Daewoo KOR-63FB0S, KOR-63FB9S, KOR-63DB9S Component Test Procedure, High voltage transformer

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3.COMPONENT TEST PROCEDURE

•High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle.

•It is neither necessary nor advisable to attempt measurement of the high voltage.

•Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor.

1.High voltage transformer

(1)Remove connections from the transformer terminals and check continuity.

(2)Normal readings should be as follows:

Secondary winding ...................Approx. 140Ω ±10% Filament winding....................................Approx. 0Ω Primary winding .....................................Approx. 2Ω

2.High voltage capacitor

(1)Check continuity of capacitor with meter on the highest OHM scale.

(2) A normal capacitor will show continuity for a short time, and then indicate 10MΩ once the capacitor is charged.

(3)A shorted capacitor will show continuous continuity.

(4)An open capacitor will show constant 10MΩ .

(5)Resistance between each terminal and chassis should be infinite.

3.High voltage diode

(1)Isolate the diode from the circuit by disconnecting the leads.

(2)With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals. Reverse the meter leads and again observe the resistance reading.

Meter with 6V, 9V or higher voltage batteries should be used to check the front-back resistance of the diode, oth- erwise an infinite resistance may be read in both directions.

A normal diode’s resistance will be infinite in one direction and several hundred KΩ in the other direction.

4. Magnetron

For complete magnetron diagnosis, refer to “Measurement of the Microwave Power Output”. Continuity checks can only indicate and open filament or a shorted magnetron.

To diagnose for an open filament or a shorted magnetron.

(1)

Isolate magnetron from the circuit by disconnecting the leads.

(2)

A continuity check across magnetron filament terminals should indicate 0.1Ω or less.

(3)A continuity check between each filament terminal and magnetron case should read open.

5.Fuse

If the fuse in the primary and monitor switch circuit is blown when the door is opened, check the primary and monitor switch before replacing the blown fuse.

In case the fuse is blown by an improper switch operation, replace the defective switch and fuse at the same time. Replace just the fuse if the switches operate normally.

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Contents Microwave Oven Table of Contents Safety and Precautions Do not Attempt to Operate this Appliance with the Door OpenSpecifications KOR-63DB9S KOR-63DB0SKOR-63FB9S KOR-63FB0S Outer Dimension External ViewFeature Diagram Control Panel MINStart Speedy CookInstallation Steady, flat locationWattage output chart Operations and FunctionsDisassembly and Assembly To remove door assembly To remove cabinetTo remove door parts REF no Part Code Part Name Description ’TY RemarkPage To remove control panel parts High voltage circuit wiring To remove magnetron To remove high voltage capacitorTo remove wind guide assembly To remove H.V.transformerInterlock Mechanism and Adjustment AdjustmentTrouble Shooting Guide ConditionCheck Result CauseCheck Result Cause RemedyCheck Result Cause Remedy Relay RY1Continuity of the membrane Touch Assembly Programming Measurement of the Microwave Power Output ProcedureMeasurement and Test Procedures Microwave Radiation TestComponent Test Procedure High voltage transformerWiring Diagram Circuit Check Procedure Printed Circuit BoardLoad No Load Check Point RemarkMeasure Point State Point GNDCheck no Method Point Wave FormPCB Circuit Diagram Name Symbol Specification Part Code QTY C.B. Location noExploded View and Parts List Door AssemblyTotal Assembly Part Code Part Name Description QTY Switch Push Switch S/A Relay DWSR-1Fuse HV Trans HVNO. R63DB9S002
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KOR-63DB0S, KOR-63DB9S, KOR-63FB9S, KOR-63FB0S specifications

Daewoo, a well-established brand known for its innovative home appliances, has made waves in the microwave oven market with its models KOR-63FB0S, KOR-63FB9S, KOR-63DB9S, and KOR-63DB0S. These models exemplify a commitment to both functionality and modern design while incorporating advanced technologies to enhance the cooking experience.

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