Daewoo KOG-393R0S, KOG-371H0S, KOG-373R0S, KOG-374R0S, KOG-375R0S Disassembly and Assembly

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DISASSEMBLY AND ASSEMBLY

Cautions to be observed when trouble shooting

Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is completely safety during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit.

You are asked to observe the following precautions carefully.

1.Always remove the power plug from the outlet before servicing.

2.Use an insulated screwdriver and ware rubber gloves when servicing the high voltage side.

3.Discharge the high voltage capacitor before touching any oven components or wiring.

(1) Check the earthed.

Do not operate on a two wire extension cord.

The microwave oven is designed to be used with earthed.

It is imperative, therefore, to makes sure it is earthed properly before beginning repair work.

(2) Warning about the electric charge in the high voltage capacitor. For about 30 seconds after the operation stopped, and electric charge remains in the high voltage capacitor. When replacing or checking parts, short between oven chassis and the negative high terminal of the high voltage capacitor, by using a properly insulted screwdriver to discharge.

4. When the 15A fuse is blown out due to the operation of the monitor switch; replace primary interlock switch, secondary interlock switch and interlock monitor switch.

Refer to next page for the necessary adjustment.

5.After repair or replacement of parts, make sure that the screws are properly tightened, and all electrical connections are tightened.

6.Do not operate without cabinet.

CAUTION : Service personnel should remove their watches whenever working close to or replacing the magnetron.

WARNING : When servicing the appliance, need a care of touching or replacing high potential parts because of electrical shock or exposing microwave. These parts are as follows-HV Transformer, Magnetron, HV Capacitor, HV Diode. HV Fuse.

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Contents Microwave Oven Table of Contents For Safe Service Procedures Safety and PrecautionsFor Safe Operation KOG-391G/H/R0S SpecificationsModel KOG-376T1S KOG-396T1SOuter Dimension External View465 360 Feature Diagram Heating Element Oven Cavity Sefety Interlock SystemKOG-376T1S, KOG-396T1S KOG-371R0S, KOG-391R0S KOG-374R0S KOG-375R0S KOG-373R0S, KOG-393R0S Control Panel KOG-371G0S, KOG-391G0SKOG-371H0S, KOG-391H0S KOG-376T1S, KOG-396T1S Grill/Combi Stop/Clear Stop/Clear Start/Easy Cook Auto cook Installation Earthing InstructionsWattage output chart Operation and FunctionsDisassembly and Assembly To remove door assembly To remove cabinetTo remove door parts REF. no Part Code Part Name Description QTY RemarkPage Frame Door ABS Page REF no Part Code Part Name Description ’TY Remark Decorator DOOR*TPage Screw Tapping T2SN TRS 4X16 Mfzn Page BARRIER-SCREEN*0 SAN Page To remove control panel parts CONTROL-PANEL ABS Control Panel Knob Volume Button Function Button Fuction *A High voltage circuit wiring To remove magnetron To remove high voltage capacitorTo remove wind guide assembly To remove H.V.transformerTo remove tray motor To remove heater assmblyTo remove heater parts Interlock Mechanism and Adjustment AdjustmentInterlock Mechanism and Adjustment Trouble Shooting Guide Check ResultCheck Check Result Cause Cause Remedy Heating time for power output ProcedureMeasurement and Test Microwave Radiation Test High voltage diode High voltage transformerHigh voltage capacitor MagnetronWiring Diagram KOG-396T1S Voltage Check Key check point Printed Circuit Board KOG-371G/H0S, KOG-391G/H0SLow voltage transformer check Check Point RemarkMesurement point Point State Point State Relay 2 on 5VDC GND Relay 2 OFFPoint State Relay 1 on 5VDC GND Close GND Check no Hethod RemedyC.B. Circuit Diagram Name Symbol Specification Part Code ’TY C.B. Location noR15 6W 10K 5% Printed Circuit Board KOG-376T1S, KOG-396T1S Wave Form Remedy RemarkMesurement point 24VDC Point State Relay 3 on 5VDC GNDC.B. Circuit Diagram C.B. Location no KOG-396T1S Printed Circuit Board KOG-371R0S, KOG-391R0S Mesurement point Point State Relay 2 on 5VDC GND Relay 2 OFF C.B. Circuit Diagram Name Symbol Specification Part Code ’TY Remark J1~J17, SJ1 Circuit Check Procedure Printed Circuit Board KOG-374R0S, KOG-375R0SMesurement point Point State Relay 2 on 5VDC GND Relay 2 OFF C.B. Circuit Diagram Name Symbol Specification Part Code QTY Remark Printed Circuit Board KOG-373R0S, KOG-393R0S Mesurement point Point State Relay 2 on 5VDC GND Relay 2 OFF C.B. Circuit Diagram Wire Copper TIN Coating J3, J5~J10, SJ1 Exploded View and Parts List KOG-371G/H/R0S, KOG-391G/H/R0S Total AssemblyREF no Part Code Part Name Description QTY Foot KOR-86150S KOR-61150S Exploded View and Parts List KOG-376T1S, KOG-396T1S CONTROL-PANEL AS Special Screw TT3 TRS 4X8 FLG Mfzn KOG-396T1S Part Code Part Name Description Supply Remark Exploded View and Parts List KOG-374R0S Special Screw TT3 HEX 4X8 Mfzn Exploded View and Parts List KOG-375R0S KOG-375R0S Exploded View and Parts List KOG-373R0S, KOG-393R0S Heater AS Foot 100 101 Printed Date Dec