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Daewoo KOG-361Q, Service Manual, Page: 1 / 58

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Service Manual

Microwave Oven

KOG-361Q, KOG-362Q, KOG-364Q
KOG-381Q, KOG-382Q, KOG-384Q
KOG-388Q

DAEWOO ELECTRONICS CO., LTD.

Summary of Contents for KOG-361Q

Page 1: ...Service Manual Microwave Oven KOG 361Q KOG 362Q KOG 364Q KOG 381Q KOG 382Q KOG 384Q KOG 388Q DAEWOO ELECTRONICS CO LTD...

Page 2: ...terlock monitor door seal and microwave gerneration and transmission systems shall be repaired or adjusted by proce dures described in this manual before the oven is released to the owner e A micrewav...

Page 3: ...ed oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven a inform the manufacturer importer or assembler b repair the unit at no cost to the owner...

Page 4: ...MENSIONS W x D x H NET WEIGHT TIMER FUNCTION SELECTIONS MICROWAVE POWER LEVELS KOG 361Q 362Q 364Q KOG 381Q 382Q 384Q 388Q 230V 50Hz SINGLE PHASE WITH EARTHING 1200W 1350W 1050W 1050W 2200W 2350W 800W...

Page 5: ...ht can pass through but not the microwaves 10 Time set pad Used to set the cooking time and the present time 11 Display Cooking time power level pre sent time are displayed 12 Speedy cook Touch to set...

Page 6: ...and TV sets Poor television reception and radio interference may result if the oven is located close to a TV Radio or antenna feeder and so on Position the oven as far from them as possible Away from...

Page 7: ...me a pad is touched a BEEP will sound to acknowledge the touch The oven automatically cook on full power unless set to a lower power level The display will show 0 when the oven is plugged in Time cloc...

Page 8: ...ng and the colon starts blinking If you selected 12 hour clock system this digital clock allows you to set from 1 00 to 12 59 If you selected 24 hour clock system this digital clock allows you to set...

Page 9: ...er pads for the defrosting weight you want The display will show the num bers you pressed in the order you touched 5 0 0 3 Touch START pad WEIGHT DEFROSTING begins The defrosting time is automatically...

Page 10: ...sting time you want The display will show the num bers you pressed in the order you touched 2 7 1 0 NOTE Your oven can be programmed for 59 minutes 99 sec onds 59 99 4 Touch START pad When you touch S...

Page 11: ...ar 3 beeps START 2 Touch the number pad for the power level you want The display will show what you touched This example shows power level 3 3 NOTE If steps 1 and 2 are omitted the oven will cook at f...

Page 12: ...ILL indicator lights and 0 is displayed GRILL 3 Touch START pad When you touch START pad the GRILL indicator starts blinking to show the oven is cooking The display count down the time to show how muc...

Page 13: ...eatedly changes category as shown in the chart below COMBI 3 Touch START pad When you touch START pad the COMBI indicator starts blinking to show the oven is cooking The display count down the time to...

Page 14: ...n light turns on The AUTO START indicator goes off and the next stage indicator begins to blink When the cooking is completed you will hear 3 beeps The oven turns off and the present time appears in t...

Page 15: ...100 full power by simply touching the SPEEDY COOK pad By repeatedly touching the SPEEDY COOK pad you can also extend reheating time to 5 minutes by 30 seconds DO THIS THIS HAPPENS 1 Touch CLOCK A STAR...

Page 16: ...y changed into cooking time of quantity and the oven starts cooking FROZEN PIZZA 1 Touch BEVERAGE pad When you touch BEVERAGE pad 1 is displayed After 1 5 seconds the display changed into cooking time...

Page 17: ...king 1 Touch DINNER PLATE pad When you touch DINNER PLATE pad 300 is displayed After the 1 5 seconds the dis play changed into cooking time of quantity and the oven starts cooking DINNER PLATE 1 Touch...

Page 18: ...TA TO pad 1 is displayed After the 1 5 seconds the dis play changed into cooking time of quantity and the oven starts cooking BAKED POTATO BAKED POTATO 160 180g ea 1 NO ea Touch BAKED POTATO once 2 NO...

Page 19: ...lights To cancel press STOP CLEAR for 3 seconds LOCK indicator goes off TO STOP THE OVEN WHILE THE OVEN IS OPERATING 1 Press STOP CLEAR pad You can restart the oven by touching START pad Touch STOP C...

Page 20: ...door is closed the hook locks the oven door If the door is not closed properly the oven will not operate Whem the door is closed the hook pushes the button of the micro switch Then the button of the p...

Page 21: ...y interlock switch The movement of the switch button should exceed 1 2mm measured at the top of the button 3 Adjustment steps a Loosen the two mounting screws b Adjust interlock switch assembly positi...

Page 22: ...grounded properly vefore before begining repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stops electric charge remains in the hig...

Page 23: ...screws F40 which secure the top hinge seoppr F37 2 Remove the door assembly F00 from the top plate of cavity 3 Reverse the above for reassembly 3 To remove door parts 22 DISASSEMBLY AND ASSEMBLY NOTE...

Page 24: ...e door to con tact the door seal to oven front sur face 3 Tighten two screws 2 To reduce gap located on part B 1 Loosen three screws in under hinge stopper and then the door to contact the door seal t...

Page 25: ...e door open lever B05 from the control panel B02 3 Remove three screws B04 which secure the P C B ass y B03 4 Remove the P C B ass y B03 from the control panel B02 5 Remove the door open button B07 an...

Page 26: ...nd capacitor holder F14 2 Remove the capacitor holder F14 with capacitor F15 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove three screws F07 which...

Page 27: ...r reassembly 9 To remove thransformer 1 Remove the four screws F21 holding the H V tramsformer F20 2 Remove the transformer F20 3 Reverse the above steps for reassembly 26 CAUTION Never install the ma...

Page 28: ...er 2 3 Remove the two screws 5 4 Reverse the above steps for reassembly 27 1 2 3 4 5 6 7 INSULATOR HEATER HEATER SCREW MACHINE NUT HEX SCREW MACHINE SPACER INSULATOR I NUT HEX 3513301100 3512801700 70...

Page 29: ...ssembly 28 TROUBLE SHOOTING GUIDE 1 Incomplete segments A Segments missing B Partical segments missing C Digit flickering other than normal fluores cent slight flickering D 0 does not display when pow...

Page 30: ...membrane keyboard for the following keyboard check procedure Condition Display does not show programming at all even if keyboard is touched Normal Malfunction of touch control circuitry of control box...

Page 31: ...NG BOTTLE pad Between A and J 6 6 pad Between B and F 7 1 pad Between B and G 8 SOUP pad Between B and H 9 GRILL pad Between B and I 10 COMBI pad Between B and J 11 7 pad Between C and F 12 2 pad Betw...

Page 32: ...terlock Switch contact with door partially open until interlock monitor switch contact close Continuity Shorted con tacts of primary inter lock switch Replace 15A fuse Defective high voltage trans for...

Page 33: ...supply cord Replace Normal Defective touch control circuit Replace Display do not shown countdown Malfunction of secondary interlock switch Outlet has proper voltage Fuse does not open Check Result Ca...

Page 34: ...f connecting wire of magnetron Condition No microwave oscillation Continuity Replace Check the isolation of filament winding of high voltage transformer No Good Defective high voltage transformer Repl...

Page 35: ...volts Descrease in power source voltage Normal Replace Check the timing periods of the RELAY 1 coil Abnormal NOTE 3 Defective touch control circuit Replace depending on the result of output test Norma...

Page 36: ...wave generator is operatng at full power The filament heat up time for magnetrons is not included 6 The initial and final water temperatures are selected so that the maximum difference betwen the ambi...

Page 37: ...assembled oven with door normally closed must be less than 4mW cm2 When measuring the leakage always use the 5cm space cone with probe Hold the probe per pendicular to the cabinet door Place the spac...

Page 38: ...37 WIRING DIAGRAM GERMANY...

Page 39: ...38 WIRING DIAGRAM...

Page 40: ...tron by blowing the air coming form the intake on the rear plate hold 3 The oven lamp light the inside of the oven 4 Indicator light turns on to indicate function operation Cooking time starts count d...

Page 41: ...1 in order to vary the output power of the microwave oven from power level 1 to HI 100 power One complete ON and OFF cycle of the RELAY 1 is 29 seconds The relation between indications on the control...

Page 42: ...the door is opened the interlock monitor switch contacts close and creats the short circuit 6 If the contacts of primary interlock switch malfunction the 15A fuse blows open due to the large current s...

Page 43: ...pprox 110 10 Filament winding Approx 0 Primary winding Approx 0 2 High voltage capacitor A Check continuity of capacitor with meter on the highest OHM scale B A normal capacitor will show continuity f...

Page 44: ...ondary interlock switches check Make circuits like Fig a Fig b Fig c for tests 43 SAFETY INTERLOCK CONTINUITY TEST 1 In case of interlock monitor check Lamp on or zero resistance ohmmeter Fig a Condit...

Page 45: ...of power source voltage NOTE 2 The allowable tolerance of the secondary voltage is within 5 of norminal voltage NOTE Each measure point must be measured with GND points 6 7 24V 30V 8 10 2 4V 2 5V Volt...

Page 46: ...lay COMBI LOCK don t come on GRID1 G1 21 30 GRILL M W don t come on GRID2 G2 17 29 WEIGHT DEFROST NO CUPS don t come on GRID3 G3 9 26 TIME DEFROST doesn t come on GRID4 G4 10 28 AUTO START g don t com...

Page 47: ...Fig 6 Measurement Point 46...

Page 48: ...is opened during operation the Count down timer does not stop CHECK METHOD 47 POINT A STAGE RELAY 2 ON 24VDC RELAY 2 OFF GND POINT A B STAGE RELAY 1 ON 5VDC 24VDC RELAY 1 OFF GND GND POINT A B STAGE 1...

Page 49: ...st check resistor R11 R17 7 When there is not grill heat When touching START pad oven lamp turns on Fan Motor and turntable rotate and cook indicator in display comes on Cause RELAY 4 does not operate...

Page 50: ...2 COMPONENT INFORMATION 1 Transistor 2 Diode and Zener Diode 49...

Page 51: ...3 PRINTED CIRCUITS BOARD 50...

Page 52: ...4 P C B CIRCUIT DIAGRAM 51...

Page 53: ...0Y TRANSISTOR KTA1270Y RA1 RA 87X104J RESISTOR ARRAY RGLD6 x 104J C4 CCXF1H103Z CAPACITOR CERAMIC HIKF 50V 0 01uF Z C1 3 CBXF1H104Z CAPACITOR CERAMIC HIKF 50V 0 1uF Z EC5 CEXF1H471V CAPACITOR ELECTROL...

Page 54: ...13100700 HOOK POM 1 A08 3515101300 SPRING HOOK PW1 1 REF No PART CODE PART NAME DESCRIPTION Q TY REMARK 3511706402 KOR 8115OS ONLY KOG 381Q 3511706422 DOOR ASSEMBLY KOR 8125OS 1 ONLY KOG 382Q 35117064...

Page 55: ...362Q 3516903630 ONLY KOG 364Q 2 Control Panel Assembly 54 KOG 36XX KOG 38XX REF No PART CODE PART NAME DESCRIPTION Q TY REMARK PKCPSWTC00 KOG 381QOS ONLY KOG 381Q PKCPSWTD00 CONTROL PANEL AS KOG 382QO...

Page 56: ...55...

Page 57: ...x 8 MFZN 2 F12 7172400811 SCREW TAPTITE TT2 TRS 4 x 8 MFZN 2 F13 3511402500 COVER B SBHG T0 8 1 F14 3963512100 MOTOR SHADED POLE OEM 10C2 1 F15 3511800300 FAN PP 30 GLASS 1 F16 7172400811 SCREW TAPTIT...

Page 58: ...TURE MAIL PP 2 F43 3513301400 INSULATOR HEATER AS KOG 3615OS 1 ONLY KOG 36XX 3513301410 KOG 3815OS 1 ONLY KOG 38XX F44 3514700900 ROLLER TEFLON 3 F45 3512509200 GUIDE ROLLER PP 1 F46 3517203600 TRAY G...

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