Daewoo KOR-63FB0S, KOR-63FB9S, KOR-63DB9S, KOR-63DB0S Check Result Cause Remedy, Relay RY1

Page 20

(TROUBLE 3) No microwave oscillation even though fan motor rotates.

CONDITION

 

CHECK

 

RESULT

 

CAUSE

 

 

 

 

 

 

 

REMEDY

No

microwave oscillation

Continuity

Check continuity of high

voltage fuse

Replace high voltage fuse

 

 

 

 

Continuity

Check continuity of high

 

 

 

 

 

 

 

 

voltage capacitor terminals

 

 

 

with wires removed

 

 

 

 

 

 

 

 

Check continuity of high voltage

 

 

 

 

Continuity in

 

 

 

 

rectifier in forward and backward

 

 

 

backward

direction with DC megger

 

 

 

direction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continuity

Connect megger leads to mag-

 

 

 

 

 

 

 

 

 

 

 

netron terminal and magnetron

 

 

 

 

body

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 Ω or ∞

Check resistance of primary and

 

 

 

 

 

 

 

 

 

 

 

secondary coil of high voltage

 

 

 

 

transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Check continuity of magnetron

 

 

 

 

 

 

Continuity

with wires removed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Check continuity of filament termi-

 

 

 

 

 

 

Continuity

nal of high voltage transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 V

Check D.C. voltage being sup-

 

 

 

 

 

 

 

 

 

 

 

plied to RELAY (RY1) coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Approx

 

 

 

 

 

 

 

 

 

 

15 VDC

 

 

 

 

 

 

Defective high voltage trans- former

Defective high voltage rectifier

Defective mag-

netron

Defective high voltage trans- former

Defective mag-

netron

Defective high voltage trans- former

Defective touch

control circuit

Faulty

contacts or

RELAY (RY1)

or open

relay coil

Replace

Replace

Replace

Replace

Replace

Replace

Replace

Replace

19

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Contents Microwave Oven Table of Contents Safety and Precautions Do not Attempt to Operate this Appliance with the Door OpenKOR-63FB9S KOR-63FB0S SpecificationsKOR-63DB9S KOR-63DB0S 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 and Test Measurement of the Microwave Power OutputProcedure 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 noTotal Assembly Exploded View and Parts ListDoor 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.

The KOR-63FB0S and KOR-63FB9S are standout models that offer a sleek and stylish exterior coupled with powerful cooking performance. Both are equipped with inverter technology, which allows for precise temperature control and even cooking. This innovation ensures that food is heated uniformly, minimizing the risk of hotspots that can occur with traditional microwave ovens. The KOR-63FB9S also features a premium stainless steel finish, adding a touch of elegance to any kitchen.

On the other hand, the KOR-63DB9S and KOR-63DB0S focus on providing users with an intuitive interface. These models come with a user-friendly digital display and touch controls, making it easier to navigate various cooking settings. The one-touch cooking options offer convenient presets for popular dishes, allowing users, even those with limited cooking experience, to prepare meals effortlessly.

All four models boast a spacious internal capacity, accommodating large dishes and multiple servings—ideal for families or gatherings. The microwave ovens feature a power output of 1000 watts, ensuring quick and efficient cooking. The defrost function is particularly noteworthy, enabling precision thawing of meats and seafood, which helps to preserve the texture and flavor of ingredients.

Safety is a priority for Daewoo, and these models are equipped with child safety locks, preventing unintended use and giving parents peace of mind. The removable and washable turntable also enhances ease of cleaning, making maintenance hassle-free.

In summary, the Daewoo KOR-63FB0S, KOR-63FB9S, KOR-63DB9S, and KOR-63DB0S combine cutting-edge technology with modern aesthetics, catering to both style-conscious consumers and those seeking convenient cooking solutions. With features such as inverter technology, user-friendly digital interfaces, and robust safety measures, these microwaves stand out as excellent choices for anyone looking to upgrade their kitchen appliances.
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