Service Manual Microwave Oven Model :KOG-371G0S KOG-371H0S KOG-376T1S KOG-371R0S KOG-374R0S KOG-373R0S KOG-391G0S KOG-391H0S KOG-396T1S KOG-391R0S KOG-375R0S KOG-393R0S ✔ 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.
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.
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) 2) 3) 4) 5) A broken door hinge. A broken door viewing screen. A broken front panel, oven cavity. A loosened door lock. A broken door lock.
SPECIFICATIONS MODEL POWER SUPPLY KOG-371G/H/R0S, KOG-374R/5R0S KOG-391G/H/R0S 230~, 50Hz SINGLE PHASE WITH EARTHING MICROWAVE 1200W 1350W POWER CONSUMPTION GRILL 1050W 1050W COMBINATION 2200W 2350W MICROWAVE ENERGY OUTPUT 800W 900W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS(WXHXD) 465X279X360mm 495X294X388mm (18.3X11.0X14.2 in) (19.5X11.6X15.3 in) CAVITY DIMENSIONS(WXHXD) 290X220X306mm 320X244X338mm (11.4X8.7X12.0 in) (12.6X9.6X13.3 in) NET WEIGHT APPROX. 14Kg(30.9 lbs) APPROX. 16Kg(35.
EXTERNAL VIEW 1.
4) KOG-371R0S, KOG-391R0S 360/388 279/294 465/495 5) KOG-374R0S 360 279 465 6) KOG-375R0S 360 279 465 5
2. FEATURE DIAGRAM 1) KOG-371G/H0S, KOG-391G/H0S 1 2 3 4 5 6 7 12 11 10 9 8 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. DOOR RELEASE BUTTON - By pushing this button the latch system cut off all circuits and stops the oven before the door is opened. 7. METAL RACK 8.
2) KOG-376T1S, KOG-396T1S 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. CONTROL PANEL 7. METAL RACK 8. COUPLER - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking. 9. ROLLER GUIDE - This must always be used for cooking together with the glass cooking tray. 10.
3) KOG-371R0S, KOG-391R0S 1 2 3 4 5 6 7 12 11 10 9 8 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. CONTROL PANEL 7. DOOR OPENING BUTTON 8. METAL RACK 9. COUPLER - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking. 10.
4) KOG-374R0S q 1 2 3 5 6 0 4 8 9 7 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. METAL RACK 7. COUPLER - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking. 8. ROLLER GUIDE - This must always be used for cooking together with the glass cooking tray. 9.
5) KOG-375R0S q 1 2 3 5 6 0 4 8 9 7 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. METAL RACK 7. COUPLER - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking. 8. ROLLER GUIDE - This must always be used for cooking together with the glass cooking tray. 9.
6) KOG-373R0S, KOG-393R0S 1 2 3 4 5 6 q 0 9 8 7 1. DOOR SEAL - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2. REFLECTOR(Insulator Heater) 3. HEATING ELEMENT 4. OVEN CAVITY 5. SEFETY INTERLOCK SYSTEM 6. METAL RACK 7. COUPLER - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking. 8. ROLLER GUIDE - This must always be used for cooking together with the glass cooking tray. 9.
3. CONTROL PANEL 1) KOG-371G0S, KOG-391G0S 2 M/W Def. Grill Combi Timer/g 1. BREAD 2. SOUP 3. BAKED POTATO 4. FRESH VEGETABLE 5. FROZEN VEGETABLE Auto Cook 4 3 Pasta Beverage Frozen Pizza 5 6 Auto Defrost 7 Fish 8 0 Meat COMBI GRILL Defrost Power Kitchen Timer Clock w ur 1ho 10M r Poultry STOP/ CLEAR in q in 10m 1M 9 1m 10S START/ SPEEDY COOK e 1 t 1. TIME SET PAD - Used to set the cooking time and the present time. 2.
2) KOG-371H0S, KOG-391H0S 2 M/W Def. Grill Combi Timer/g Frozen Pizza 4 3 Fresh Vegetable Beverage Dish Warmer 5 Pasta Auto Defrost 6 Fish 7 9 Meat COMBI GRILL Defrost Power Kitchen Timer Clock q ur 1ho 10M e Poultry STOP/ CLEAR in 0 in 10m 1M 8 1m 10S START/ SPEEDY COOK w 1 r 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.
3) KOG-376T1S, KOG-396T1S 1. Display - Cooking time, power level, indicators and present time are displayed. 2. Clock - Used to set clock. 3. Start/Easy Cook - Used to start operation, also for easy start (each press adds 30 seconds microwave cooking time). 4. Stop/Clear - Used to stop the operation or to delete the cooking data. 5. Auto Cook - Used to cook using a program. 6. Knob - Turm to set the cooking menu and select a microwave power level. 7. Knob - Dial for setting time and weight.
4) KOG-371R0S, KOG-391R0S 1 M/W DEF. Grill Combi g Grill/Combi 3 Power/Def. 1. Dinner plate 2. Soup 3. Beverage 4. Fresh vegetable 2 Auto cook 4 Start/ Easy cook 5 Stop/Clear 6 7 Weight/ Time Clock 8 1. Display - Cooking time, power level, indicators and present time are displayed. 2. Grill/Combi - Used to cook GRILL or COMBI. 3. Power/Def - Used to set power level and DEFROST. 4. Auto cook - Used to cook using a program or to reheat. 5.
4) KOG-374R0S 1 Power/Def 3 Grill/Combi 2 Clock 7 Auto Cook 1. Dinner Plate 2. Soup 3. Beverage 4. Fresh Vegetable 4 ght/Time Wei 8 6 5 Stop/Clear Start/Easy Cook 1. Display - Cooking time, power level, indicators and present time are displayed. 2. Grill/Combi - Used to cook GRILL or COMBI. 3. Power/Def - Used to set power level and DEFROST. 4. Auto cook - Used to cook using a program or to reheat. 5.
4) KOG-375R0S 1 3 2 7 Power/Def Grill/Combi Clock 1. Dinner Plate 2. Soup 3. Beverage 4. Fresh Vegetable Auto Cook 4 ight/Time We 8 6 5 Stop/Clear Start/Easy Cook 1. Display - Cooking time, power level, indicators and present time are displayed. 2. Grill/Combi - Used to cook GRILL or COMBI. 3. Power/Def - Used to set power level and DEFROST. 4. Auto cook - Used to cook using a program or to reheat. 5.
5) KOG-373R0S, KOG-393R0S KOG-373R Auto cook 1. Dinner Plate 2. Soup 3. Beverage 4. Fresh Vegetable Grill/Combi Power/ Defrost 4 2 3 Clock 7 1 M/W DEF. Grill Combi g 6 Stop/ Clear 5 Start/ Easy cook 8 We ig h-Ti m e 1. Display - Cooking time, power level, indicators and present time are displayed. 2. Grill/Combi - Used to cook grill/combi. 3. Power/Def - Used to set power level. Used to defrost foods by weight or time. 4. Auto cook - Used to cook using a program or to reheat. 5.
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 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.
OPERATION 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 off. 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.
DISASSEMBLY AND ASSEMBLY Cautions to be observed when trouble shooting Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is completely safety 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.
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 a 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.
✔ 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. (1) KOG-371G0S/371H0S/371R0S REF.
1) Remove the gasket door from door plate. 2) Remove the barrier screen inner from door plate. 3) Remove the door frame from door plate. 4) Remove the stopper hinge top from door plate. 5) Remove the spring and the hook. 6) Remove the supporter barrier screen outer from door frame. 7) Remove the barrier screen outer from door frame. 8) Remove the above steps for reassembly. 4. Method to reduce the gap between the door seal and the oven front surface. 1) To reduce gap located on part ‘A’.
✔ 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) KOG-376T1S REF.
1) Remove the gasket door from door plate. 2) Remove a screw which secure the door plate and door frame. 3) Remove the door frame from door plate. 4) Remove the stopper hinge top from door plate. 5) Remove the spring and the hook. 6) Remove the supporter barrier screen outer from door frame. 7) Remove the barrier screen outer from door frame. 8) Remove the decorater door rrom door frame. 9) Reverse the above steps for reassembly. 4. Method to reduce the gap between the door seal and the oven front surface.
✔ 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) KOG-374R0S REF NO. PART CODE PART NAME DESCRIPTION A01 3512203850 FRAME DOOR ABS XR-401, H-2938 1 A02 3517005620 BARRIER-SCREEN*O TEMP GLASS T3.
(1) Remove the gasket door from door weld as. (2) Remove the barrier screen inner from weld as. (3) Remove the door frame from door weld as. (4) Remove the stopper hinge top from door weld as. (5) Remove the spring and the hook. (6) Remove the barrier screen outer from door frame. (7) Reverse the above steps for reassembly. 4. Method to reduce the gap between the door seal and the oven front surface.
✔ 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) (6) KOG-375R0S REF NO.
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.
✔ 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) (7) KOG-373R0S REF.
1) Remove the gasket door from door plate. 2) Remove the barrier screen inner from door plate. 3) Remove the door frame from door plate. 4) Remove the stopper hinge top from door plate. 5) Remove the spring and the hook. 6) Remove the supporter barrier screen outer from door frame. 7) Remove the barrier screen outer from door frame. 8) Remove the above steps for reassembly. 4. Method to reduce the gap between the door seal and the oven front surface. 1) To reduce gap located on part ‘A’.
✔ 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. (1) KOG-371G0S/371H0S REF.
✔ 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) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove the door open lever from the control panel. 3) Remove four screws which secure the PCB assembly to control panel.
✔ 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) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove the door open lever from the control panel. 3) Remove four screws which secure the PCB assembly to control panel.
✔ 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) (7) KOG-374R0S REF NO. PART CODE B01 3513404620 KNOB VOLUME PART NAME ABS XR-401, H-2938 DESCRIPTION Q’TY 1 B02 3511604510 DECORATOR C-PANEL STS T0.6 1 B03 3516003910 SPECIAL DOUBLE TAPE H0 SUNG 550M T0.
✔ 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) (8) KOG-375R0S REF NO. PART CODE B01 3513403800 KNOB VOLUME PART NAME ABS XR-401, H-2938 DESCRIPTION Q’TY 1 B02 3511604530 DECORATOR C-PANEL STS T0.6 1 B03 3516003960 SPECIAL DOUBLE TAPE H0 SUNG 550M T0.
✔ 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) (9) KOG-373R0S REF.
1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove the door open lever from the control panel. 3) Remove four screws which secure the PCB assembly to control panel. 4) Disconnect membrane tail from the connector of the PCB assembly. 5) Detach membrane from the control panel. 6) Remove door open button and button spring from the control panel. 7) Reverse the above steps for reassembly. 6. To remove high voltage capacitor.
8. To remove wind guide assembly. 1) Remove a screw for earthing. 2) Remove the noise filter from the wind guide. 3) Remove a 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.
10. To remove tray motor. (1) Remove the coupler in the cavity. (2) Turn the set upside down. (3) Cut the tray motor cover part from the base plate. (4) Remove the tray motor cover. (5) Remove a screw which secure the tray motor. (6) Remove the tray motor. (7) Reverse the above steps for reassembly except for securing the tray motor cover with screw. 11. To remove heater assmbly. (1) Remove the three nuts. (2) Remove the insulator heater assembly. (3) Reverse the above steps for reassembly.
✔ 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) 12. To remove heater parts. REF. NO PART CODE PART NAME DESCRIPTION C01 7392500008 NUT HEX 6N-2-5 SUS 1 C02 3515000600 SPACER INSULATOR *I C377BD 2 C03 3513301100 INSULATOR HEATER SPP T0.
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.
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) KOG-374R/375R0S (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.
TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check earthing 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.
TROUBLE SHOOTING GUIDE CONDITION Outlet has proper voltage Fuse does not blow.
(TROUBLE 3) No microwave oscillation even though fan motor rotates.
(TROUBLE 4) The following visual conditions inditions 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. A distinct change in the display are not on when they numbers is the display. 3. One or more digits in the display are not on when they should be. 4.
MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT Microwave output power can be checked by indirectly mmeasuring 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 100 ± 5cc of potable water. 2.
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. Care should be taken not to place the eyes in direct line with the source of microwave energy. 5.
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. High voltage transformer 1) Remove connections from the transformer terminals and check continuity. 2) Normal readings should be as follows : Secondary winding .
WIRING DIAGRAM (1) KOG-371G/H/R0S, KOG-391G/H/R0S, KOG-376T1S, KOG-374R/375R0S, KOG-373R/393R0S 52
(2) KOG-396T1S 53
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: 230V / Frequency: 50Hz Terminal Voltage LOAD NO LOAD 4-7 AC 25.8 V AC 28.4 V NOTE 1. Refer to Ciruit Diagram (point 4). 2. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage. 3.
Mesurement point 55
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 A B RELAY 2 ON -5VDC GND RELAY 2 OFF GND -12VDC STATE 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. ✻ Cause : RELAY 1 does not operate.
2. P.C.B.
✔ 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.
✔ 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.
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 : 230V/Frequency : 50Hz Terminal Voltage LOAD NO LOAD 8-9 AC 23V AC 27.7V 6-7 AC 2.27V AC 2.79V NOTE 1. Refer to Circuit Diagram (point 4). 2. Secondary side voltage of the low voltage trasformer changes in proportion to fluctuation of power source voltage. 3.
Mesurement point 61
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 A B RELAY 2 ON -5VDC GND RELAY 2 OFF GND -24VDC STATE 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. ✻ Cause : RELAY 1 does not operate.
2. P.C.B.
✔ 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.
✔ 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.
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: 230V / Frequency: 50Hz Terminal Voltage LOAD NO LOAD 4-7 AC 25.8 V AC 28.4 V NOTE 1. Refer to Ciruit Diagram (point 4). 2. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage. 3.
Mesurement point 67
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 A B RELAY 2 ON -5VDC GND RELAY 2 OFF GND -12VDC STATE 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. ✻ Cause : RELAY 1 does not operate.
2. P.C.B.
✔ 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 (1) KOG-371R0S NO NAME SYMBOL SPECIFICATION PART CODE Q’TY REMARK 1 PCB MAIN M160 82X139.
✔ 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) (2) KOG-391R0S NO NAME SYMBOL SPECIFICATION PART CODE Q’TY REMARK 1 PCB MAIN M160 82X139.
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 : 230V/Frequency : 50Hz Terminal Voltage 4-7 LOAD AC 25.8 V NO LOAD AC 28.4 V NOTE : 1. Refer to Circuit Diagram (point 4). 2. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage. 3.
Mesurement point 73
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 A B RELAY 2 ON -5VDC GND RELAY 2 OFF GND -12VDC STATE 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. ✻ Cause : RELAY 1 does not operate.
2. P.C.B.
✔ 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 (1) KOG-374R0S/375R0S NAME NAME SYMBOL SPECIFICATION 1 PCB MAIN M166 82 X 146.
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 : 230V/Frequency : 50Hz Terminal Voltage 4-7 LOAD AC 25.8 V NO LOAD AC 28.4 V NOTE : 1. Refer to Circuit Diagram (point 4). 2. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage. 3.
Mesurement point 78
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 A B RELAY 2 ON -5VDC GND RELAY 2 OFF GND -12VDC STATE 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. ✻ Cause : RELAY 1 does not operate.
2. P.C.B.
✔ 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.
✔ 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.
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3.
✔ 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.
✔ 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.
✔ 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.
✔ 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.
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3.
✔ 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.
✔ 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.
(2) KOG-396T1S 91
✔ 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) KOG-396T1S NO.
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3.
✔ 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) KOG-374R0S NO.
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3.
✔ 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) KOG-375R0S NO.
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3.
✔ 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.
✔ 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.
✔ 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.
✔ 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.
DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” E-MAIL : G7F00E@web.dwe.co.kr FAX: 02) 360-8184 TEL: 02) 360-8179~8180 PRINTED DATE: Dec.