What is the whole process of PCB replication?

Pcb copying, that is, PCB copying, is roughly divided into ten steps, which I will explain one by one below.

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Ten steps of pcb copying

The first step is to get a PCB. Firstly, the model, parameters and position of all gas components are recorded on paper, especially the direction of diode, diode and IC gap. It is best to scan two photos of the gas composition position with a scanner, which is very helpful to restore the prototype in the future.

Step 2, remove all devices and remove tin from the pad hole. Clean the pcb blank with ultrasonic wave, and then put it into the scanner. Note that the PCB must be placed horizontally and vertically in the scanner, otherwise the scanned image cannot be used. Then open Photoshop software and enter the scanner. After the scanner is started, set the scanning DPI "resolution" according to different densities. If it is set to 600DPI. Color scanning screen printing surface, save name customization. The bottom screen printing method is the same.

Step 3, polish the top and bottom layers slightly with water gauze paper until the copper film shines, put them into the scanner, start PHOTOSHOP software, and scan and save the two layers in color. Note: PCB must be placed horizontally and vertically in the scanner.

Step 4, adjust the size, contrast and brightness of the canvas to make the part with copper film have a strong contrast with the part without copper film, and then turn the sub-picture into black and white to check whether the lines are clear. If not, repeat this step. If it is clear, save the chart as a black-and-white BMP file TOP. BMP and BOT The extension of the Bitmap file (bitmap)

Fifth, the two BMP files are converted into PROTEL files and the two layers are converted into PROTEL files. If the positions of the pads and vias passing through the two layers basically coincide, the previous steps are well done. If there is any deviation, repeat step 4 of step 3.

Step six, change the gyro. BMP enters the top. PCB, pay attention to the silk layer, that is, the yellow layer, and then you can trace the line on the top layer and place the device according to the drawing in the second step. Delete the silk layer after painting.

Step seven, put BOT. Convert BMP into BOT. PCB, pay attention to the silk layer, that is, the light yellow layer, and then you can trace lines on the BOT layer. Delete the silk layer after painting.

Step 8, put the gyro in PROTEL. PCB and BOT. It is also possible to transfer the PCB and combine it into a picture.

Step 9: The process of copying boards in the middle layer is the same. Repeat steps 6-7, and the final output PCB file is a multi-layer PCB diagram exactly like the real thing.

Step 10: Compare the original image with the file 1: 1 after copying the pcb. If it's right, you're done. I'm glad to discuss it with you. I am in charge of Technology Co., Ltd. in Hangzhou, which is a very professional copying company.