Since its establishment 15 years ago, Shenzhen OROD has specialized in PCB copy business. As the company’s scale continues to grow and develop, it is in its leading position in PCB copy board, chip decryption, circuit diagram revision, BOM parameter test, reverse push schematic, prototype debugging production, and PCB finished product mass production. OROD can submit more than 20 successful cases every day.
1, Get a PCB, first record the model, parameters, and location of all components on the paper, especially the direction of the diode, the triode, and the IC gap’s trend. It is best to use a digital camera to take two photos of component locations. The more advanced the PCB circuit board is, the more inadequate It can’t see the diode transistor at all.
2, Remove all devices and remove the tin in the PAD hole. Clean the PCB with alcohol, and then put it into the scanner. When the scanner scans, it needs to adjust the scanned pixels slightly to get a clearer image. Then lightly polish the top and bottom layers with gauze paper until the copper film is shiny;
put it into the scanner, start PHOTOSHOP, and scan the two layers separately in color. Note that It must place the PCB horizontally and vertically in the scanner. Otherwise, It cannot use the scanned image.
3, We Adjust the contrast brightness, and darkness of the canvas to make the part with copper film and the region without copper film have strong contrast. Then, turn the sub-picture to black and white to check whether the line is clear. If it is not clear, repeat this step. If it is clear, save the picture as black and white BMP format files TOP.BMP and BOT.BMP; if you find a problem with the image, you can use PHOTOSHOP to repair and correct it.
4, Convert the two BMP format files into PROTEL format files and transfer two layers in PROTEL. For example, PAD and VIA positions in the two layers coincide, indicating that the previous steps have been done well. If there is a deviation, repeat the third step. So PCB copying is a very patient job because a small problem will affect the quality and the degree of matching after copying.
PCB copy board
The fifth step is to convert the BMP of the TOP layer to TOP.PCB, pay attention to the SILK layer, which is the yellow layer, then you can trace the line on the TOP layer and place the device according to the drawing of the second step. Delete the SILK layer after painting. Repeat until all layers are drawn.
The sixth step is to transfer the TOP.PCB and BOT.PCB in PROTEL and combine them into one picture.
The seventh step is to use a laser printer to print the TOP LAYER and BOTTOM LAYER on transparent film (1:1 ratio), but the movie on that PCB, and compare whether it is wrong. If yes, you are done.
A copy board was the same as the original board was born, but it was only half-finished. There is also a test to test whether the copy board’s electronic technical performance is the same as the original board. If it is the same, then it is done.