Related Manuals for Daewoo KOG-37BG0S
Summary of Contents for Daewoo KOG-37BG0S
- Page 1 Service Manual Microwave Oven Model : KOG-37BG0S KOG-39BG0S DAEWOO ELECTRONICS CO., LTD...
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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 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. -
Page 4: Specifications
SPECIFICATIONS MODEL KOG-37BG KOG-39BG POWER SUPPLY 230V-50Hz, SINGLE PHASE WITH EARTHING POWER MICROWAVE 1200W 1350W CONSUMPTION GRILL 1050W 1050W COMBINATION 2200W 2350W MICROWAVE ENERGY OUTPUT 800W 900W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 465x279x356mm (18.3x11.0x14.0 in.) 495x294x384mm (19.5x11.6x15.1 in.) CAVITY DIMENSIONS (W X H X D) 290x220x306mm (11.4x8.7x12.0 in.) -
Page 5: Feature Diagram
2. FEATURE DIAGRAM 1. Door seal - Door seal maintains the microwave energy 9. Roller guide - This must always be used for cooking within the oven cavity and prevents microwave together with the glass cooking tray. leakage. 10. Glass cooking tray - Made of special heat resistant 2. -
Page 6: Control Panel
3. FEATURES DIAGRAM (CONTINUED) Def. Grill Combi Timer/g 1. BREAD 2. SOUP Auto 3. BAKED POTATO Cook 4. FRESH VEGETABLE 5. FROZEN VEGETABLE Pasta Frozen Pizza Beverage Auto Defrost Fish Poultry Meat COMBI GRILL Defrost Kitchen Power Clock Timer STOP/ START/ CLEAR SPEEDY COOK... -
Page 7: Installation
• This appliance is supplied with cable of special type, which, if damaged, must be repaired with cable of same type. Such a cable be purchased from DAEWOO and must be installed by a Qualified Person. 6. Examine the oven after unpacking for any damage such as: A misaligned door, broken door or a dent in cavity. -
Page 8: Operation And Functions
OPERATIONS AND FUNCTIONS 1. Connect the mains lead to an electrical socket-outlet. 2. After placing the food in a suitable utensil, open the oven door and put it on the glass turntable, Glass turntable must always be in place during cooking. 3. -
Page 9: Disassembly And Assembly
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. - Page 10 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 11 3. To remove door parts DOOR ASSEMBLY KOG-37BG0S: 3511710330 KOG-39BG0S: 3511710710 (1) KOG-37BG0S REF.NO PART CODE PART NAME DESCRIPTION REMARK 3512202070 FRAME DOOR ABS XR-401 H-2938 3517003050 BARRIER-SCREEN*O ACRYL 3515304610 SUPPORTER BARR-S*O 3515204100 STOPPER HINGE *T AS KOR-6315OS 3511705500 DOOR WELD AS...
- Page 12 (1) Remove the gasket door from door weld as. (2) Remove the barrier screen inner from door 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 supporter barrier screen outer from door frame.
- Page 13 5. To remove control panel parts. CONTROL-PANEL ASSEMBLY KOG-37BG0S : PKCPS WBHOO KOG-39BG0S : PKCPS WBKOO (1) KOG-37BG0S REF.NO PART CODE PART NAME DESCRIPTION REMARK 3518521630 SWITCH MEMBRANE KOG-37BG0S 3516710770 CONTROL-PANEL ABS XR-401 H-2938 PKMPMSBTOO PCB MAIN AS KOG-37BG0S 7122401211...
- Page 14 (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.
- Page 15 8. To remove fan motor assembly. (1) Remove a screws 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.
- Page 16 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.
- Page 17 12. To remove heater parts. REF.NO PART CODE PART NAME DESCRIPTION REMARK 7392500008 NUT HEX 6N-2-5 SUS 3515000600 SPACER INSULATOR *I C3771BD 3513301100 INSULATOR HEATER SPP T0.8 3512803400 HEATER 230V 1000W 1R67994001 7002500613 SCREW MACHINE TRS 5X6 MFCR 7002400413 SCREW MACHINE TRS 4X4 MFCR...
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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. -
Page 19: Trouble Shooting Guide
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 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 Outlet has Check continuity of magnetron Continuity magnetron proper voltage Fuse does not Replace blow. Defective line Check continuity of Continuity filter board noise filter board Replace Open power Check continuity of Continuity power supply cord supply cord Replace...
- Page 21 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY Check continuity of high microwave Continuity voltage fuse oscillation Replace high voltage fuse Continuity Replace Check continuity if high Defective high voltage capacitor terminals voltage with wires removed transformer Continuity in...
- Page 22 (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.
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Page 23: Measurement And Test
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 ±... -
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 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 AC 12.6 V AC 14.7 V NOTE 1. - Page 28 Mesurement 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...
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Page 30: Pcb Circuit Diagram
2. P.C.B. CIRCUIT DIAGRAM... -
Page 31: Location No
3. P.C.B. LOCATION NO (1) KOG-37BG0S NAME SYMBOL SPECIFICATION PART CODE Q'TY BUZZER BM-20K 3515600100 C ARRAY 70(6) 102 M 50V CN6XB-102M CAPACITOR ELEC 16V RSS 100µF CEXF1C101V CAPACITOR ELEC 16V RSS 1000µF CEXF1C102V CONNECTOR WAFER YW396-02AV 3519150520 CONNECTOR WAFER... - Page 32 (2) KOG-39BG0S NAME SYMBOL SPECIFICATION PART CODE Q'TY BUZZER BM-20K 3515600100 C ARRAY 70(6) 102 M 50V CN6XB-102M CAPACITOR ELEC 16V RSS 100µF CEXF1C101V CAPACITOR ELEC 16V RSS 1000µF CEXF1C102V CONNECTOR WAFER YW396-02AV 3519150520 CONNECTOR WAFER YW396-05AV 3519150510 CONNECTOR WAFER FCZ254-11 441M367160 DIODE RECTIFY...
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Page 33: 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 34 (1) KOG-37BG0S REF NO PART CODE PART NAME DESCRIPTION Q'TY DOOR AS Refer to disasembly and assembly CONTROL PANEL AS Refer to disasembly and assembly 3510801310 CABINET PCM T0.5 GE 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516109010 CAVITY WELD AS...
- Page 35 REF NO PART CODE PART NAME DESCRIPTION Q'TY 3512100900 FOOT PP DASF-130 7272400811 TAPTITE SCREW TT3 TRS 4X8 MFZN 3515201101 STOPPER HINGE *U SCP-1 T2.5 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 4415A66910 SW MICRO VP-531A-OF/SZM-V16-FA-61 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 3513702600 LEVER LOCK 3513811700...
- Page 36 (2) KOG-39BG0S REF NO PART CODE PART NAME DESCRIPTION Q'TY DOOR AS Refer to disasembly and assembly CONTROL PANEL AS Refer to disasembly and assembly 3510801310 CABINET PCM T0.5 GE 7112401011 SCREW TAPPING T1 TRS 4*10 MFZN 3516109010 CAVITY WELD AS CAVITY WELD AS 3516109610 CAVITY JOINT AS...
- Page 37 REF NO PART CODE PART NAME DESCRIPTION Q'TY 3512100900 FOOT PP DASF-130 7272400811 TAPTITE SCREW TT3 TRS 4X8 MFZN 3515201101 STOPPER HINGE *U SCP-1 T2.5 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 4415A66910 SW MICRO VP-531A-OF/SZM-V16-FA-61 4415A17352 SW MICRO VP-533A-OF SPNO #187 200G 3513702600 LEVER LOCK 3513811700...
- Page 38 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) 590-8184 TEL: 02) 360-8179~8180 PRINTED DATE: Oct. 1999...