Daewoo KOR-41151S Service Manual
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Daewoo KOR-41151S Service Manual

Daewoo KOR-41151S Service Manual

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S/M No. : R4125EU011
Service Manual

Microwave Oven

Model: KOR-41151S
KOR-41251S
KOR-41351S
KOR-41951S
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
Jul. 2005

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Summary of Contents for Daewoo KOR-41151S

  • Page 1: Microwave Oven

    S/M No. : R4125EU011 Service Manual Microwave Oven Model: KOR-41151S KOR-41251S KOR-41351S KOR-41951S 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 Jul.

  • 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-41151S POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING POWER CONSUMPTION MICROWAVE 920 W MICROWAVE ENERGY OUTPUT 600 W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS (W X H X D) 444 x 235 x 344 mm CAVITY DIMENSIONS (W X H X D)
  • Page 5 MODEL KOR-41351S POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING POWER CONSUMPTION MICROWAVE 920 W MICROWAVE ENERGY OUTPUT 600 W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS (W X H X D) 444 x 235 x 342 mm CAVITY DIMENSIONS (W X H X D) 265 x 172 x 270 mm NET WEIGHT Approx.

  • Page 6: External View

    EXTERNAL VIEW 1. OUTER DIMENSION (KOR-41151S) (KOR-41251S)
  • Page 7 (KOR-41351S) (KOR-41951S)

  • Page 8: Feature Diagram

    2. FEATURE DIAGRAM (KOR-41151S) 1. SAFETY INTERLOCK SYSTEM 2. DOORVIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.
  • Page 9 (KOR-41251S) 1. SAFETY INTERLOCK SYSTEM 2. DOORVIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.
  • Page 10 (KOR-41351S) 1. SAFETY INTERLOCK SYSTEM 2. DOORVIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.
  • Page 11 (KOR-41951S) 1. SAFETY INTERLOCK SYSTEM 2. DOORVIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.

  • Page 12: 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 13: 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 14: 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 15 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Pull the cabinet backward. 2. To remove door assembly 1) Remove a screw which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavity. 3) Reverse the above for reassembly.
  • Page 16 3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3512203101 FRAME DOOR ABS SG-175 SG-0760D 41151S 3512203110 FRAME DOOR ABS SG-175 SG-0760D 41251S 3512203130 FRAME DOOR ABS SG-175 SG-0760D 41351S 3512208810 FRAME DOOR HIPS SG-970 HG-1760H 41951S 3517003840 BARRIER-SCREEN *O...
  • Page 17 (7) Reverse the above steps for reassembly. * DOOR ASSEMBLY 모 모 델 델 명 명 D D O O O O R R A A S S S S Y Y C C O O D D E E KOR-41151S 3511707170 KOR-41251S 3511707180...
  • Page 18 5. To remove control panel parts. (KOR-41151S) REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3513403700 KNOB VPC ABS SG-175 SG-0760D 3516714101 CONTROL-PANEL ABS SG-175 SG-0760D 3515101600 SPRING FLAT SUS 301 T0.5 3517401020 COUPLER VPC KNOB 7S312X40A1 SCREW SPECIAL...
  • Page 19 (KOR-41251S) REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3513403710 KNOB VPC ABS SG-175 SG-0760D 3516714110 CONTROL-PANEL ABS SG-175 SG-0760D 3515101600 SPRING FLAT SUS 301 T0.5 3517401020 COUPLER VPC KNOB 7S312X40A1 SCREW SPECIAL T1 TRS 4X10 MFZN 3513403610 KNOB ABS SG-175 SG-0760D 3518204720 TIMER...
  • Page 20 (KOR-41351S) REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3513403730 KNOB VPC ABS SG-175 SG-0760D 3516714131 CONTROL-PANEL ABS SG-175 SG-0760D 3515101600 SPRING FLAT SUS 301 T0.5 3517401020 COUPLER VPC KNOB 7S312X40A1 SCREW SPECIAL T1 TRS 4X10 MFZN 3513403630 KNOB ABS SG-175 SG-0760D 3518204720 TIMER...
  • Page 21 (KOR-41951S) REF NO. PART CODE PART NAME DESCRIPTION Q'TY REMARK 3513403760 KNOB VPC ABS SG-175 SG-0760D 3516732110 CONTROL-PANEL HIPS SG-970 HG-1760H 3515101600 SPRING FLAT SUS 301 T0.5 3517401020 COUPLER VPC KNOB 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3513403660 KNOB ABS SG-175 SG-0760D 3518204720 TIMER...
  • Page 22 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 23 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 24: 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. KOR-41151S KOR-41351S KOR-41951S...
  • Page 25 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. KOR-41251S LOCK ASSY Secondary interlock switch...

  • Page 26: 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 27 Does the fan motor work when you shut the door and turn the timer? Does the oven lamp light? Replace or repair oven lamp, Does the turntable turn? turntable motor. Normal reading should be approx. 0 Check continuity If microwave do not No Continuity Continuity Replace high...

  • 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 WARNING : Make sure to check the microwave leakage before and after repair of adjustment. Always start measuring of an unknown field to assure safety for operating personnel from microwave energy. Do not place your hands into any suspected microwave radiation field unless the safe density level is known. Care should be taken not to place the eyes in direct line with the source of microwave energy.

  • 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: 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 (KOR-41151S)
  • Page 33 T1 TRS 4*10 MFZN 3512100900 FOOT PP DASF-130 7272400811 SCREW SPECIAL TT3 TRS 4X8 MFZN 3515202300 STOPPER HINGE *U KOR-41125J KOR-41151S (VE EC 향) 3512711840 HARNESS MAIN 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3518570400 SWITCH S/A RELAY DWSR-1 4415A17352...
  • Page 34 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 (KOR-41251S)
  • Page 35 PART CODE PART NAME DESCRIPTION Q'TY 3511707180 DOOR AS KOR-41251S 3516715510 CONTROL-PANEL AS KOR-41250S 3510806300 CABINET KOR-41151S 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516106600 CAVITY AS KOR-41125J 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN...
  • Page 36 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 (KOR-41351S)
  • Page 37 T1 TRS 4*10 MFZN 3512100900 FOOT PP DASF-130 7272400811 SCREW SPECIAL TT3 TRS 4X8 MFZN 3515202300 STOPPER HINGE *U KOR-41125J KOR-41151S (VE EC 향) 3512711840 HARNESS MAIN 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3518570400 SWITCH S/A RELAY DWSR-1 4415A17352...
  • Page 38 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 (KOR-41951S)
  • Page 39 FOOT PP DASF-130 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 3515202300 STOPPER HINGE *U AS KOR-41125J 3512711840 HARNESS MAIN KOR-41151S (EC) 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3518570400 SWITCH S/A RELAY DWSR-1 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G...
  • Page 40 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : R4125EU011 PRINTED DATE: Jul. 2005...

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