Goldstar MA-2005ST service manual How does the microwave oven operate?

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4-2. How does the microwave oven operate?

After plugging your oven into a standard household socket, press start button or turn the timer. And then switches (primary, secondary, timer) close the circuit.

Eventually the input power will be applied to turntable motor, timer motor, fan motor, oven lamp and high voltage transformer. A high voltage of 2,100 volts AC is generated in the second winging of H.V.Transformer. And the voltage is doubled by H.V.Capacitor & H.V.Diode. The 4Kv DC voltage is applied to filament of magnetron, then magnetron start to produce microwave. This microwave is injected to cavity.

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Contents Microwave Oven Safety Precautions Type of Microwave Oven Function & Type 1/2How a Microwave Oven Works Grill Cooking Function & Type 2/2Installation Installation & Utensils 1/2Cooking Utensils Installation & Utensils 2/2Principle of dielectric heating What’s the microwave? 1/2History of dielectric heating Definition of electric wave Safety of microwave ovenWhat’s the microwave? 2/2 Conventional heating Conventional heating vs. dielectric heatingController Construction of microwave ovenCavity DoorHow does the microwave oven operate? Input Senondary Winding AT Microwave generation systemMagnetron 1/2 Microwave generation systemMagnetron 2/2 Testing Magnetron TubeMultiwave system What is Multi-WaveWhat’s the infrared sensor? Infrared sensorLG’s Auto Moving Heater Auto moving heaterWhat’s does move automatically? Conventional HeaterSpecifications Control Panel FeaturesOperating Sequence Schematic Circuit Description Necessary Measuring Instruments Tools and Measuring InstrumentsMicrowave Leakage Test Necessary ToolsRecord Keeping and Notification After Measurement Measurement with Outer Case RemovedMeasurement with a Fully Assembled Oven Control Panel Assembly Measurement of Microwave Power OutputDisassembly and Adjustment Power Supply CordDoor Main Assembly Removal PCB Assembly RemovalRemoving the Turntable Motor AIR Duct Assembly RemovalMagnetron Removal Interlock System FAN Motor Assembly RemovalHigh Voltage Transformer Removal High Voltage Capacitor and Diode RemovalInterlock Continuity Test Primary Interlock Switch TestSecondary Interlock Switch Test Monitor Switch TestComponents Test Procedure Component Test ProcedureComponents Test Procedure Results Relay Condition Cause Remedy Trouble ShootingResult Result Condition Check Defective PCB assembly Defective high voltage transformer Introduction Exploded ViewDoor Parts Controller Parts Oven Cavity Parts Latch Board Parts Interior Parts Base Plate Parts Schematic Diagram of P.C.B Printed Circuit Board