PCB Technical - Introduction to the reverse push steps of pcb circuit board copy board

The process of copying the circuit board is to realize the rapid update and upgrade and secondary development of various electronic products by extracting some of the revisions and modifications in the technical data files. According to the document diagram and schematic diagram extracted from the copy board, it can be upgraded and optimized!

PCB board reverse push steps:

1. Record the relevant details of the PCB board.

Take a PCB board and record on the paper the model, parameter, and position of all components, especially the direction of the diode, the tertiary tube, and the direction of the notch. A digital camera can be used to take two photos of the component location. Many of the higher-level diode transistors of the circuit board copy board are not visible at all if they are not careful.

2, scan the image.

Take out all the equipment, and remove the tin from the PAD hole. The PCB board is cleaned with alcohol and then put into the scanner. When scanning, the scanned pixels need to be slightly adjusted to obtain a clearer image. Gently sand the upper layer and the bottom with water gauze paper until the copper sheet is shiny, put it in the scanner, start the PS, and scan the two layers in in color.

Introduction to the reverse push steps of PCB circuit board copy board

3. Correct the image.

Adjust the contrast and brightness of the picture to make the part with copper film and without copper film have a strong contrast, then change the second picture to black and white, and check whether the lines of the printed circuit board are clear. If it is not clear, repeat this step.

4. Check the position coincidence.

Convert the two BMP format files into PROTEL format files and PROTEL files respectively. For example, PAD and VIA basically overlap the positions of PAD and VIA through the two layers, indicating that the previous steps have been done well. If there is a deviation, repeat the first step. Three steps. Therefore, it is very patience to copy the PCB circuit board, because a small problem on the circuit board will affect the quality and matching of the circuit board copy board.

5. Draw the layer.

Convert the BMP of the TOP layer to TOPPCB, pay attention to the conversion to the SILK layer, which is the yellow layer, and then you are on the TOP layer, and place the device according to the drawing. After finishing drawing, delete the SILK layer. Continue to repeat until all layers are drawn.

6. Check.

Check whether the electronic technical performance of the copy board is the same as that of the circuit board.

Shenzhen Jingke Yulon Electronics Co., Ltd. is a manufacturer specializing in single, double-sided, multi-layer boards, high-precision boards, aluminum-based, copper-based, and various metal-based special boards. It has 300 employees and a workshop of 8,000 square meters. The production capacity is 20,000 square meters. The company has a series of advanced production equipment such as automatic copper sinking and slag removal-image electricity-etching line, LDI line solder mask exposure machine, text printing machine and other advanced production equipment. It is committed to high-precision PCB prototypes and supporting advanced equipment for rapid production of small and medium batches., Has cultivated an efficient team specializing in PCB production, and improved the management system from market development, engineering design, processing and manufacturing, quality assurance, and after-sales service.