Daewoo KOR-637V0S Service Manual
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Daewoo KOR-637V0S Service Manual

Daewoo KOR-637V0S Service Manual

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Service Manual
Microwave Oven
Model: KOR-637V0S
KOR-633V0S
 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. : R637V0S001
Jan. 2002

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Summary of Contents for Daewoo KOR-637V0S

  • 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-637V0S KOR-633V0S POWER SUPPLY 120V~60Hz, SINGLE PHASE WITH GROUNDING MICROWAVE 1,200W POWER GRILL CONSUMPTION COMBINATION COMBINATION MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W x H x D) 465 x 279 x 360 mm (18.3 x 11.0 x 14.2 in) 465 x 279 x 365 mm (18.3 x 11.0 x 14.4 in)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION (1) KOR-637V0S (2) KOR-633V0S 365/392 465/495...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1 SAFETY INTERLOCK SYSTEM 2 DOOR SCREEN Allows viewing of food. The screen is transparent to light, but prevents microwaves escaping. 3 DOOR LATCH When the door is closed, it will automatically shut off. If the door is opened while the oven operating, the magnetron tube will immediately stop operating.

  • Page 7: Control Panel

    3. CONTROL PANEL (1) KOR-637V0S DEF. LOCK PURIFI POWER/ AUTO COOK CLOCK DEFROST 1. Dinner Plote STERILIZATION 2. Soup 3. Beverage 4. Fresh Vegetable START/ STOP/CLEAR EASY COOK 1 AUTO COOK Used to cook using a program or to reheat.
  • Page 8 (2) KOR-633V0S KOR-633V AUTO COOK 1. Dinner Plate 2. Soup 3. Beverage 4. Fresh Vegetable STERILIZATION POWER/DEF. CLOCK DEF. LOCK STERIL. g STOP/ CLEAR START/ EASY COOK Weight/ Time 1 AUTO COOK Used to cook using a program or to reheat. 2 STERILIZATION Used to sterilize baby bottle, cup, plate, etc.

  • Page 9: 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 10: 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 11: Important Safety Instructions For Sterilization

    IMPORTANT SAFETY INSTRUCTIONS FOR STERILIZATION 1. Do not use the oven for the food. 2. Caution: Surface of utensil, tableware, etc., must be directly exposed to UV light for effective sterilization. The ultraviolet ray can’t penetrate through the materials such as glass, metal and plastic. 3.

  • Page 12: 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 13 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 14 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. (1) KOR-637V0S REF NO. PART CODE...
  • Page 15  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) (2) KOR-633V0S REF NO.
  • Page 16 4. Method to reduce the gap between the door seal and the oven front surface. (1) To reduce gap located on part ‘A’ Loosen a screws on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten two screws.
  • Page 17 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. (1) KOR-637V0S REF NO. PART CODE...
  • Page 18  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. (2) KOR-633V0S REF NO.
  • Page 19 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 20 Metallic Magnetron gasket antenna plate Cooling fin Filament terminal 8. To remove wind guide assembly. 1) Remove a screw for earthing. 2) Remove a screw which secure the wind guide assembly. 3) Draw forward the wind guide assembly. 4) Pull the fan from the motor shaft. 5) Remove two screws which secure the motor shaded pole.
  • Page 21 10. To remove UV lamp assembly. 1) Remove the screw which secure the UV lamp assembly to the top-plate. 2) Remove the screw which hold the socket starter *O to the cover lamp. 3) Remove the socket starter *O from the cover lamp by pushing up two snap fits.

  • Page 22: 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 FRONT-PLATE SWITCH...

  • Page 23: 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 24 CONDITION CHECK RESULT CAUSE REMEDY Defective Outlet has Check continuity of Replace continuity magnetron. proper volt- magnetron fuse does not blow. Defective line Check continuity of noise filter Replace continuity filter board board Open power Check continuity of Replace continuity supply cord power supply cord Defective touch...
  • Page 25 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY No Continuity Check continuity of high microwave voltage fuse oscillation Continuity Replace Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed former Continuity in Replace...
  • Page 26 (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 27 (TROUBLE 4) Press purification button, but oven don't start purifying. CONDITION CHECK RESULT CAUSE REMEDY Adjust or Malfunction of Check continuity of primary Continuity Replace purification primary interlock interlock switch switch Adjust or Malfunction of Check continuity of secondary Continuity Replace primary interlock interlock and D.O.M switch...

  • Page 28: 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 29: 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 30: 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 31: Wiring Diagram

    WIRING DIAGRAM...

  • Page 32: 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 AC 12.6 V AC 14.7 V NOTE : 1.
  • Page 33 Measure Point...
  • Page 35 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 36: Pcb Circuit Diagram

    2. PCB CIRCUIT DIAGRAM...

  • Page 37: 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 38: 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 (1) KOR-637V0S...
  • Page 39 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) (1) KOR-637V0S PART CODE...
  • Page 40 PART NAME DESCRIPTION Q'TY 3513811710 LOCK POM BLACK 3513601600 LAMP BL 240V 25W T25 C7A H187 3512715070 HARNESS MAIN KOR-637V0S 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 3966310100 MOTOR SYNCRO 220V 2.5W GM-16-24FD12 3518905300 THERMOSTAT OFF:75 ON:65 H #187 NR 3513003400...
  • Page 41 1. DOOR ASSEMBLY Refer to Disassembly and assembly. 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly. 3. TOTAL ASSEMBLY (2) KOR-633V0S...
  • Page 42 KOR-63350S PKCPSWZ320 CONTROL PANEL AS KOR-633V0S 3510805300 CABINET AS KOR-61150S 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516109590 CAVITY AS KOR-637V0S 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 3515900100 SOCKET LAMP 3519300300 TERMINAL LAMP BRASS 3513603000 LAMP GERMICIDAL G4T5/4W SANKYO...
  • Page 43 PART NAME DESCRIPTION Q'TY 3513811710 LOCK POM BLACK 3513601600 LAMP BL 240V 25W T25 C7A H187 3512715070 HARNESS MAIN KOR-637V0S 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 3966310100 MOTOR SYNCRO 220V 2.5W GM-16-24FD12 3518905300 THERMOSTAT OFF:75 ON:65 H #187 NR 3513003400...
  • Page 44 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. : R637V0S001 PRINTED DATE: Jan, 2002...

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