Daewoo KOG-3Q47 Service Manual
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Daewoo KOG-3Q47 Service Manual

Daewoo KOG-3Q47 Service Manual

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Service Manual
Microwave Oven
Model: KOG-3Q47
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 CORP.
http : //svc.dwe.co.kr
S/M No. : G6C475S001 ¾
Nov. 2004

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Summary of Contents for Daewoo KOG-3Q47

  • Page 1 S/M No. : G6C475S001 ¾ Service Manual Microwave Oven Model: KOG-3Q47 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 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 POWER SUPPLY 230V/50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1200 W POWER GRILL 1050 W CONSUMPTION COMBINATION 2200 W MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W x H x D) 465 x 279 x 384mm CAVITY DIMENSIONS (W x H x D) 290 x 208 x 306mm NET WEIGHT APPROX.

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION 2. FEATURE DIAGRAM 1 Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2 Cover Heater 3 Heating Element 4 Oven cavity 5 Safety interlock system 6 Knob V.P.C - Used to select a microwave power level. 7 Knob timer - Used in setting cooking time for all functions.

  • Page 6: Installation

    This appliance is supplied with cable of special type, which, if samaged, must be repaired with cable of same type. Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person. 6. Examine the oven after unpacking for any damage such as: A misaligned door, broken door or a dent in cavity.

  • Page 7: Operations And Functions

    OPERATIONS AND FUNCTIONS Connect the mains lead to an electrical outlet. After placing the food in a suitable utensil, open the oven door and put it on the glass tray. Glass tray must always be in place during cooking. Shut the door. Make sure that it is firmly closed.

  • Page 8: 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 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.
  • Page 9 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. To remove door assembly 1) Remove a screws which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavity. 3) Reverse the above for reassembly.
  • Page 10 3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3511614900 DECORATOR DOOR AS KOR-6Q4R5S 3512209000 FRAME DOOR ABS SG-0760D SG-175 3517009100 BARRIER-SCREEN *O SAN CR-5381 SMOG 3515204100 STOPPER HINGE *T AS KOR-63150S 3511719500 DOOR PAINTING AS KOR-6C0B5S 3517002800 BARRIER-SCREEN *I...
  • Page 11 4. Method to reduce the gap between the door seal and the oven front surface. (1) To reduce gap located on part ‘A’ • Loosen the screw on stopper hinge top, and then push the door to contact the door seal to oven front surface.
  • Page 12 5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3513408100 KNOB VPC ABS SG-175 SG-07600 3511614210 DECORATOR C-PANEL STS430 T0.5 3516732320 CONTROL-PANEL ABS SG-175 SG-0760D 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 3512766301 HARNESS TIMER KOG-37150S 3515101600 SPRING FLAT...
  • Page 13 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 14 8. To remove wind guide assembly. 1) Remove a screw for earthing. 2) Remove the noise filter from the wind guide. 3) Remove a screw which secure the wind guide assembly. 4) Draw forward the wind guide assembly. 5) Pull the fan from the motor shaft. 6) Remove two screws which secure the motor shaded pole.
  • Page 15 10. To remove tray motor 1) Remove the coupler in the cavity. 2) Turn the set upside down. 3) Cut the tray motor cover part from the base plate. 4) Remove the tray motor cover. 5) Remove a screw which secure the tray motor. 6) Remove the tray motor.
  • Page 16 12. To remove heater parts HEATER TOP ASSEMBLY : 3512803600 REF NO. PART CODE PART NAME DESCRIPTION Q TY REMARK 3512765100 HARNESS HEATER KOC-970T1S TEFLON 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3510607800 BRACKET HEATER *T SBHG T0.5 3512803700 HEATER MIRACLON 115V AC 500W 3511408100 COVER HEATER *T...

  • 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. (1) Primary interlock switch When the door is closed, the hook locks the oven door.

  • 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 Does the fan motor work when you shut the door and turn the timer? Does the oven lamp light? Replace or repair oven lamp, Does the turntable turn? turntable motor. Normal reading should be approx. 0 If microwave do not Check continuity No Continuity Continuity...

  • Page 20: 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 21: Microwave Radiation Test

    2. MICROWAVE RADIATION TEST WARNING : Make sure to check the microwave leakage before and after repair of adjustment. Always start measuring of an unknown 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. Care should be taken not to place the eyes in direct line with the source of microwave energy.

  • Page 22: 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 23: Wiring Diagram

    WIRING DIAGRAM...

  • Page 24: 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 25 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). PART CODE PART NAME DESCRIPTION Q'TY...

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