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S/M No. : R6N575S001
Service Manual
Microwave Oven
Model: KOR-6N575S
✔ 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).
July. 2006
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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 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 lat
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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. (2) A broken door viewing screen. (3) A broken front panel, oven cavity. (4) A loosened door lock. (5) A broken door lock. The d
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SPECIFICATIONS MODEL KOR-6N575S POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH GROUNDING POWER CONSUMPTION MICROWAVE 1,200W MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS(WXHXD) 465 x 279 x 360mm CAVITY DIMENSIONS(WXHXD) 290 x 220 x 306 mm NET WEIGHT APPROX. 11.4kg (25.2 Ibs.) TIMER 60 MIN. DUAL SPEED FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 7 LEVELS CAVITY VOLUME 0.7 Cu. Ft. * SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. 3
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EXTERNAL VIEW 1. OUTER DIMENSION 4
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2. FEATURE DIAGRAM 3 5 1 9 10 2 4 7 8 6 1. Safety interlock system 2. Door viewing 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 shut off. If the door is opened while the oven is operating, the automatically shut off. 4. Oven cavity 5. Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leak-age. 6. Glass cooking tray - Made
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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. 4. Away from heating appliances and water taps Keep
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OPERATIONS AND FUNCTIONS 1. Connect the main lead to an electrical outlet. NOTE 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 1. When setting timer for less than 2 minutes, place during cooking. tum the timer past 2 minutes and then return to the correct timer setting. 3. Close the door securely. 4. Choose cooking power level by setting V.P.C knob to the desired position. Refer to cookbook for recommended powe
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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. 1. Always remove the power plug from the outlet before servicing. 2. Use an insulated screwdriver and ware rubbe
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1. To remove cabinet 1) Remove three screws on cabinet back. 2) Pull the cabinet backward. 2. To remove door assembly 1) Remove the screw 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. 9
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3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK A01 3512203850 FRAME DOOR ABS XR-401, H-2938 1 A02 3517005620 BARRIER-SCREEN*O TEMP GLASS T3.2 1 A03 3515204100 STOPPER HINGE*T AS KOR-63150S 1 A04 3511706120 DOOR PAINTING AS KOR-634R0S 1 A05 3517002800 BARRIER-SCREEN*I PE 0.1T 1 A06 3512300200 GASKET DOOR PP 1 A07 3513100730 HOOK POM BLACK 1 A08 3515101310 SPRING HOOK HSW-3 1 A09 7122401611 SCREW TAPPING T2SN TRS 4X16 MFZN 2 A10 3512603300 HANDLE DOOR *U ABS XR-401,
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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 the screw on stopper hinge top, and then push the door to contact the door seal to oven front surface. • Tighten a screw. (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 B01 3513405460 KNOB VPC ABS XR-401, H-2938 1 B02 3513405460 KNOB TIMER ABS XR-401, H-2938 1 B03 3511603930 DECORATOR C-PANEL STS T0.6 1 B04 3516003950 SPECIAL DOUBLE TAPE SI-161 T0.15 1 B05 3516719070 CONTROL PANEL ABS XR-401, H-2938 1 B06 3515101600 SPRING FLAT SUS 301 T0.5 1 B07 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 1 B08 3518205100 TIMER KN60MKD 12E-P 1 B09 7122401211 SCREW TAPPING T2S TRS 4*12 MFZN 2
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6. To remove high voltage capacitor. 1) Remove the 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 the 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
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8. To remove wind guide assembly. 1) Remove the screw for earthing. 2) Remove the noise filter from the wind guide. 3) Remove the 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. 7) Remove the motor shaded pole. 8) Reverse the above steps for reassembly. 9. To remove H.V.transformer. 1) Remove four screws holding the H.V.transformer. 2) Remove the H.V.transformer. 3
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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 th
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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. To do otherwise may result in a false reading or damage to your meter. (TROUBLE 1) Door shut, timer set,
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Does the fan motor work when you shut the door and turn the timer? YES NO Does the oven lamp light? Replace or repair oven lamp, Does the turntable turn? turntable motor. YES Normal reading should be approx. 0 NO Check continuity If microwave do not Continuity No Continuity Replace high filament tap (3.3V) oscillate, check continuity voltage transformer of high voltage transformer. of filament of magnetron. Continuity Poor continuity Continuity in the reverse Check continuity Replace high di
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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. 2. The water is contained in a cylindrical borosilicate glass vessel having a
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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. Slowly approach the unit under test until the radiometer reads an appre
