DAEWOO ELECTRONICS KOG-6C6R5S Service Manual
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DAEWOO ELECTRONICS KOG-6C6R5S Service Manual

DAEWOO ELECTRONICS KOG-6C6R5S Service Manual

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Service Manual
Microwave Oven
Model: KOG-6C6R5S
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. : G6C6R5S001
Jan. 2004

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Summary of Contents for DAEWOO ELECTRONICS KOG-6C6R5S

  • Page 1 S/M No. : G6C6R5S001 Service Manual Microwave Oven Model: KOG-6C6R5S 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 (WXHXD) 465X279X384mm CAVITY DIMENSIONS (WXHXD) 290X220X306mm NET WEIGHT APPROX. 13.7Kg TIMER 60 min. 00 sec. POWER SELECTIONS 5 LEVELS CAVITY VOLUME...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM q 0 9 8 1 Door seal - Door seal maintains the microwave energy 8 Roller guide - This must always be used for cooking within the oven cavity and prevents microwave together with the glass cooking tray. leakage.

  • Page 7: Control Panel

    3. CONTROL PANEL 1 Display - Cooking time, power level, indicators and 5 Clock - Used to set clock. present time are displayed. 6 Start/Express cook - Used to start the oven 2 Auto cook - Used to cook using a program or to operation and also increase the reheat time by 30 reheat.

  • 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 oven 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 troubleshooting. 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 11 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Pull 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 3. To remove door parts. DOOR ASSEMBLY : 3511723730 REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3512206450 FRAME DOOR ABS SG-175 SG-0760D 3517008800 BARRIER-SCREEN *O SAN CR-5381 SMOG 3515204100 STOPPER HINGE *T AS KOR-63150S 3511706120 DOOR PAINTING AS KOR-634R0S 3517002800 BARRIER-SCREEN *I...
  • 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 screw on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten a screw.
  • Page 14 HIPS SG-970 HG-1760H 3516912510 BUTTON FUNCTION-A ABS SG-175 SG-0760D COATING PKBPMSAZ00 PCB BUTTON MANUAL AS KOR-6C6R5S PKMPMSAZ30 PCB MAIN MANUAL AS KOG-6C6R5S 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 7621301011 SCREW TAPPING T2 PAN 3X10 PW MFZN 3516912610 BUTTON FUNCTION-B ABS SG-175 SG-0760D COATING 1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly.
  • 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 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 17 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 18 12. To remove heater parts. REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 7392500008 NUT HEX 6N-2-5 SUS 3515000600 SPACER INSULATOR *I C3771BD 3513301100 INSULATOR HEATER SPP T0.8 3512803400 HEATER 230V 1000W 1R67994001 7002500613 SCREW MACHINE TRS 5X6 MFCR 7002400413 SCREW MACHINE TRS 4X4 MFCR...

  • 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. Condition : DOOR CLOSED Condition : DOOR OPEN (1) Primary interlock switch...

  • Page 20: Troubleshooting Guide

    TROUBLESHOOTING 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 21 Condition Check Result Cause Remedy Outlet has Check continuity of Defective magnetron Replace proper voltage. magnetron Continuity Fuse does not blow. Defective line filter Check continuity of Replace Continuity board noise filter board Open power supply Check continuity of Replace cord Continuity power supply cord...
  • Page 22 (TROUBLE 3) No microwave oscillation even though fan motor rotates. Condition Check Result Cause Remedy Check continuity Continuity Defective high Replace microwave of high voltage voltage oscillation capacitor transformer terminals with wires removed Check continuity of Continuity in Defective high Replace high voltage diode voltage diode...
  • Page 23 (TROUBLE 4) The following visual conditions indicate a probable defective touch control circuit assembly. 1. Incomplete segments (1) Segments missing (2) Partial segments missing (3) Digit flickering other than normal display slight flickering (4) :0 does not display when power is on. 2.

  • Page 24: 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 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 : 230V/Frequency : 50Hz Terminal Voltage LOAD NO LOAD DC 12 V AC 29.5 V NOTE : 1.
  • Page 29 Measure Point...
  • Page 30 3. When there is no microwave oscillation 1) When pressing START button, oven lamp does not turn on. Fan motor does 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

    3. P.C.B. LOCATION NO. NAME SYMBOL PART CODE SPECIFICATION Q'TY REMARK BUZZER 3515600100 BM-20K C ARRAY CN4XB-102M 5P(4) 102 M 50V C CERA C1~3,5~8 CCZF1H104Z 50V HIKF 0.1uF Z C ELECTRO CEXF1C101V 16V RSS 100uF C ELECTRO CEXF1E102V 25V RSS 1000uF CONN WAFER 3519150520 YW396-02V...

  • 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 PART CODE PART NAME DESCRIPTION Q'TY 3511723730 DOOR AS KOG-6C675S PKCPSWAZ30 CONTROL-PANEL AS KOG-6C6R5S 3513302700 INSULATOR HEATER AS KOG-37150S 3510805300 CABINET AS KOR-61150S 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516109500 CAVITY AS KOR-63150S 7S627W50X1 NUT HEX NUT FLANGE M5X0.8P MFZN...
  • Page 35 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : G6C6R5S001 PRINTED DATE: Jan. 2004...

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