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S/M No.: R180A0A002
Service Manual
Microwave Oven
Model : KOR-180A0A
KOR-181G0A
DAEWOO ELECTRONICS CO., LTD.
http://svc.dwe.co.kr
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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 if 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
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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. 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 FOLLOWI
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SPECIFICATIONS MODEL KOR-180A, KOR-181G POWER SUPPLY 120V~60HZ, SINGLE PHASE WITH EARTHING MICROWAVE 1500 W POWER GRILL CONSUMPTION COMBINATION MICROWAVE ENERGY OUTPUT 1100 W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 589X339X488mm (23.2X13.3X19.2 in.) CAVITY DIMENSIONS (W X H X D) 399X278X451mm (15.7X10.9X17.8 in.) NET WEIGHT APPROX. 18kg (39.7 lbs.) TIMER 99min. 99sec. FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 10 LEVELS CAVITY VOLUME 1.8 Cu. Ft * Specifications are subjec
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EXTERNAL VIEW 1. OUTER DIMENSION 488 5
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2. FEATURE DIAGRAM KOR-180A0A 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. 3. DOOR SCREEN Allows viewing of food. Microwave cannot pass through perforations in screen. 4. SPATTER SHIELD Protects the microwave outlet from splashes of cooking foods. 5. OVEN LAMP Automatically turns on d
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3. CONTROL PANEL (1) KOR-180A0A KOR-180A0A 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. Auto cook - Used to cook or reheat. 5. More - Used to add time to cooking. 6. Less - Used to remove time from cooking. 7. Auto Defrost - Used to defrost foods.(for weight) 8. Power - Used to set power level. 9. Defrost - Used to defros
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(2) KOR-181G0A M/W DEF TIMER LOCK lb MICROWAVE OVEN KOR-181G POPCORN 1. BREAD 2. SOUP MORE 3. BAKED POTATO FROZEN 4. FRESH VEGETABLE PIZZA 5. FROZEN VEGETABLE LESS DINNER AUTO PLATE COOK AUTO DEFROST MEAT POULTRY FISH 12 3 POWER 45 6 78 9 DEFROST KITCHEN CLOCK TIMER 0 STOP/ START/ CLEAR SPEEDY COOK 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 q
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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 be overheated and, eventually, cause oven failure. 3. Away from radio, and TV sets Poor television reception and radio interference may result if the oven is located close to a TV, radio, antenna, or feeder and so on. Position the oven as far from them as possible. 4. A
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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. Close the door securely. 4. The oven door can be opened at any time during operation by touching the door release button on the control panel. The oven will automatically shut off. To restart the oven, close the door and then touch START. 5. Each time a pad is touche
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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. 1. Always remove the power plug from the outlet before servicing. 2. Use an insulated screwdriver and wear rub
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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. NOTE : After replacing the door assembly, perform a check of correct alignment with the hinge and cavity front plate. 12
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3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q TY REMARK 3512205100 1 KOR-180A A01 FRAME DOOR ABS SG-175, SG-0760D 3512203900 1 KOR-181G KOR-180A 3517007400 1 A02 BARRIER-SCREEN*O SAN T1.5 3517005320 1 KOR-181G A03 3515204400 KOR-162J0A STOPPER HINGE *T AS 1 A04 3511710500 DOOR PAINTING AS 1 KOR-180A A05 3517005200 BARRIER-SCREEN*I PE T0.1 1 3512301800 1 A06 GASKET DOOR PP A07 3513101400 POM 1 HOOK A08 3515101900 SPRING HOOK PW-1 1 (1) Remove the gasket door from door plate.
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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 screws on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten two screws. (2) To reduce gap located on part B . Loosen two screws on stopper hinge under, and then push the door to contact the door seal to oven front surface. Tighten two screws. 2 NOTE : A small gap may be acceptable if the microwave leakage does not excee
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5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q TY REMARK 3518522800 KOR-180A0A 1 SWITCH MEMBRANE A01 3518522810 KOR-181G2A 1 3516726000 1 KOR-180A ABS AF-348, VT-0826 A02 CONTROL PANEL 3516719100 1 KOR-180G A03 PKMPMSXL00 PCB AS KOR-161G2A 1 A04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 4 A05 3513702800 LEVER DOOR OPEN PP 1 A06 441G430171 BUTTON SPRING SWP DIA 0.7 1 A07 3516909600 BUTTON DOOR OPEN ABS AF-348, VT-0826 1 (1) Remove the screw which secure the control p
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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. To remove magnetron. 1) Remove a screw which secure the magnetron. 2) Remove the magnetron. 3) Reverse the above steps for reassembly. NOTE : Never install the magnetron without the metallic gasket plate which is packed with each mag
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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. 6) Reverse the above steps for reasembly. 9. To remove H.V.transformer. 1) Remove four screws holding the H.V.transformer. 2) Remove the H.V.transformer. 3) Reverse the above steps for reassembly. 17
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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. If the door is not closed properly, the oven will not operate. When the door is closed, the hook pushes the button of the microswitch. Then t
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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 tranformer, disconnect one load wire from these parts and check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter. NOTE : When electric parts are che
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CONDITION CHECK RESULT CAUSE REMEDY Replace No Defective Outlet has Check continuity of magnetron Continuity magnetron proper voltage Fuse does not Replace blow. No Check continuity of Open power Continuity supply cord power supply cord Replace Normal Defective touch control circuit Replace Malfunction of Display do not shown countdown secondary interlock switch NOTE1 All these switches must be replaced at the same time, please refer to Interlock Mechanism And Adjustment . (TROUBLE 2) Display s
