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Daewoo KOR-6L9R5S Service Manual

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S/M No. :
Service Manual
Microwave Oven
Model: KOR-6L9R5S
✔
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).
R6L9R5S001
May. 2012

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Summary of Contents for Daewoo KOR-6L9R5S

  • Page 1 R6L9R5S001 S/M No. : Service Manual Microwave Oven Model: KOR-6L9R5S ✔ 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 trained service personnel should make repairs.) (1) A broken door hinge.

  • Page 4: Specifications

    SPECIFICATIONS MODEL KOR-6L9R5S POWER SUPPLY 230V-50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1200W POWER CONSUMPTION GRILL COMBINATION MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 446 X 270 X 346 mm(17.6 X 10.6 X 14.8 in) CAVITY DIMENSIONS (W X H X D) 295 X 219 X 303 mm(11.6 X 8.6 X 11.9in)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Features Diagram

    2. FEATURE DIAGRAM 1 Door latch-When the door is closed it will automatically shut off. If the door is opened while the oven is operating, the magnetron will automatically shut off. 2 Door seal-The door seal surfaces prevent microwaves escaping from the oven cavity. 3 Oven cavity 4 Spatter shield-Protects the microwave outlet from splashes of cooking foods.

  • Page 7: Control Panel

    3. CONTROL PANEL 1 Display - Cooking time, power level and indicators are displayed. 2 Defrost- Used to defrost foods by weight or time. 3 Power- Used to set power level. 4 Timer - Used to set the timer. 5 Auto cook- Used to cook using a program or to reheat. 6 Dial knob- Used to set the time and weight.

  • Page 8: Installation

    • This appliance is supplied with cable of special type, which, if damaged, 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: Operation Procedure

    OPERATION PROCEDURE 1) Connect the mains lead to an electrical outlet. 2) Open the oven door once to use the oven. The display lights up and the oven is ready to work. 3) 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.

  • 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 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 four screws on cabinet back. 2) Pull 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. DOOR ASSEMBLY : 3511730360 REF No. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3512212900 FRAME DOOR ABS SG-0760D SG-175 3517013200 BARRIER-SCREEN *O PMMA T1.5 3515204120 STOPPER HINGE *T AS KOR-6L0B1A 3511706130 DOOR PAINTING AS KOR-6L0B1A 3517003700 BARRIER-SCREEN *I PE T0.1...
  • 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 stop- per hinge top, and then push the door to contact the door seal to oven front surface.
  • Page 14 PMMA T1.5 3516743300 CONTROL PANEL ABS SG-0760D SG-175 3516922270 BUTTON FUNCTION-A ABS SG-0760D SG-175 COAT PKMPMSFM80 PCB MAIN MANUAL AS KOR-6L9R5S 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 7621301011 SCREW TAPPING T2 PAN 3X10 PW MFZN 3516909840 BUTTON FUNCTION-B ABS SG-0760D SG-175 COAT...
  • Page 15 6. To remove high voltage capacitor. 1) Remove the screw which secures the earthing 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. ◆...
  • Page 16 8. To remove wind guide assembly. 1) Remove the screw for earthing. 2) Remove the noise filter from the wind guide. 3) Remove the screw which secures 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: 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 switch...

  • Page 18: Troubleshooting Guide

    TROUBLESHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1. Check earthing 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 Replace Defective mag- Outlet has Check continuity of magnetron Continuity netron proper volt- age Fuse does not Replace Defective mag- blow. Check continuity of Continuity netron noise filter board Replace Check continuity of Open power sup- Continuity power supply cord ply cord...
  • Page 20 (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 21 (TROUBLE 4) The following visual problems are caused by a defective control circuit. 1. Incomplete segments, 1) Segments missing. 2) Partial segments missing. 3) Digit flickering other than normal display slight flickering. 2. No display changes when pressing a certain button. 3.
  • Page 22 (TROUBLE 5) When opening the oven door for using the oven, the dipslay doesn't light up and no beep. CONDITION CHECK RESULT CAUSE REMEDY Disconnected Check the power cord is Connect it to The power cord is connected to an outlet. an outlet.

  • 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 12.6 V AC 13.6 V AC NOTE 1.
  • Page 28 • PCB MAIN measurement point...
  • Page 29 • PCB SUB...
  • Page 30 3. When pressing START button, the magnetron does not work. The oven lamp does not turn on and Fan moter does not rotate, but cooking time is counting down. • Cause : There is something wrong with RELAY 3. Refer to circuit diagram (point 3). POINT STATE RELAY 3 ON...

  • Page 31: Pcb Circuit Diagram

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

  • Page 32: Location No

    3. P.C.B. LOCATION NO NAME SYMBOL SPECIFICATION PART CODE Q'TY REMARK BUZZER BM-20K (BUJEON) 3515600100 C ARRAY 5P(4) 1000PF M 50V 2.54MM CN4XB-102M C CERA C1,4 50V B 1000PF K (AXIAL) CCZB1H102K C CERA C2,3,5~7 HIKF 50V 0.1MF Z AXIAL CCZF1H104Z C ELECTRO 16V RSS 100MF (6.3X11) TP...

  • 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 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 REMARK 3511730360 DOOR AS KOR-6L9R5S PKCPSWZZZ7 C-PANEL AS KOR-6L9R5S 3510808410 CABINET AS KOR-6L0B1A 3516117410 CAVITY AS KOR-6L0B1A...
  • Page 35 DAEWOO ELECTRONICS CORP. 1-2, Jeo-dong 1(il)-ga, Jung-gu, Seoul, Korea C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : PRINTED DATE: May. 2012...
  • Page 36 ABOUT THIS MANUAL ABOUT THIS MANUAL...

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