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S/M No. : G131A9A11001
Service Manual
Microwave Oven
Model: KOG-131A9A11
4 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 CORP.
http : //svc.dwe.co.kr Nov. 2002
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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 KOG-131A9A11 POWER SUPPLY 120V~60H , SINGLE PHASE WITH EARTHING Z POWER MICROWAVE 1350W CONSUMPTIONGRILL 1150W MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 563X318X418mm (22.1X12.5X16.5 in.) CAVITY DIMENSIONS (W X H X D) 380X246X386mm (14.9X9.7X15.2 in.) NET WEIGHT APPROX. 17.5kg (38.6 lbs) TIMER 99min. 99sec. FUNCTION SELECTIONS MICROWAVE, GRILL POWER SELECTIONS 10 LEVELS CAVITY VOLUME 1.3 Cu. Ft * Specifications are subject to ch
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EXTERNAL VIEW 1. OUTER DIMENSION 563 418 5 318
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2. FEATURE DIAGRAM 1we 56 7 0 2394 8 r q 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 Automaticall
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3. CONTROL PANEL 2 M/W Defrost Grill Timer/ lb 1. Bread 2. Soup Auto 3. Baked Potato 4 4. Fresh Vegetable Cook 5. Frozen Vegetable r M/W Grill Defrost 9 8 Dish Pasta Warmer LESS MORE 3 Frozen Beverage Pizza 5 6 Auto Defrost Fish Poultry Meat 7 123 1 456 789 Kitchen Clock Timer 0 0 q w e Stop/Clear Start/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
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INSTALLATION 1. Steady, flat location This microwave oven should be set on a steady, flat surface. This microwave 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, 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.
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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. When the oven door is opened, the light turns on. 5. 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 do
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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. 11
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4 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. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY A01 3512204500 FRAME DOOR ABS XR-401, SR-0320M 1 A02 3517006500 BARRIER SCREEN *O PEPT T0.25 1 A03 3515202900 STOPPER HINGE *T AS KOR-121M0A 1 A04 3511713600 DOOR
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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’. 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. B 2 NOTE : A small gap may be acceptable if the microwave leakage does
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4 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) 5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY B01 3518523210 SWITCH MEMBRANE KOG-131A9A11 1 B02 3516723910 CONTROL PANEL ABS AF-345, VE-345, VE-0855 1 B03 3514324340 PCB AS KOG-131A9A11 1 B04 7122401211
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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. 7. High voltage circuit wiring 8. 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
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9. 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 reassembly. 10. 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. 16
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4 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) 11. To remove insulator Heater assembly. 1) Remove the HEX NUT (F09). 2) Remove the two HEX NUTS (F43). 3) Remove the insulator Heater assembly (C00). 4) Reverse the above steps for reassembly. REF NO. PART NAME PART CODE DESCRIPTION Q
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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. DOOR LATCH BK WH RD BK FRONT-PLATE BK PRIMARY INTERLOCK SWITCH WH GY INTERLOCK MONITOR SWITCH BUTTON LAMP SWITCH BK/RD SECONDARY INTERLOCK SWITCH WH/WH MOUNTING SCREW GN RD BL LOCK LEVER WH : WHITE BK : BLACK RD : RED GY : GRA
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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 Outlet has Defective Check continuity of magnetron Continuity proper magnetron voltage Fuse does not Replace blow. No Check continuity of Open power Continuity power supply cord supply cord Replace Normal Defective touch control circuit Replace Malfunction of Display do not shown D.O.M Switch countdown NOTE All these switches must be replaced at the same time, please refer to “Interlock Mechanism And Adjustment”. (TROUBLE 2) Display shows all figur
