Daewoo KOR-639R0S Service Manual
  1. Manuals
  2. Brands
  3. Daewoo Manuals
  4. Microwave Oven
  5. KOR-639R0S
  6. Service manual
Daewoo KOR-639R0S Service Manual

Daewoo KOR-639R0S Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Service Manual
Microwave Oven
Model: KOR-639R0S
 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 CO., LTD.
http : //svc.dwe.co.kr
S/M No. : R639R0S001
Jan. 2002

Advertisement

Table of Contents
loading

Related Manuals for Daewoo KOR-639R0S

Summary of Contents for Daewoo KOR-639R0S

  • Page 1 : 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 CO., LTD. http : //svc.dwe.co.kr Jan. 2002...

  • 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-639R POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING MICROWAVE 1200W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 465 x 279 x 375 mm (18.3 x 11.0 x 14.8 in) CAVITY DIMENSIONS (W X H X D) 290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in) NET WEIGHT...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION 2. FEATURE DIAGRAM KOR-639R0S Defrost Power Clock Auto cook 1. Dinner Plate 2. Soup 3. Bevar age 4. Fresh Vegetable M/W DEF. LOCK Stop/Clear Start/Easy cook SEFETY INTERLOCK SYSTEM DOOR SCREEN - Allows viewing of food. The screen is designed so that light can pass through, but not the microwave.

  • Page 6: Control Panel

    3. CONTROL PANEL KOR-639R0S Defrost Power Clock Auto cook 1. Dinner Plate 2. Soup 3. Beverage 4. Fresh Vegetable M/W DEF. LOCK Stop/Clear Start/Easy cook 1 Auto cook - Used to cook using a program or to reheat. 2 Defrost - Used to defrost foods by weight or time.

  • Page 7: 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 8: 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 9: 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 10 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. To remove door assembly 1) Remove the screw which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavity. 3) Reverse the above for reassembly.
  • Page 11  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. To remove door parts. REF.
  • Page 12 (1) Remove the gasket door from door weld as. (2) Remove the barrier screen inner from door 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 13  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) 5. To remove control panel parts. REF NO.
  • Page 14 1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove screws which secure the PCB assembly. 3) Disconnect WIRE FLAT from the connector of the PCB assembly. 4) Detach the function buttons and knob from the control panel.
  • Page 15 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 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.

  • Page 17: Trouble Shooting Guide

    TROUBLE SHOOTING 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 tranformer, disconnect one load wire from these parts and check continuity with the AC plug removed.
  • Page 18 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective mag- Outlet has Check continuity of magnetron Continuity netron proper volt- age Fuse does not Replace blow. Check continuity of Defective line Continuity filter board noise filter board Replace Open power sup- Check continuity of Continuity power supply cord ply cord...
  • Page 19 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Check continuity of high microwave Continuity voltage fuse oscillation Replace high voltage fuse Continuity Replace Check continuity if high Defective high voltage capacitor terminals voltage trans- with wires removed former Continuity in...
  • Page 20 (TROUBLE 4) The following visual conditions indicate a probable defective 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. 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 ±...

  • 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: 230V / Frequency: 50Hz Terminal Voltage LOAD NO LOAD 12.6 V AC 13.6 V AC NOTE 1.
  • Page 26 • PCB MAIN Mesurement point...
  • Page 27 • PCB SUB...
  • Page 28 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 29: Circuit Diagram

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

  • Page 30: 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. P.C.B. LOCATION NO NAME SYMBOL SPECIFICATION...

  • Page 31: 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 32  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) PART CODE PART NAME DESCRIPTION Q'TY...
  • Page 33 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : R639R0S001 PRINTED DATE: Jan, 2002...

Table of Contents