Drilling and troubleshooting

To complete the PCB process, the circuit board was fixed to a piece of wood or box. The holes on the circuit board was drilled (holes should be at least 0.1mm bigger than pins or wires) by using Pro'skit drill set. The drilling process is shown in figure below.

After complete drill the holes, the connection between the tracks must be checked and troubleshoot by using multimeter. It is useful to know the tracks is connect to each other or not. If there are no connection between the tracks, the jumper wire can be used to solve the problem. The checking and troubleshoot process is shown in figure below.