Daewoo KOR-86DB7P Service Manual
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Daewoo KOR-86DB7P Service Manual

Daewoo KOR-86DB7P Service Manual

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Service Manual
Microwave Oven
Model: KOR-861H0P (AL)
KOR-86DB7P
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. : R631G0A002
S/M No. : R861H0PAL2
Dec. 2003

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Summary of Contents for Daewoo KOR-86DB7P

  • 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 Dec. 2003...

  • 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 CAUTION This Device is to be Serviced Only by Properly Qualified Service Personnel. 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

    59 min. 90 sec. FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 10 LEVELS CAVITY VOLUME 0.9 Cu. Ft. * SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. MODEL KOR-86DB7P POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1300W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION (1) KOR-861H0P (2) KOR-86DB7P...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1. DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. 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 7: Control Panel

    3. CONTROL PANEL (1) KOR-861H0P DEF TIMER LOCK Dish Warmer Pasta Fresh Vegetable Beverage Frozen Vegetable Frozen Pizza Auto Defrost Fish Poultry Meat 10m. 10s. Kitchen Power Defrost Clock Timer STOP/ START/ CLEAR SPEEDY COOK 1. Time set pad – Used to set the cooking time and the present time. 2.
  • Page 8 (2) KOR-86DB7P DEF. POWER DEFROST CLOCK AUTO COOK BEVERAGE MORE PROZEN PIZZA LESS PASTA 10MIN 1 MIN 10SEC 1HOUR 10MIN 1MIN STOP START CLEAR SPEEDY COOK 11. Display – Cooking time, power level, indicators and present time are displayed. 12. Power – Used to set power level.

  • Page 9: Installation

    INSTALLATION 1. Steady, flat location. This oven should be set on a steady, flat surface. This oven is designed for counter top use only. 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, oven failure.

  • 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: 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 12 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push 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 13 KOR-63150S 3511705620 DOOR WELD AS KOR-81250S 3517002900 BARRIER-SCREEN *I POLYESTER T0.1 3512300400 GASKET DOOR 3513100700 HOOK 3515101300 SPRING HOOK (2) KOR-86DB7P REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3512204190 FRAME DOOR ABS SG-175 3517005780 BARRIER-SCREEN*0 PET T0.125 3515204100...
  • Page 14 (1) Remove the gasket door from door weld as. (2) Remove the door frame from door weld as. (3) Remove the stopper hinge top from door weld as. (4) Remove the spring and the hook. (5) Remove the barrier screen outer from door frame. (6) Reverse the above steps for reassembly.
  • Page 15 SCREW TAPPING T2S TRS 4X12 MFZN 3513702710 LEVER DOOR OPEN ABS XR-401 H-2938 441G430171 SPRING BUTTON SWP DIA0.7 3516906900 BUTTON DOOR OPEN ABS XR-401 H-2938 (2) KOR-86DB7P REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3518521280 SWITCH MEMBREANE KOR-86DB5S 3516719360...
  • Page 16 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 17 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 18: 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 19: 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 20 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective mag- Outlet has Check continuity of magnetron Continuity netron proper volt- age Fuse does not Replace blow. Open power sup- Check continuity of Continuity ply cord power supply cord Replace Normal Defective touch control circuit Replace Display do not shown...
  • Page 21 (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 Replace high voltage fuse Continuity Replace Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed former...
  • Page 22 (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) “ :0” does not display when power is on. 2.

  • 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 (KOR-861H0P) 1. CIRCUIT CHECK PROCEDURE 1. Low Voltage Transformer check • The low voltage transformer is located on the P.C.B. • Measuring condition: input voltage : 220V/Frequency : 60Hz Terminal Voltage LOAD NO LOAD AC 12.6 V AC 14.7 V NOTE : 1.
  • Page 28 Measure Point...
  • Page 29 3. When there is no microwave oscillation 1) When touching START pad, 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 30: Pcb Circuit Diagram

    2. PCB CIRCUIT DIAGRAM...

  • Page 31: 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 32 PRINTED CIRCUIT BOARD (KOR-86DB7P) 1. CIRCUIT CHECK PROCEDURE 1. Low Voltage Transformer check ¥ The low voltage transformer is located on the P.C.B. ¥ Measuring condition: input voltage : 127V/Frequency : 60Hz Terminal Voltage LOAD NO LOAD AC 25.8 V AC 28.4 V...
  • Page 33 Measure Point...
  • Page 34 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. refer to Circuit Diagram (Point 3) - Check method POINT STATE...
  • Page 35 2. PCB CIRCUIT DIAGRAM 2. PCB CIRCUIT DIAGRAM...
  • Page 36 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. (2) KOR-86DB7P (1) KOR-86DB7C NAME...

  • Page 37: 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 38  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) (1) KOR-861H0P PART CODE PART NAME DESCRIPTION...
  • 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) (2) KOR-86DB7P PART CODE...
  • Page 40 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. : R861H0PAL2 PRINTED DATE: Dec, 2003...

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