Daewoo KOR-630A9A, KOR-630A1A, KOR-630A0A 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. 110Ω ±10% Filament winding....................................Approx. 0Ω Primary winding .....................................Approx. 1Ω

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 For Safe OperationSpecifications KOR-630A0A, KOR-630A1A KOR-860A0A, KOR-860A1AOuter Dimension External ViewFeature Diagram Control Panel Installation Leave space behind and sideWattage output chart Operations and FunctionsDisassembly and Assembly To remove cabinet REF no Part Code Part Name Description ’TY Remark Part Code Part Name DescriptionPage To remove control panel parts To remove high voltage capacitor To remove wind guide assembly Interlock Mechanism and Adjustment AdjustmentTrouble Shooting Guide Check ResultCheck Relay RY1 Continuity 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 KOR-630A1A/KOR-860A1A Circuit Check Procedure Printed Circuit BoardCheck Point Remark Measure Point Wave Form Remedy RemarkMeasure Point State Point Relay 2 on GNDRelay 2 OFF State Point Relay 1 onPCB Circuit Diagram Name Symbol Specification Part Code QTY C.B. Location noCapacitor Elec EC1 50V RS IMF Wire Copper SJ1,SJ3 TIN Coating Exploded View and Parts List Door AssemblyPart Code Part Name Description QTY CONTROL-PANEL AS KOR-860AOA CONTROL-PANEL AS Total ASSEMBLYKOR-630A1A/860A1A Special Screw T1 TRS 4*10 SE Mfzn KOR-860A1A

KOR-630A0A, KOR-630A1A, KOR-630A9A specifications

The Daewoo KOR-630 series of microwave ovens, including models KOR-630A9A, KOR-630A1A, and KOR-630A0A, represent a blend of innovative technology and user-friendly designs tailored for modern cooking needs. This range positions itself as a reliable choice for households seeking efficiency and performance.

One of the standout features of the KOR-630A9A, KOR-630A1A, and KOR-630A0A is their impressive power output. These models typically offer a microwave power of around 900 watts, ensuring quick heating and cooking times, which is essential for busy lifestyles. This power allows users to defrost, reheat, and cook meals in a fraction of the time compared to conventional methods.

The KOR-630 series incorporates advanced cooking technologies, including multiple power levels. This flexibility allows for precise cooking control, enabling users to select the ideal power output for various tasks, from gentle defrosting to robust cooking. Additionally, the ovens come equipped with various automatic cooking programs designed to simplify meal preparation. These pre-set options take the guesswork out of cooking, making it incredibly convenient for users of all skill levels.

In terms of design, the KOR-630 models boast a sleek and modern aesthetic that complements any kitchen decor. The user-friendly control panel features intuitive buttons and rotary dials, making it easy to navigate settings and adjust cooking times. The interior space is designed with practicality in mind, allowing for the accommodation of larger dishes, and features a durable and easy-to-clean surface.

Another key characteristic of the KOR-630 series is its safety features. Child safety locks are incorporated into the design, providing peace of mind for families with young children. Additionally, the ovens are built with an efficient cooling system, which helps prevent overheating during operation, contributing to both user safety and appliance longevity.

Overall, the Daewoo KOR-630A9A, KOR-630A1A, and KOR-630A0A microwave ovens demonstrate a commitment to quality, performance, and innovation. They succeed in enhancing the cooking experience while prioritizing convenience and safety, making them an excellent addition to any kitchen. Whether for reheating leftovers, defrosting frozen ingredients, or cooking meals from scratch, this series offers versatile solutions that cater to a wide range of cooking needs.
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