Daewoo KOR-1A1G0A Service Manual
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Daewoo KOR-1A1G0A Service Manual

Daewoo KOR-1A1G0A Service Manual

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S/M No. : R1A1G0A002_2
Service Manual

Microwave Oven

Model: KOR-1A1G0A
KOR-1A1H0A
KOR-1A0A0A
• 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).
Jan. 2003

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Summary of Contents for Daewoo KOR-1A1G0A

  • Page 1: Microwave Oven

    S/M No. : R1A1G0A002_2 Service Manual Microwave Oven Model: KOR-1A1G0A KOR-1A1H0A KOR-1A0A0A • 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: Table Of Contents

    PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs if necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing surfaces (arcing, wear, and other damage), (4) Damage to or loosening of hinges and latches (5) Evidence of dropping or abuse.

  • Page 3: Safety And Precautions

    SAFETY AND PRECAUTIONS CAUTION : This Device is to be Serviced Only by Properly Qualified Service Personnel. Consult the Service Manual for Proper Service Procedures to Assure Continued Safety Operation and for Precautions to be Taken to Avoid Possible Exposure to Excessive Microwave Energy. 1.

  • Page 4: Specifications

    SPECIFICATIONS MODEL KOR-1A1G and KOR-1A1H, KOR-1A0A POWER SUPPLY 120V~60HZ, SINGLE PHASE WITH GROUNDING MICROWAVE 1400 W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 539X300X406mm (21.2X11.8X16.0 in.) CAVITY DIMENSIONS (W X H X D) 354X228X370mm (13.9X9.0X14.6 in.) NET WEIGHT APPROX.

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION - KOR-1A1G, KOR-1A1H TIMER LOCK lb POPCORN 1.Bread 2.Soup MORE 3.Baked Potato FROZEN 4.Fresh Vegetable PIZZA 5.Frozen Vegetable LESS AUTO DINNER COOK PLATE AUTO DEFROST MEAT POULTRY FISH 1 2 3 POWER 4 5 6 7 8 9 DEFROST KITCHEN...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM TIMER LOCK lb 1.Bread POPCORN 2.Soup 3.Baked Potato MORE FROZEN 4.Fresh Vegetable 5.Frozen Vegetable PIZZA LESS AUTO DINNER COOK PLATE AUTO DEFROST MEAT POULTRY FISH 1 2 3 POWER 4 5 6 7 8 9 DEFROST KITCHEN CLOCK TIMER START/...

  • Page 7: Control Panel

    3. CONTROL PANEL - KOR-1A1G0A TIMER LOCK 1.Bread POPCORN 2.Soup 3.Baked Potato MORE 4.Fresh Vegetable FROZEN 5.Frozen Vegetable PIZZA LESS AUTO DINNER COOK PLATE AUTO DEFROST MEAT POULTRY FISH 1 2 3 POWER 4 5 6 7 8 9 DEFROST...
  • Page 8 - KOR-1A1H0A TIMER LOCK BEVERAGE POPCORN MORE FRESH FROZEN VEGETABLE PIZZA LESS FROZEN DINNER VEGETABLE PLATE AUTO DEFROST MEAT POULTRY FISH 1 2 3 POWER 4 5 6 7 8 9 DEFROST KITCHEN CLOCK TIMER START/ STOP/CLEAR SPEEDY COOK 1. Time set pad - Used to set the cooking time and the present time. 2.
  • Page 9 - KOR-1A0A0A TIMER LOCK lb 1. Bread FROZEN 2. Soup POPCORN 3. Bread Potato PIZZZA 4. Fresh Vegetable 5. Frozen vegetable DINNER BEVERAGE AUTO PLATE COOK MORE LESS POWER DEFROST AUTO DEFROST MEAT POULTRY FISH KITCHEN CLOCK TIMER START/ STOP/CLEAR SPEEDY COOK 1.

  • Page 10: Installation

    INSTALLATION 1. Steady, flat location. This microwave oven should be set on a steady, flat surface. 2. Leave space behind and side. All air vents should be kept a clearance. If all vents are covered during operation, the oven may be overheated and, eventually, cause oven failure.

  • Page 11: Operations And Functions

    OPERATIONS AND FUNCTIONS 1. Connect the main lead to an electrical outlet. 2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray must always be in place during cooking. 3.

  • Page 12: Disassembly And Assembly

    DISASSEMBLY AND ASSEMBLY - Cautions to be observed when trouble shooting. Unlike many other appliances, the microwave oven is high-voltage, high-current equipment. It is completely safe during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit.
  • Page 13 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. To remove door assembly 1) Remove two screws which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavity. 3) Reverse the above for reassembly.
  • Page 14 ABS XR-401, H-2938 KOR-1A1G/H 3512204330 FRAME DOOR ABS XR-401, H-2938 KOR-1A0A 3515202900 STOPPER HINGE *T AS KOR-121M0A 3511711300 DOOR PAINTING AS KOR-1A1G0A 3517005800 BARRIER-SCREEN*I PETP T0.1 3512301900 GASKET DOOR 3513100700 HOOK 3515101300 SPRING HOOK (1) Remove the gasket door from door plate.
  • Page 15 4. Method to reduce the gap between the door seal and the oven front surface. (1) To reduce gap located on part ‘A’. • Loosen two screws on stopper hinge top, and then push the door to contact the door seal to oven front surface. •...
  • Page 16 PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) 5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3518522100 SWITCH MEMBRANE KOR-1A1G0A 3518522110 SWITCH MEMBRANE KOR-1A1H0A 3518522150 SWITCH MEMBRANE KOR-1A0A0A 3516722300 CONTROL PANEL ABS AF-345, HFA-700HT...
  • Page 17 6. To remove high voltage capacitor. 1) Remove a screw which secure the grounding ring terminal of the H.V. diode and the capacitor holder. 2) Remove the H.V. diode from the capacitor holder. 3) Reverse the above steps for reassembly. N High voltage circuit wiring 7.
  • Page 18 8. To remove wind guide assembly. 1) Remove a screw which secure the wind guide assembly. 2) Draw forward the wind guide assembly. 3) Pull the fan from the motor shaft. 4) Remove two screws which secure the motor shaded pole. 5) Remove the motor shaded pole.

  • Page 19: Interlock Mechanism And Adjustment

    INTERLOCK MECHANISM AND ADJUSTMENT The door lock mechanism is a device which 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: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check grounding before trouble checking. 2) Be careful of the high voltage circuit. 3) Discharge the high voltage capacitor. 4) When checking the continuity of the switches, fuse or high voltage tranformer, disconnect one load wire from these parts and check continuity with the AC plug removed.
  • Page 21 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective Outlet has Check continuity of magnetron Continuity magnetron proper voltage Fuse does not Replace blow. Open power Check continuity of Continuity supply cord power supply cord Replace Normal Defective touch control circuit Replace Display do not shown Malfunction of countdown...
  • Page 22 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Continuity Replace Check continuity of high Defective high microwave voltage capacitor terminals voltage oscillation with wires removed transformer Continuity in Replace Check continuity of high voltage Defective high backward rectifier in forward and backward...
  • Page 23 (TROUBLE 4) The following visual conditions inditions indicate a probable defective touch control circuit or membrane switch assembly 1. Incomplete segments, 1) Segments missing. 2) Partical segments missing. 3) Digit flickering other than normal display slight flickering. 4) " :0" does not display when power is on. 2.

  • Page 24: Mesurement And Test

    MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT Microwave output power can be checked by indirectly mmeasuring the temperature rise of a certain amount of water exposed to the microwave as directed below. PROCEDURE 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 100 ±...

  • Page 25: Microwave Radiation Test

    2. MICROWAVE RADIATION TEST CAUTION 1. Make sure to check the microwave leakage before and after repair of adjustment. 2. Always start measuring of an unknown field to assure safety for operating personnel from microwave energy. 3. Do not place your hands into any suspected microwave radiation field unless the safe density level is known. 4.

  • Page 26: Component Test Procedure

    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.

  • Page 27: Wiring Diagram

    WIRING DIAGRAM...

  • Page 28: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. CIRCUIT CHECK PROCEDURE 1. Low voltage transformer check The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 120V / Frequency: 60Hz Terminal Voltage LOAD NO LOAD AC 12.6 V AC 14.7 V NOTE 1.
  • Page 29 Mesurement point...
  • Page 30 3. When there is no microwave oscillation 1) When touching START pad, oven lamp does not turn on. Fan motor do not rotate, but cook indicator in display comes on. ✻ Cause : RELAY 2 does not operate. ¡ refer to Circuit Diagram (point 3) - Check method POINT STATE...

  • Page 31: Pcb Circuit Diagram

    2. P.C.B. CIRCUIT DIAGRAM...

  • Page 32: 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) 3. P.C.B. LOCATION NO. NAME SYMBOL SPECIFICATION...

  • Page 33: Exploded View And Parts List

    EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3. TOTAL ASSEMBLY...
  • Page 34 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) REF NO PART CODE PART NAME DESCRIPTION Q'TY 3511711200 DOOR AS KOR-1A1G0A 3511711230 DOOR AS KOR-1A0A0A PKCPSWXN00 CONTROL PANEL AS KOR-1A1G0A PKCPSWXP00 CONTRON PANEL AS...
  • Page 35  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) REF NO PART CODE PART NAME DESCRIPTION...
  • Page 36 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” PRINTED DATE: Jan. 2003...

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