The first step, get a PCB, first of all recorded on the paper all the pieces of the type, parameters, and location, especially the diode, the direction of the three machine tubes, IC notch direction. It is best to take a picture with two digital camera position digital camera.
The second step, remove all the components, and remove the tin from the PAD hole. Clean the PCB with alcohol, put it into the scanner, start POHTOSHOP, sweep the screen surface in color and print it out for backup.
The third step, the water yarn paper TOP LAYER and BOTTOM LAYER two lightly polished, polished to the copper film shiny, into the scanner, start PHOTOSHOP, with two layers of color were swept in. Note that the PCB placed in the scanner must be straight and straight, or the scanned image can not be used.
The fourth step is to adjust the contrast and brightness of the canvas so that there is a strong contrast between the portions of the copper film and the portions without the copper film. Then, turn the next figure to black and white to check if the lines are clear. If not, repeat this step. If clear, the picture will be saved as black and white BMP format files TOP.BMP and BOT.BMP.
The fifth step, the two BMP format files were converted to PROTEL format file transferred into the PROTEL two layers, such as two layers of PAD and VIA basically overlap, indicating that the first few steps to do well, if If there is deviation, repeat the third step.
Sixth, the TOP. BMP into TOP. PCB, pay attention to be converted to SILK layer, it is the yellow layer, and then you are in the TOP layer line is it, and according to the second step of the drawings place the device. SILK deleted after painting.
The seventh step, the BOT. BMP into BOT. PCB, pay attention to be converted to SILK layer, it is the yellow layer, then you are in the BOT layer line is it. SILK deleted after painting.
The eighth step, the PROTEL TOP. PCB and BOT. PCB transferred into, together as a map on the OK.
The ninth step, the laser printer TOP LAYER, BOTTOM LAYER were printed on transparencies (1: 1 ratio), the film on the PCB, compare the wrong, if not, you're done .