DAEWOO ELECTRONICS KOR-63QA0S Service Manual
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DAEWOO ELECTRONICS KOR-63QA0S Service Manual

DAEWOO ELECTRONICS KOR-63QA0S Service Manual

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Service Manual
Microwave Oven
Model: KOR-63QA0S
 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.
http : //svc.dwe.co.kr
S/M No. : R63QA0S001
Aug. 2002

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Summary of Contents for DAEWOO ELECTRONICS KOR-63QA0S

  • Page 1 : 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. http : //svc.dwe.co.kr Aug. 2002...

  • 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 micro- wave source, and make repairs as 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 1. FOR SAFE OPERATION Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may cause serious bodily injury to the operator. IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE. (Only a trained service personnel should make repairs.) (1) A broken door hinge.

  • Page 4: Specifications

    SPECIFICATIONS MODEL KOR-63QA0S POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1,200W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz FREQUENCY RANGE 87.5Mhz ~ 108Mhz FM RADIO SPEAKER 4ohm, 0.5W OUTSIDE DIMENSIONS (W x H x D) 465 x 279 x 375 mm (18.3 x 11.0 x 14.2 in)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1 SAFETY INTERLOCK SYSTEM 2 DOOR SCREEN Allows viewing of food. The screen is transparent to light, but prevents microwaves escaping. 3 DOOR LATCH When the door is closed, it will automatically shut off. If the door is opened while the oven operating, the magnetron tube will immediately stop operating.

  • Page 7: Control Panel

    3. CONTROL PANEL KOR-63QA DEF. LOCK PRESET g DEFROST/MW RADIO START/EASY COOK AUTO COOK CLOCK STOP/CLEAR AUTO COOK MENU 1. Dinner Plate Time/Weight Quantity 2. Soup 3. Beverage 4. Fresh Vegetable 100 104 POWER TUNE 1 DISPLAY 9 DIAL KNOB Cooking time, power level, indicators and present time Used to set the time and weight.

  • Page 8: Installation

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

  • Page 9: 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 10: 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. You are asked to observe the following precautions carefully.
  • Page 11 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. To remove door assembly 1) Remove a screw which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavity. 3) Reverse the above for reassembly.
  • Page 12  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. To remove door parts. REF NO.
  • Page 13 4. Method to reduce the gap between the door seal and the oven front surface. (1) To reduce gap located on part ‘A’ Loosen a screws on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten two screws.
  • Page 14 ABS SG-175 SG-0760D SPRAY 3510019510 ASSY SPEAKER 57MM 4ohm 0.5W 3513403870 KNOB VOLUME ABS SG-175 SG-0760D SPRAY PKBPMSE600 PCB BUTTON MANUAL AS KOR-63QA0S 7621301011 SCREW TAPPING T2 PAN 3X10 MFZN PKMPMSE600 PCB MAIN MANUAL AS KOR-63QA0S 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN...
  • Page 15 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. High voltage circuit wiring 7.
  • Page 16 Metallic Magnetron gasket antenna plate Cooling fin Filament terminal 8. To remove wind guide assembly. 1) Remove a screw for earthing. 2) Remove a screw which secure the wind guide assembly. 3) Draw forward the wind guide assembly. 4) Pull the fan from the motor shaft. 5) Remove two screws which secure the motor shaded pole.

  • Page 17: 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. PRIMARY INTERLOCK FRONT-PLATE SWITCH...

  • Page 18: 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 transformer, disconnect one lead wire from these parts and check continuity with the AC plug removed.
  • Page 19 CONDITION CHECK RESULT CAUSE REMEDY Defective Outlet has Check continuity of Replace continuity magnetron. proper volt- magnetron fuse does not blow. Defective line Check continuity of noise filter Replace continuity filter board board Open power Check continuity of Replace continuity supply cord power supply cord Defective touch...
  • Page 20 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY No Continuity Check continuity of high microwave voltage fuse oscillation Continuity Replace Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed former Continuity in Replace...
  • Page 21 (TROUBLE 4) The following visual conditions indicate a probable defective touch control circuit 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 22 (TROUBLE 5) Press RADIO button, but RADIO function does not work. CONDITION CHECK RESULT CAUSE REMEDY 0Ω or infinite Replace Check continuity of primary RADIO func- Defective low volt- winding of low voltage trans- tion does not age transformer former Approx.

  • Page 23: Measurement And Test

    MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT 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. 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 1000±5cc of potable water.

  • Page 24: 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 25: 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 26: Wiring Diagram

    WIRING DIAGRAM...

  • Page 27: 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 : 230V/Frequency : 50Hz Terminal Voltage LOAD NO LOAD AC 12.6 V AC 14.7 V NOTE : 1.
  • Page 28 Measure Point...
  • Page 30 3. When there is no microwave oscillation 1) When pressing START button, 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. PCB 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) PART CODE PART NAME DESCRIPTION Q'TY 3511715250 DOOR AS KOR-63QA0S PKCPSWE600 CONTROL PANEL AS KOR-63QA0S 3510805300 CABINET AS KOR-61150S 7112401011...
  • Page 35 PART CODE PART NAME DESCRIPTION Q'TY 3511406200 COVER WAVE GUIDE HEATPROOF PP 3517400620 COUPLER XAREC 3514700710 ROLLER TEFLON 3512517300 GUIDE ROLLER PP 5113MF6 A353B 3517203600 TRAY GLASS 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 3518570400 SWITCH S/A RELAY DWSR-1...
  • Page 36 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : R63QA0S001 PRINTED DATE: Aug, 2002...

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