Daewoo KOR-63ND5S Service Manual
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Daewoo KOR-63ND5S Service Manual

Daewoo KOR-63ND5S Service Manual

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Service Manual
Microwave Oven
Model: KOR-63ND5S
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. : R63ND5S001
Sep. 2003

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Summary of Contents for Daewoo KOR-63ND5S

  • Page 1 S/M No. : R63ND5S001 Service Manual Microwave Oven Model: KOR-63ND5S 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 MODEL KOR-63ND5S POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH EARTHING POWER CONSUMPTION MICROWAVE 1,200 W MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz FM RADIO FREQUENCY RANGE 87.5MHz~108MHz SPEAKER 4ohm, 0.5W OUTSIDE DIMENSIONS (W X H X D) 465 x 279 x 360 mm (18.3 x 11.0 x 14.2 in) CAVITY DIMENSIONS (W X H X D) 290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in.)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1 DOOR SEAL 5 OVEN LAMP Door seal maintains the microwave within the oven Automatically turns on during oven operating. cavity and prevents microwave leakage. 6 SAFETY INTERLOCK SYSTEM 2 DOOR HOOK 7 CONTROL PANEL When the door is closed, it will automatically lock shut. 8 GLASS COOKING TRAY If door is opened while oven is operating, magnetron Made of special heat resistant glass.

  • Page 7: Control Panel

    3. CONTROL PANEL 1 DISPLAY – Cooking time, power level, indicators and 8 AUTO COOK – Used to cook using a program or to present time are displayed. reheat. 2 DEFROST / M/W – Used to set power level and to 9 START/EASY COOK –...

  • 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 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) Push the cabinet backward. 2. To remove door assembly 1) Remove one 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 Caution : In this Service 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). 3.
  • Page 13 (1) Remove the gasket door from door weld as. (2) Remove the barrier screen inner from weld as. (3) Remove the door frame from door weld as. (4) Remove the stopper hinge top from door weld as. (5) Remove the spring and the hook. (6) Remove the barrier screen outer from door frame.
  • Page 14 SAN CR-5381 SMOG 3516912010 BUTTON RADIO ABS SG-175 SG-0760D COATING 3516912110 BUTTON FUNCTION ABS SG-175 SG-0760D COATING PKBPMSAU00 PCB BUTTON MANUAL AS KOR-63ND5S 3513403890 KNOB VOLUME ABS SG-175 SG-0760D COATING 7621301011 SCREW TAPPING T2 PAN 3X10 PW MFZN PKMPMSAU00 PCB MAIN MANUAL AS...
  • 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: 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 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 20 (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 rectifi- voltage rectifier...
  • Page 21 (TROUBLE 4) The following visual conditions indicate a probable defective touch control circuit assembly. 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 22 (TROUBLE 5) Press RADIO button, but RADIO function does not work. Condition Check Result Cause Remedy 0Ω or infinite RADIO Check continuity of Defective low Replace function primary winding of low voltage does not voltage transformer transformer work Approx. 490Ω (normal) Check D.C.

  • 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 6-7-8 DC 14 V AC 32 V NOTE : 1.
  • Page 28 Measure Point...
  • 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 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

    Caution : In this Service 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). 3.

  • 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). PART CODE PART NAME DESCRIPTION Q'TY 3511715260 DOOR AS KOR-63NR5S 3516726790 CONTROL-PANEL AS KOR-63ND5S 3510805300 CABINET AS KOR-61150S 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516109500 CAVITY AS KOR-63150S 7122401211...
  • 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” PRINTED DATE: Sep. 2003 S/M No. : R63ND5S001...

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