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Daewoo KOR-131G0A Service Manual

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Service Manual
Microwave Oven
Model: KOR-131G0A
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.
S/M No. : R131GH0A01
KOR-131H0A
KOR-130A0A
KOR-131G4A
KOR-131H4A
KOR-131S4A

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Summary of Contents for Daewoo KOR-131G0A

  • 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.

  • 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 microwave 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

    PRECAUTIONS CAUTION This Device is to be Serviced Only by Properly Qualified Service Personner. 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 MODEL KOR-130A, KOR-131G and KOR-131H KOR-131G4,KOR-131H4 and KOR-131S4 POWER SUPPLY 120V-60Hz, SINGLE PHASE WITH GROUNDING MICROWAVE 1400W 1500W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 1000W 1100W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 563 x 318 x 418 mm (22.1 x 12.5 x 16.5in ) CAVITY DIMENSIONS (W X H X D) 380 x 246 x 386 mm (14.9 x 9.7 x 15.2in) NET WEIGHT...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    EXTERNAL VIEW 2. FEATURE DIAGRAM 1. DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. DOOR HOOK When door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating.

  • Page 7: Control Panel

    EXTERNAL VIEW 3. CONTROL PANEL 1) KOR-131G / KOR-131G4 1. Time set pad - Used to set the cooking time and the present time. 2. Display - Cooking time, power level, indicators and present time are displayed. 3. One touch - Used to cook or reheat specific quantities of food. 4.
  • Page 8 EXTERNAL VIEW 2) KOR-131H / KOR-131H4 1. Time set pad - Used to set the cooking time and the present time. 2. Display - Cooking time, power level, indicators and present time are displayed. 3. One touch - Used to cook or reheat specific quantities of food. 4.
  • Page 9 EXTERNAL VIEW 3) KOR-130A 1. Time set pad - Used to set the cooking time and the present time. 2. Display - Cooking time, power level, indicators and present time are displayed. 3. One touch - Used to cook or reheat specific quantities of food. 4.
  • Page 10 EXTERNAL VIEW 4) KOR-131S4 1. Time set pad - Used to set the cooking time and the present time. 2. Display - Cooking time, power level, indicators and present time are displayed. 3. Sensor cook - Used to automatically compute the microwave power and cooking time for foods. 4.

  • Page 11: Installation

    INSTALLATION 1. Steady, flat location This microwave oven should be set on a steady, flat surface. 2. Leave space behind and side All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually, cause oven failure.

  • Page 12: 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 13: 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 14 DISASSEMBLY AND ASSEMBLY 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 15 3512204500 FRAME DOOR ABS XR-401, SR-0320M (KOR-131G/H) 3517006500 BARRIER-SCREEN *O PEPT T0.25 3515202900 STOPPER HINGE *T AS KOR-121M0A 3511713600 DOOR PAINTING AS KOR-131G0A 3517006400 BARRIER SCREEN *I PE T0.1 3512302200 GASKET DOOR 3513101400 HOOK 3515101900 SPRING HOOK PW-1 1) Remove the gasket door from door plate.
  • Page 16 DISASSEMBLY AND ASSEMBLY 4. Method to reduce the gap between the door seal and the oven front surface. 1) To reduce gap located on part ‘A’. Loosen two serew on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten two screws.
  • Page 17 DISASSEMBLY AND ASSEMBLY 5. To remove control panel parts. REF. NO PART CODE PART NAME DESCRIPTION Q'TY 3518522420 SWITCH MEMBRANE KOR-130A0A 3518522400 SWITCH MEMBRANE KOR-131G0A 3518522410 SWITCH MEMBRANE KOR-131H0A 3518522430 SWITCH MEMBRANE KOR-131S4A 3516723900 CONTROL-PANEL ABS AF-345, VE-0855 (KOR-130A) 3516723910 CONTROL-PANEL...
  • Page 18 DISASSEMBLY AND ASSEMBLY 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 19 DISASSEMBLY AND ASSEMBLY 8. To remove wind guide assembly. KOR-131G, KOR-131H and KOR-130A (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 20 DISASSEMBLY AND ASSEMBLY KOR-131H4, KOR-131G4 and KOR-131S4 (1) Remove a screw which secure the wind guide assembly. (2) Draw forward the wind guide assembly. (3) Remove the noise filter from the guide wind. (4) Pull the fan from the motor shaft. (5) Remove two screws which secure the motor shaded pole.

  • Page 21: 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 22: 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 23 TROUBLE SHOOTING GUIDE CONDITION CHECK RESULT CAUSE REMEDY Replace Check continuity of Defective Outlet has magnetron Continuity magnetron proper voltage Fuse does not blow. Open power Replace Check continuity of power supply cord Continuity supply cord Replace Normal Defective touch control circuit Replace Display do not...
  • Page 24 TROUBLE SHOOTING GUIDE ( TROUBLE 3 ) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Replace Continuity Defective No microwave Check continuity of high high voltage oscillation voltage capacitor transformer terminals with wires removed Replace Continuity in Defective Check continuity of high...
  • Page 25 TROUBLE SHOOTING GUIDE ( TROUBLE 4 ) The following visual conditions indicate a probable defective touch control circuit or membrane switch assembly. 1. Incomplete segments, 1) Segments missing. 2) Partical segments missing. 3) Digit flickering other than normal display slight flickering. 4) “...

  • Page 26: 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 27: Microwave Radiation Test

    MEASUREMENT AND 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 28: Component Test Procedure

    MEASUREMENT AND TEST 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. 1.

  • Page 29: Wiring Diagram

    WIRING DIAGRAM...

  • Page 30: 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: 120 V / Frequency: 60Hz Terminal Voltage LOAD NO LOAD 4 - 7 AC 12.6 V AC 14.7 V NOTE 1.
  • Page 31 PRINTED CIRCUIT BOARD Measure Point...
  • Page 32 PRINTED CIRCUIT BOARD 3. When there is no microwave oscillation 1) When touching START pad, oven lamp does not turn on. Fan motor does not rotate, but cook indicator in display comes on. * Cause : RELAY 2 does not operate. ¡ æ refer to Circuit Diagram ( Point 3) - Check method POINT STATE...

  • Page 33: Circuit Diagram

    PRINTED CIRCUIT BOARD 2. P.C.B. CIRCUIT DIAGRAM...

  • Page 34: 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) PRINTED CIRCUIT BOARD 3.
  • Page 35  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) PRINTED CIRCUIT BOARD 2) KOR-131H4 and KOR-131G4 NAME SYMBOL...

  • Page 36: Circuit Check Procedure

    PRINTED CIRCUIT BOARD(KOR-131S4) 1. CIRCUIT CHECK PROCEDURE 1. Low voltage transformer check The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 120 V / Frequency: 60Hz Terminal Voltage LOAD NO LOAD 4 - 7 AC 12.6 V AC 14.7 V NOTE 1.
  • Page 37 PRINTED CIRCUIT BOARD PRINTED CIRCUIT BOARD Measure Point...
  • Page 38 PRINTED CIRCUIT BOARD 3. When there is no microwave oscillation 1) When touching START pad, oven lamp does not turn on. Fan motor does not rotate, but cook indicator in display comes on. * Cause : RELAY 2 does not operate. ¡ æ refer to Circuit Diagram ( Point 3) - Check method POINT STATE...
  • Page 39 PRINTED CIRCUIT BOARD 6. When Er01 & Er03 come on display. ¡ æ Refer to circuit diagram (Point 6) - Check method * In AUTO REHEATING just operating, checking point A, B, C & D after 1~2 minutes. CHECK POINT REMARK Tolerance 0.5V...

  • Page 40: Circuit Diagram

    PRINTED CIRCUIT BOARD 2. PCB CIRCUIT DIAGRAM...

  • Page 41: 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) PRINTED CIRCUIT BOARD 3.
  • Page 42  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) PRINTED CIRCUIT BOARD NAME SYMBOL SPECIFCATION...

  • Page 43: Exploded View And Parts List

    EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly. 2. CONTROL PANEL ASSEMBLY Refler to Disassembly and assembly. 3. TOTAL ASSEMBLY 1) KOR-131G, KOR-131H and KOR0130A...
  • Page 44 PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) EXPLODED VIEW AND PARTS LIST REF. NO PART CODE PART NAME DESCRIPTION Q'TY 3511713510 DOOR AS KOR-130A0A 3511713500 DOOR AS KOR-131G0A 3516724010 CONTROL-PANEL AS KOR-130A0A 3516724000 CONTROL-PANEL AS KOR-131G0A 3516724020 CONTROL-PANEL AS KOR-131H0A 3510803100 CABINET PCM T0.6...
  • Page 45  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) EXPLODED VIEW AND PARTS LIST REF.
  • Page 46 EXPLODED VIEW AND PARTS LIST 2) KOR-131H4 and KOR-131G4...
  • Page 47 PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) EXPLODED VIEW AND PARTS LIST REF. NO PART CODE PART NAME DESCRIPTION Q'TY 3511713500 DOOR AS KOR-131G0A 3516724030 CONTROL-PANEL AS KOR-131H4A 3516724040 CONTROL-PANEL AS KOR-131G4A 3510803100 CABINET PCM T0.6...
  • Page 48 EXPLODED VIEW AND PARTS LIST 3) KOR-131S4...
  • Page 49 PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) EXPLODED VIEW AND PARTS LIST REF. NO PART CODE PART NAME DESCRIPTION Q'TY 3511713500 DOOR AS KOR-131G0A 3516704050 CONTROL-PANEL AS KOR-131S4A 3510803100 CABINET PCM T0.6 3516004100 SPECIAL SCREW...

This manual is also suitable for:

Kor-131h0aKor-131g4aKor-131h4aKor-131s4a

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