Daewoo KOR-122M0A Service Manual
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Daewoo KOR-122M0A Service Manual

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Service Manual
Microwave Oven
Model : KOR-122M0A
KOR-122Q0A
KOR-122M1A
KOR-122Q1A
Caution

: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEPT.

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Summary of Contents for Daewoo KOR-122M0A

  • Page 1 Service Manual Microwave Oven Model : KOR-122M0A KOR-122Q0A KOR-122M1A KOR-122Q1A Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).
  • Page 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? h @ ? e @ ? h @...

  • Page 3: Proper Use And Service Precautions

    @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ?

  • Page 4: Specifications

    SPECIFICATIONS POWER SUPPLY 120V AC 60Hz SINGLE PHASE WITH GROUNDING POWER CONSUMPTION 1380W MICROWAVE OUTPUT POWER 900W (IEC 705) FREQUENCY 2450 MHz OUTSIDE DIMENSIONS (WxHxD) 564x310x412mm (22.2x12.2x16.2 in.) CAVITY DIMENSIONS (WxHxD) 374x233x372mm (14.7x9.2x14.6 in.) NET WEIGHT APPROX. 16.5Kg (36.4 lbs.) TIMER 59 min.

  • Page 5: Features Diagram

    FEATURES DIAGRAM STAGE DEFROST AUTO WEIGHT TIME START LOCK CUPS Auto Cook MENU WEIGHT 1.Baked Potato 2.Fresh Vegetable 3.Soup 4.Fish Fillets 5.Meat Loaf MORE LESS POPCORN MUFFIN BEVERAGE FROZEN PIZZA DINNER PLATE SPEEDY MICROWAVE OVEN KOR-122M COOK Clock/ Auto Defrost Power Auto Start STOP/CLEAR...
  • Page 6 KOR-122M0A FEATURES DIAGRAM (continued) KOR-122M1A STAGE DEFROST AUTO WEIGHT TIME START LOCK CUPS Auto Cook MENU WEIGHT 1.Baked Potato 2.Fresh Vegetable 3.Soup 4.Fish Fillets 5.Meat Loaf MORE LESS POPCORN MUFFIN BEVERAGE FROZEN PIZZA DINNER PLATE SPEEDY MICROWAVE OVEN KOR-122M COOK...
  • Page 7 KOR-122Q0A FEATURES DIAGRAM (continued) KOR-122Q1A STAGE DEFROST AUTO WEIGHT TIME START LOCK CUPS MICROWAVE OVEN KOR-122Q Popcorn Soup More Muffin Beverage Baked Frozen Less Potato Pizza Dinner Fresh Plate Vegetable AUTO DEF. SPEEDY COOK Clock/ Power A.Start STOP/ START CLEAR 10.

  • Page 8: Installation

    INSTALLATION 1. Examine the oven after unpacking. Check fork damage such as a misaligned door, broken door or dent in the cavity. If any damage is visible, DO NOT INSTALL, and notify your dealer immediately. 2. Level, flat location. Install the microwave oven on a level, flat surface. 3.

  • Page 9: Operation Procedure

    OPERATION PROCEDURE This section includes useful information about oven operation. 1. Plug power supply cord into a standard 3-pronged 20 Amp, 120V AC 60Hz power outlet. 2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray and roller guide must always be in place during cooking.

  • Page 10: Controls

    CONTROLS SETTING THE CLOCK When the oven is first plugged in, the display will flash ":0" and a tone will sound. If the AC power ever goes off, the display shows ":0" when the power comes back on. @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ?

  • Page 11: Time Defrosting

    TIME DEFROSTING When TIME DEFROST is selected, the automatic cycle divides the defrosting time into periods of alternating defrost and stand times by cycling on and off. The WEIGHT DEFROST indicator lights and 1. Touch Auto Defrost pad. Auto "0" is displayed. And the lb indicator starts Defrost blinking.

  • Page 12: Cooking In Two Stages

    COOKING IN TWO STAGES For best results, some recipes call for one power level for a certain length of time and another power level for a different length of time. Your microwave oven can be set to change from one to another. 1.

  • Page 13: Weight Defrosting And Cooking In Two Stages

    WEIGHT DEFROSTING AND COOKING IN TWO STAGES 6. Touch Power pad. The STAGE2 indicator lights and "P–" is Power displayed. 7. Touch number pad for desired power level in the The display will show what you touched. second stage. 8. Touch number pads for cooking time in the second The display will show the numbers you stage.

  • Page 14: To Check Auto Start Time

    TO CHECK AUTO START TIME Once you have correctly programmed the oven for AUTO START, the present time will appear on the display. The programmed AUTO START time will Clock/ 1. Touch Clock/A.Start pad. appear on the display for 3 seconds. A.Start SPEEDY COOK SPEEDY COOK allows you to reheat for 30 seconds at 100% (full power) by simply touching the SPEEDY...
  • Page 15 ONE TOUCH COOKING 1. Touch FROZEN PIZZA pad When you touch FROZEN PIZZA pad FROZEN once for a 7 oz pizza or twice once,"7" is displayed. PIZZA for a 10 oz pizza. After 1.5 seconds, the display shows the cooking time and the oven starts cooking. * FROZEN PIZZA * •...
  • Page 16 ONE TOUCH COOKING ; KOR-122Q When you touch Soup pad once, "8" is 1. Touch Soup pad once for a 8oz Soup displayed. After 1.5 seconds, the display soup or twice for a 12oz shows the cooking time and the oven starts cooking.
  • Page 17 AUTO COOK (MENU & WEIGHT) ; KOR-122M Auto cook allows you to cook or reheat many of your favorite foods by repeatedly touching menu pad. After the menu selections, touch chosen pad until number in display is same as desired quantity to cook. When you touch MENU pad once, “AC-1”...

  • Page 18: Child Safety Lock

    CHILD SAFETY LOCK The safety lock prevents unwanted oven operation such as by small children. To set, press and hold STOP/CLEAR for 3 seconds, LOCK indicator lights. To cancel, press and hold STOP/CLEAR for 3 seconds, LOCK indicator goes off. TO STOP THE OVEN WHILE THE OVEN IS OPERATING 1.

  • Page 19: Interlock Mechanism Functions And Adjustments

    INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS The door lock mechanism is a device has been specially designed to completely eliminate microwave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave. (1) Primary interlock switch When the door is closed, the hook locks the oven door.
  • Page 20 (2) Secondary interlock switch and interlock monitor switch When the door is closed, the hook pushes the push lever down ward, and push lever presses the button of the interlock monitor switch to bring it under "off", condition and presses the button of the secondary interlock switch to bring it under "on", condition.

  • Page 21: Measurement Of The Microwave Output Power

    MEASUREMENT OF THE MICROWAVE OUTPUT POWER Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below. 1) Microwave power output measurement is made with the microwave oven supplied at rated voltage and operated at its maximum microwave power setting with a load of 1,000±5cc of potable water.

  • Page 22: Microwave Emission Test

    MICROWAVE EMISSION TEST WARNING Make sure to check the microwave leakage before and after or adjustment. • Always, start measuring of an unknow field to assure. Safety for operating personnel from microwave energy. • Do not place your hands into any suspected microwave radiation field unless the safe density level is known.

  • Page 23: Wiring Diagram

    WIRING DIAGRAM KOR-122M/Q0A (Fig. 2) KOR-122M/Q1A PRIMARY HIGH VOLTAGE INTERLOCK CAVITY TRANSFORMER THERMOSTAT SWITCH(UPPER) POWER SUPPLY SINGLE PHASE ~ ONLY FILTER ASS'Y CONTROL P.W.B. ASS'Y FUSE INTERLOCK H.V. MONITOR RELAY-1 CAPACITOR SWITCH CL GM FM RELAY-2 MAGNETRON SECONDARY H.V. DIODE INTERLOCK SWITCH NOTE : RD : RED OR : ORANGE...

  • Page 24: Circuit Description

    CIRCUIT DESCRIPTION Refer to the "WIRING DIAGRAM" Fig. 2 on page 22. MICROWAVE COOKING TIME COOKING 1. When the food is placed inside the oven and door is closed. 1) The low voltage transformer supplies the necessary voltage to the touch control circuit when the power cord is plugged in.
  • Page 25 OR FA H.V. CAPACITOR H.V. DIODE MAGNETRON WIRING COLOR OR: ORANGE H.V. TRANSFORMER Fig. 3 The touch control circuit controls the ON-OFF time of RELAY "1" in order to vary the output power of the microwave oven from "power level 1" to "HI (100%) power". One complete ON and OFF cycle of the RELAY "1"...
  • Page 26 OUTPUT POWER POWER LEVEL RELAY "1" TURN ON, OFF TIME AGAINST FULL POWER 0/29 (0%) 3/29 (10%) 5/29 (17%) 8/29 (28%) 11/29 (38%) 14/29 (48%) 17/29 (59%) 20/29 (69%) 23/29 (79%) 26/29 (90%) 29/29 (100%) Fig. 4 AUTO DEFROST CYCLE When auto defrost is selected and the desired defrosting time is chosen, the automatic cycle divides the defrosting time into 5 periods of alternating defrost and stand times, by cycling on and off.

  • Page 27: Safety Precautions For Disassembly And Repair

    SAFETY PRECAUTIONS FOR DISASSEMBLY AND REPAIR – Cautions to be observed when troubleshooting. 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.

  • Page 28: Disassembly And Assembly

    DISASSEMBLY AND ASSEMBLY 1. To remove cabinet. Remove three screws (F02). 2. To remove door assembly. 1) Remove two screws (F32) which secure the top hinge stopper (A03). 2) Remove the door assembly (A00) from top plate. 3) Reverse the above for reassembly. 3.
  • Page 29 (1) Remove the gasket door (A06) from door plate (A04). (2) Remove the barrier screen inner (A05) from door plate (A04). (3) Remove the door frame (A01) from door plate (A04). (4) Remove the top hinge stopper (A03) from door plate (A04). (5) Remove the spring (A08) and the hook (A07).
  • Page 30 5. To remove control panel assembly. (1) Disconnect all the lead wires connected to control panel assembly. (2) Remove the screw(F35) holding the control panel assembly. @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @...
  • Page 31 6. To remove high voltage capacitor. (1) Remove the screw (F07) which secure the grounding ring terminal of diode (F08) and capacitor holder (F06). (2) Remove the capacitor holder (F06) with capacitor (F09). (3) Reverse the above steps for reassembly. High voltage circuit wiring MAGNETRON H.V.
  • Page 32 @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ?

  • Page 33: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Following the procedures below to check if the oven is defective or not. 1. Check grounding before checking trouble. 2. Be careful of the high voltage circuit. 3. Discharge the high voltage capacitor. (see page 26) 4. When checking the continuity of switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed.
  • Page 34 ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? @ @ @ @ @ @ @ @ MEMBRANE KEYBOARD CHECK PROCEDURE 1. Check the pad KOR-122M0A/M1A STAGE DEFROST AUTO...
  • Page 35 KOR-122Q0A/Q1A STAGE DEFROST AUTO WEIGHT TIME START LOCK CUPS MICROWAVE OVEN KOR-122Q Popcorn Soup More Muffin Beverage Baked Frozen Less Potato Pizza Dinner Fresh Plate Vegetable AUTO DEF. SPEEDY COOK Clock/ Power A.Start STOP/ START CLEAR PCB Termination PCB Connector Fig.
  • Page 36 2. Type of encoding and pad names. KOR-122M0A/M1A DINNER POWER PLATE POPCORN FROZEN BEVERAGE MUFFIN SPEEDY PIZZA COOK START LESS MORE STOP/ CLOCK/ AUTO WEIGHT MENU CLEAR A.START DEFROST Fig. 8 Key Matrix The membrane keyboard consists of 25 keys whose configurations are described in Fig. 8 and provide 11 pad terminations to be connected to the touch control circuit as Fig.
  • Page 37 KOR-121Q0A/Q1A BAKED DINNER FRESH SOUP POWER POTATO PLATE VEGETABLE POPCORN FROZEN BEVERAGE MUFFIN SPEEDY PIZZA COOK START LESS MORE STOP/ CLOCK/ AUTO CLEAR A.START DEFROST Fig. 8-1 Key Matrix The membrane keyboard consists of 26 keys whose configurations are described in Fig. 8-1 and provide 11 pad terminations to be connected to the touch control circuit as Fig.
  • Page 38 (TROUBLE 3) The oven does not operate at all; Display window does not display any figures and any inputs can not be accepted. Condition Result Cause Remedy Check Check continuity Replace Primary 20A fuse Continuity Malfunction of Interlock Switch Interlock Monitor blows Interlock monitor and Secondary...
  • Page 39 Condition Result Cause Remedy Check Check continuity Outlet has Defective oven Replace of open proper Continuity thermostat thermostat Voltage Fuse does not open Check continuity Open power Replace of power supply Continuity supply cord cord. Defective touch Replace Normal control circuit Malfunction of Display do not Replace...
  • Page 40 Condition Result Cause Remedy Check Turn table motor Check continuity Open winding Replace Continuity fan motor and of primary winding oven lamp turn of high voltage on for a transformer and Defective touch Replace Normal second when touch control control circuit the start pad circuit is tapped...
  • Page 41 (TROUBLE 6) Microwave Output power is low. First of all, check if output power is really low following "measurement of the microwave output power" on page 20. Condition Check Result Cause Remedy Check the power Decrease in Output Lower than Customer source voltage power source...

  • Page 42: Component Test Procedure

    COMPONENT TEST PROCEDURE 1. High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor (see page 26).
  • Page 43 6. Interlock switches • You can test continuity of safety interlock and monitor switch by using ohmmeter. • The switch operation is checked by zero/unlimited. The meter should indicate zero resistance. • The sequence of check is interlock monitor switch, primary and secondary interlock switches check. 1) In case of interlock monitor switch check.

  • Page 44: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. CIRCUIT CHECK PROCEDURE 1) Low Voltage Transformer (DMR-602P) Check. The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 120V Frequency: 60Hz Voltage LOAD NO LOAD Terminal 27VAC 30VAC @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ?
  • Page 45 Measurement Point...
  • Page 46 3) Display problems CAUSE MEASUREMENT RESULT REMEDY Defective Display Refer to "The display Replace P.C.B. trouble shooting data" assembly. below. Display layout (Top View) The display trouble shooting data DISPLAY NAME MICOM OUTPUT TROUBLE & PIN NO. IN PIN NO. STAGE 1, LOCK don't come on.
  • Page 47 CHECK METHOD POINT STAGE RELAY "2" ON RELAY "2" OFF +12V DC (2) When touching "START" pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. * Cause: RELAY "1" does not operate. 1N4002A Q11 KRC106M MGT RY...
  • Page 48 6) When the digital clock does not operate properly 1N148M LVT1 EXINT 5.1V 4.7K POINT WAVEFORM 4.3V T: 20 ms(50Hz) T:16.67ms(60Hz) 16.67ms(60Hz) If clock does not keep exact time, you must check resistor R21, R22 and capacitor C5...

  • Page 49: P.c.b. Circuit Diagram

    2. P. C. B. CIRCUIT DIAGRAM (KOR-122M0A/M1A)
  • Page 50 (KOR-122Q0A/Q1A)

  • Page 51: Component Information

    3. COMPONENT INFORMATION 1) Transistor Emitter Collector Base 2) Diode and Zener Diode DIODE Cathode (K) ANODE (A) D1-D6, D8-D14 D1-D14 ZENER Cathode (K) ZD1, ZD2 ANODE (A) ZD1,ZD2 DIODE 3) Digital Transistor * Internal circuit Q1-Q8 Q11-Q13 Collector BASE Emitter RESISTOR TYPE...

  • Page 52: Printed Circuit Board

    4. PRINTED CIRCUIT BOARD...

  • Page 53: P.c.b. Location No

     Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) 5. P. C. B. LOCATION NO. PART NAME REF NO.

  • Page 54: Exploded And Parts List

     Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) EXPLODED AND PARTS LIST 1.
  • Page 55 In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) 2. Control Panel Assembly CONTROL PANEL ASSEMBLY KOR-122M0A/M1A : PKCPSWLZ00 KOR-122Q0A/Q1A : PKCPSWM900 REF. NO PART CODE...
  • Page 57 PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) *S: Substitutive REF. NO PART CODE PART NAME DESCRIPTION Q'TY REMARK 3511708030 DOOR AS KOR-122M0A PKCPSWLZ00 CONTROL-PANEL AS KOR-122M0A PKCPSWM900 KOR-122Q0A 3510801700 CABINET PCM T0.6 7S312X40A1 SCREW SPECIAL...
  • Page 58 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” FAX: 02) 590-6291 TEL: 02) 360-7114/590-6151~5 http://www.dwe.daewoo.co.kr PRINTED DATE: July 1999...

This manual is also suitable for:

Kor-122q0aKor-122m1aKor-122q1a

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