PCB copy plate process
The first step, get a piece of PCB, first on paper records all SAP a model, parameters, and the position, especially diode, plants in the direction of the tube, the direction of the IC gap. Had better use digital camera take two pictures of spirit a position.
The second step, tear down all of the device, and the hole will PAD of tin remove. With alcohol will PCB clean, and then put into the scanner inside, start POHTOSHOP, with color screen printing surface into a way, and print them out spare.
The third step, water yarn paper will TOP LAYER and BOTTOM LAYER two minor grinding, grinding to copper film shine, into the scanner, start PHOTOSHOP, with color way two layers into a respectively. Note that PCB put inside the scanner must cross flat straight trees, or scan image can't use.
The fourth step, adjust canvas contrast, shade, make a copper film part and no copper film part of the comparative and intense, and then switch diagram into black and white, check the line is clear, if not clear, then repeat this step. If clear, will survive for black and white BMP format file TOP. BMP and BOT. BMP.
The fifth step, two BMP format file format file, respectively to PROTEL in PROTEL in two call, such as two layers of PAD and VIA position basic coincidence that several steps before doing a good job, if there is deviation, then repeat step 3.
Sixth, the TOP. BMP into TOP. PCB, pay attention to into a SILK layer, the layer is yellow, and then you in TOP layer tracing is the second step, and according to the drawings placed device. After the draw will be deleted SILK layer.
Step 7, the BOT. BMP into BOT. PCB, pay attention to into a SILK layer, the layer is yellow, and then you in BOT layer tracing is. After the draw will be deleted SILK layer.
Step 8, in PROTEL will TOP. PCB and BOT. PCB call, the whole for a map with respect to OK.
Step 9, with laser printer will TOP LAYER, BOTTOM LAYER separately print to transparent film (the proportion of 1:1), the film on the piece of PCB, compare is wrong, if yes, you'll have it.