been taken for key signal lines, such as adding protective lines, and clearly separating input lines and output lines.

3. ?Whether the graphics (such as icons and labels) added to the PCB board after the PCB circuit board layout will cause a signal short circuit. ?Modify some unsatisfactory line shapes.

4. ?Whether there is a process line on the PCB board, whether the solder mask meets the requirements of the production process, and whether the character mark is pressed on the device pad to avoid affecting the quality of the electrical package.

quantity.

5. ?Whether the edge of the outer frame of the power supply ground layer in the multi-layer PCB board is reduced. ?If the copper foil of the power supply ground layer is exposed outside the board, it may easily cause a short circuit.