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Daewoo KOR664BWTAE013AB00 Service Manual

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Service Manual

Microwave Oven

Model: KOR664BWTAE013AB00
✔
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://webportal.dwe.co.kr/sic).
Daewoo Electronics Co.,Ltd.
S/M No. : KOR6641800
Apr. 2018

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Summary of Contents for Daewoo KOR664BWTAE013AB00

  • Page 1: Microwave Oven

    S/M No. : KOR6641800 Service Manual Microwave Oven Model: KOR664BWTAE013AB00 ✔ 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://webportal.dwe.co.kr/sic).

  • 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: Proper Use And Service Precautions

    PROPER USE AND SERVICE PRECAUTIONS CAUTION This device is to be Serviced only by Properly Qualified Service Personel. Consult the Service Manual for Proper Service Procedures to Assure Continued Safety Operation and for Precautions to be Taken to Avoid Possible Exposure to Excessive Microwave Energy. 1.

  • Page 4: Specifications

    SPECIFICATIONS POWER SUPPLY 120V AC, 60Hz SINGLE PHASE WITH GROUNDING INPUT POWER 1150 W MICROWAVE ENERGY OUTPUT 700 W FREQUENCY 2,450MHz OUTSIDE DIMENSIONS (W x H x D) 449 X 259 X 318 mm CAVITY DIMENSIONS (W x H x D) 307 X 210 X 304 mm CAVITY VOLUME 0.7 cu.ft...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Features Diagram

    2. FEATURES 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 Control panel 5 Door open button - To open the door push the door open button.

  • Page 7: Control Panel

    3. CONTROL PANEL 1 DISPLAY - Cooking time, power level, indicators and current time are displayed. 2 AUTO COOK - Used to cook some kind of popular food easily and automatically. 3 POWER - Used to set power level. 4 TIME SET PAD - Used to set the cooking time and the current time. 5 DEFROST - Used to defrost foods for weight and time.

  • 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: Operations And Functions

    OPERATIONS AND FUNCTIONS 1. Connect the mains 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 four screws on cabinet back. 2) Pull the cabinet backward. 2. To remove door assembly 1) Remove the 'STOPPER DOOR' from the door assembly. 2) Open the door assembly at a right angle. 3) Reverse the above for reassembly. NOTE : After replacing the door assembly, perform a check of correct alignment with the hinge and cavity front plate.
  • Page 12 3. To remove door parts. PART CODE PART NAME PART DESC. Q'TY 35117-0046000-00 DOOR SUB AS KOR664B SUS(BLACK) 3517011010 BARRIER-SCREEN *O TEMP GLASS T3.2 35117-0043700-00 DOOR PAINTING AS KOR660B BLACK 35170-0021000-00 BARRIER-SCREEN *I PETP T0.1 KOR660B 35123-0002600-00 GASKET DOOR PP J-640A, BLACK, KOR660B POM F20-03 BLACK KOR4A07 35131-0001001-00 HOOK...
  • Page 13 4. To remove control panel parts. PART CODE PART NAME PART DESC. Q'TY 65192-0028300-00 SWITCH MEMBRANE KOR664BWTAE013AB00 PET BLACK 35167-0111000-00 CONTROL-PANEL SUB AS KOR664B SUS(BLACK) 35137-0002600-00 LEVER DOOR OPEN PP 5113MF6, KOR660B 40303-0113400-00 MWO PCB MAIN ASSY KOR661BWBAE023AB00 7122401211 SCREW TAPPING...
  • Page 14 5. To remove high voltage capacitor. 1) Remove the 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. ◆...
  • Page 15 7. To remove wind guide assembly. 1) Remove the screw for grounding. 2) Remove the noise filter from the wind guide. 3) Remove the 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 16: 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. HOOK PRIMARY INTERLOCK...

  • Page 17: 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 18 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective Outlet has Check continuity of magnetron Continuity magnetron proper voltage Fuse does not blow. Replace Check continuity of Open power supply cord power supply cord Continuity Normal Replace Defective touch control circuit Replace Malfunction of Display do not shown secondary...
  • Page 19 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Continuity Replace Check continuity of high Defective high microwave voltage capacitor terminals voltage oscillation transformer with wires removed Replace Check continuity of high voltage Continuity in Defective high rectifier in forward and backward backward...
  • Page 20 (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 21: 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. A cylindrical container of borosilicate glass is used for the test. It has a maximum thickness of 3mm, an external diameter of approximately 190mm and a height of approximately 90mm.

  • Page 22: 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 23: 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 24: Wiring Diagram

    WIRING DIAGRAM...

  • Page 25: 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: 120V / Frequency: 60Hz Terminal Voltage LOAD NO LOAD (4,5)-6 or (7,8)-6 DC 11V AC 30V NOTE 1.
  • Page 26 Measure Point...
  • Page 27 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. -Check method POINT STATE RELAY 2 ON 5VDC RELAY 2 OFF 11VDC 2) When touching START pad, oven lamp turns on.

  • Page 28: Pcb Circuit Diagram

    2. PCB CIRCUIT DIAGRAM...

  • Page 29: Pcb Location No

    3. PCB LOCATION NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY BUZZER BM-20K 3515600100 CAPACITOR CERAMIC C1,2,3,8,9 50V 0.1UF Z AXIAL CCZF1H104Z CAPACITOR CERAMIC C4,5,6,7 50V 1000PF Z AXIAL CCZB1H102K CAPACITOR ELECTRO 50V RS 10UF(5X11) CEXE1H100A CAPACITOR ELECTRO 50V RSS 220UF(10X16) CEXF1H221V CAPACITOR ELECTRO 25V RSS 1000UF(13X20)

  • Page 30: 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 31 PART CODE PART NAME PART DESC. Q'TY REMARK SVC 35117-0045900-00 DOOR AS KOR664B SUS(BLACK) BLACK(P) 35167-0110900-00 CONTROL-PANEL AS KOR664BWTAE013AB00 Kenmore 35108-0013801-00 CABINET AS KOR660B, BLACK 7S312X40A1 SCREW SPECIAL T1 TRS 4X10 SE MFZN 35161-0024100-00 CAVITY AS KOR660B WHITE 3518902600 THERMOSTAT...
  • Page 32 Daewoo Electronics Co.,Ltd. 559, Yonga-ro, Gwangsan-gu, Gwangju, Korea S/M NO. : KOR6641800 PRINTED DATE: Apr. 2018...

  • Page 33: About This Manual

    ABOUT THIS MANUAL (주) 신광씨링 광주광역시 서구 하남대로 502번길 14 담 당 김지수 님 KOR664BWTAE013AB00 M O D E L Kenmore (S/M) 접 수 2018.03.29 M E M O 총 32p (A4) 18.03.29-13p (표지, 표지뒤, 3p, 4p, 6p, 7p, 11p, 12p, 14p, 21p, 22p, 29p, 30p) 총...

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