Daewoo KOG-6CDB5S Service Manual
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Daewoo KOG-6CDB5S Service Manual

Daewoo KOG-6CDB5S Service Manual

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S/M No. : OG6CDB3001
Service Manual
Microwave Oven
Model: KOG-6CDB3S
KOG-6CDB5S
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.
June. 2006

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Summary of Contents for Daewoo KOG-6CDB5S

  • Page 1 S/M No. : OG6CDB3001 Service Manual Microwave Oven Model: KOG-6CDB3S KOG-6CDB5S 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.

  • 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 KOG-6CDB3S / KOG-6CDB5S POWER SUPPLY 230V-50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1000W / 1200W POWER CONSUMPTION GRILL 1050W COMBINATION 2100W / 2200W MICROWAVE ENERGY OUTPUT 700W / 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1 Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2 Reflector (Insulator Heater) 3 Heating Element 4 Oven cavity 5 Safety interlock system 6 Door release button - By pushing this button the latch system cut off all circuits and stops the oven before the door is opened.

  • Page 7: Control Panel

    3. CONTROL PANEL 1 Display - Cooking time, power level, indicators and the current time are displayed. 2 Auto Cook - Used to cook or reheat many favorite food. 3 One Touch Cook - Used to cook or reheat specific quantities of food. 4 Up - Used to increase time to cooking.

  • Page 8: 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 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 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 12 3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3512208540 FRAME DOOR ABS SG-0760D SG-175 3517007300 BARRIER-SCREEN *O PET T0.125 3515204100 STOPPER HINGE *T AS KOR-63150S 3511719600 DOOR WELD AS KOR-6C0B5S 3517002800 BARRIER SCREEN *I POLYESTER TO.1 3512300210 GASKET DOOR...
  • 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 the screw on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten a screw.
  • Page 14 5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3518524540 SWITCH MEMBRANE KOG-6CDB3S 3516733340 CPNTROL-PANEL HIPS PKMPMSS100 PCB ASSY. KOG-6CDB3S 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3513702700 LEVER DOOR OPEN 3516915210 BUTTON DOOR OPEN HIPS 441G430171 SPRING BUTTON...
  • 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 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 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. (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 transformer, disconnect one lead wire from these parts and check continuity with the AC plug removed.
  • Page 21 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective mag- Outlet has Check continuity of magnetron Continuity netron proper volt- age Fuse does not Replace Check continuity of Defective mag- blow. Continuity netron noise filter board Replace Open power sup- Check continuity of Continuity ply cord power supply cord...
  • Page 22 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Continuity microwave Check continuity of high oscillation voltage fuse Replace high voltage fuse Continuity Replace Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed former Continuity in...
  • 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 AC 12.6 V AC 14.7 V NOTE : 1.
  • Page 29 Measure 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. PCB CIRCUIT DIAGRAM...

  • Page 32: Location No

    3. P.C.B. LOCATION NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY BUZZER BM-20K 3515600100 C ARRAY 7P(6) 1000PF M 50V CN6XB-102M CAPACITOR ELEC 50V RS 10UF CEXE1H100A CAPACITOR ELEC 25V RSS 1000MF CEXF1E102V CONNECTOR WAFER YW396-02V 3519150520 CONNECTOR WAFER FCZ 254-11 441M367160 CONNECTOR WAFER YW396-05AV...

  • 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 MOTOR SHADED POLE 230V 20W MW10CA-M02 3512517000 GUIDE WIND 3511800300 PP+30% GLASS 3518003700 2M218JFL (KOG-6CDB3S) MAGNETRON 3518002400 2M218J(F) (KOG-6CDB5S) 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 3513003200 HOLDER HV CAPACITOR SECC T0.6...
  • Page 35 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...
  • Page 36 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. : PRINTED DATE: June. 2006...

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Kog-6cdb3s

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