Goldstar MA-2005ST High Voltage Transformer Removal, FAN Motor Assembly Removal, Interlock System

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I. HIGH VOLTAGE TRANSFORMER REMOVAL

1)Discharge the high voltage capacitor.

2)Disconnect the leadwire from magnetron, high voltage transformer, and capacitor.

3)Remove the screw holding the high voltage transformer to the baseplate.

J. FAN MOTOR ASSEMBLY REMOVAL

1)Discharge the high voltage capacitor.

2)Disconnect the leadwire from fan motor and high voltage capacitor.

3)Remove the two screws holding the the suction guide ASSÕY to the oven cavity and remove the high voltage diode earth screw.

4)Remove the two screws holding the fan motor ASSÕY to the suction guide ASSÕY.

K. HIGH VOLTAGE CAPACITOR AND DIODE REMOVAL

1)Discharge the high voltage capacitor.

2)Disconnect the leadwire from fan motor and high voltage capacitor.

3)Remove the screw holding the suction guide ASSÕY to the oven cavity and remove the high voltage diode earth screw.

4)Remove the screw holding the high voltage capacitor bracket.

 

Fan Motor ASS'Y

 

Suction￿

 

Guide

H.V.￿

H.V.￿

Capacitor

Transformer

 

 

H.V.￿

 

Diode

L. INTERLOCK SYSTEM

1) INTERLOCK MECHANISM

The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage.

ADJUSTMENT￿

DIRECTION

SECONDARY￿

SWITCH

MONITOR￿

SWITCH

PRIMARY￿

SWITCH

2)MOUNTING OF THE PRIMARY/MONITOR/ SECONDARY SWITCHES TO THE LATCH BOARD

3)INSTALLATION AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN ASSEMBLY

¥Mount the latch board to the oven assembly.

¥Adjust the latch board in the arrow direction so that oven door will not have any play in it when the door is closed.

¥Tighten the mounting screw.

¥Check for play in the door by pushing the door release button. Door movement should be less than 0.5 mm. (1/64 inch)

Don't push the door release button while making this adjustment. Make sure that the latch moves smoothly after adjustment is completed and that the screws are tight. Make sure the primary, monitor, and secondary switches operate properly by following the continuity test procedure.

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Contents Microwave Oven Safety Precautions How a Microwave Oven Works Function & Type 1/2Type of Microwave Oven Function & Type 2/2 Grill CookingInstallation & Utensils 1/2 InstallationInstallation & Utensils 2/2 Cooking UtensilsHistory of dielectric heating What’s the microwave? 1/2Principle of dielectric heating What’s the microwave? 2/2 Safety of microwave ovenDefinition of electric wave Conventional heating vs. dielectric heating Conventional heatingConstruction of microwave oven CavityDoor ControllerHow does the microwave oven operate? Input Senondary Winding AT Microwave generation systemMagnetron 1/2 Testing Magnetron Tube Microwave generation systemMagnetron 2/2What is Multi-Wave Multiwave systemInfrared sensor What’s the infrared sensor?Auto moving heater What’s does move automatically?Conventional Heater LG’s Auto Moving HeaterSpecifications Features Control PanelOperating Sequence Schematic Circuit Description Tools and Measuring Instruments Microwave Leakage TestNecessary Tools Necessary Measuring InstrumentsMeasurement with a Fully Assembled Oven Measurement with Outer Case RemovedRecord Keeping and Notification After Measurement Measurement of Microwave Power Output Disassembly and AdjustmentPower Supply Cord Control Panel AssemblyPCB Assembly Removal Door Main Assembly RemovalMagnetron Removal AIR Duct Assembly RemovalRemoving the Turntable Motor FAN Motor Assembly Removal High Voltage Transformer RemovalHigh Voltage Capacitor and Diode Removal Interlock SystemPrimary Interlock Switch Test Secondary Interlock Switch TestMonitor Switch Test Interlock Continuity TestComponent Test Procedure Components Test ProcedureComponents Test Procedure Results Relay Trouble Shooting Condition Cause RemedyResult Result Condition Check Defective PCB assembly Defective high voltage transformer Exploded View IntroductionDoor Parts Controller Parts Oven Cavity Parts Latch Board Parts Interior Parts Base Plate Parts Schematic Diagram of P.C.B Printed Circuit Board