Reflow oven repair personnel should have knowledge of electromechanical, automatic control, computer, etc. SMT equipment is a highly automatic control equipment, the technology used are more advanced, so another quality of maintenance personnel is to accept new knowledge and technology quickly. Tools for SMT reflow oven maintenance personnel: multimeter, oscilloscope, IC data or access to the relevant information online.
Here are three types of reflow soldering machine repair experience:
Cause of failure: DC speed motor carbon brush wear, too much carbon powder
Solution: Change the carbon brush and clean the toner.
Cause of failure: on the control board, the temperature analog signal is converted into a digital signal, which is amplified by IC, and the noise signal is generated.
Solution: replace the IC
Fault cause: heater fan does not turn, because the motor has been broken, and short circuit, switch trip.
Explain the way: replace the motor, reset switch.
