The control panel of the microwave oven, a microwave tube, tray rotation mechanism, the cooling fan, the gate protection circuit are similar to a conventional microwave oven, use a different microwave frequency transformers ordinary transformer, the power to the magnetron, and a microwave switching power supply which and the power circuit to drive a magnetron for generating microwaves. This board through two optical coupling device to exchange information with the control panel, in order to carry out related operations and power adjustment. Power drive circuit shown in FIG.MVfservice manual download site

Q701 (GT50J327), Q702 (GT35J321) type of IGBT power tube, T701 (608YM300GP) is the switching transformer.MVfservice manual download site
 MVfservice manual download site

D701, D702, C706, C707 composition voltage doubler rectifier circuit, which operates in several components of high frequency high voltage state, perishable, often resulting in insufficient hypertension. The investigation C707 (432J/3.OkV) capacity becomes smaller, resulting in reduced pressure, resulting in decreased output power microwave tube. After heating the normal ones.MVfservice manual download site