Daewoo KOR-612L0S Service Manual Download Page 1

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Service Manual

Microwave Oven

Model : KOR-612L0S

DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEPT.

✔

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).

Summary of Contents for KOR-612L0S

Page 1: ...LTD OVERSEASSERVICEDEPT 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 PP...

Page 2: ...he interlock monitor door seal and microwave gernera tion and transmission systems shall be repaired or adjusted by procedures described in this manual before the oven is released to the owner e A mic...

Page 3: ...SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL 2 For Safe Service Procedures 1 If the oven is operative prior to servicing a microwave emission check should be performed prior to servi...

Page 4: ...NSUMPTION 1200W MICROWAVE OUTPUT POWER 800W IEC 705 FREQUENCY 2450MHZ OUTSIDE DIMENSIONS WXHXD 465X274X354mm CAVITY DIMENSIONS WXHXD 290X200X290mm NET WEIGHT APPROX 13 5KG TIMER 59min 99sec POWER SELE...

Page 5: ...the tray 8 Roller guide Supports the glass cooking tray 9 Door screen Allows viewing of food The screen is designed so that light can pass through but not the microwaves 0 Time set pad Used to set the...

Page 6: ...nd 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 h...

Page 7: ...l panel The oven will automati cally shut off To restart the oven close the door and then touch START Each time a pad is touched a BEEP will sound to acknowledge the touch The oven automatically cook...

Page 8: ...op blinking 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 yo...

Page 9: ...er pads for the defrosting weight you want The display will show the numbers 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 numbers you pressed in the order you touched 2 7 1 0 NOTE Your oven can be programmed for 59 minutes 99 seconds 59 99 4 Touch START pad When you touch STA...

Page 11: ...starts blinking to show the oven is cooking The display counts down the time to show how much cooking time is left When the cooking time ends you will hear 3 beeps START 2 Touch number pads for the co...

Page 12: ...2 indicator lights and P 80 is displayed The display will show what you touched 3 Touch the number pads for the cooking time you want in the second stage The display will show the numbers you pressed...

Page 13: ...0 is displayed And the g indicator starts blinking AUTO DEFROST 2 Touch number pads for the defrosting weight you want The display will show the numbers you pressed in the order you touched 5 0 0 HIG...

Page 14: ...rs come on to confirm the power levels selected The WEIGHT DEFROST indicator starts blinking to show you that the oven is in WEIGHT DEFROST mode The display counts down the time remain ing in WEIGHT D...

Page 15: ...igins Operating and the oven 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 th...

Page 16: ...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 17: ...TO When you touch BAKED POTATO pad 1 is displayed After the 1 5 seconds the display changed into cooking time of quan tity and the oven starts cooking NBAKED POTATO N 160 180g ea 1 NO ea Touch BAKED P...

Page 18: ...VERAGE pad 1 is displayed After 1 5 seconds the display changed into cooking time of quan tity and the oven starts cooking BEVERAGE DO THIS THIS HAPPENS 1 Touch FRESH VEGETABLE pad When you touch FRES...

Page 19: ...r 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...

Page 20: ...he door is closed the hook locks the oven door If the door is not closed properly the oven will not oper ate When the door is closed the hook pushes the button of the micro switch Then the button of t...

Page 21: ...Adjustment steps a Loosen the two mounting screws b Adjust interliock switch assembly position c Confirm the gap 1 2mm described above d Make sure that push lever moves smoothly adjustments is comple...

Page 22: ...nds Heating time is measured while the microwave 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...

Page 23: ...fully 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 perpendicu lar to the cabinet door Place the...

Page 24: ...r starts rotating and cools the magnetron by blowing the air coming from 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...

Page 25: ...Y 1 in order to vary the output power of the microwave oven from power level low to HI 100 power One complete ON and OFF cycle of the RELAY 1 is 29 seconds The relation between indications on the cont...

Page 26: ...e display stops counting down 3 Fan motor and turn table stop rotating 4 The oven lamp turns off 5 As soon as the door is opened the interlock monitor switch contacts close and creats the short circui...

Page 27: ...to makes sure it is grounded properly before begining repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stops and elec tric charge...

Page 28: ...abinet back 2 To remove door assembly 1 Remove two screws F40 which secure the top hinge stopper F37 2 Remove the door assembly A00 from the top plate of cavity 3 Reverse the above for reassembly NOTE...

Page 29: ...oor to con tact the door seal to oven front surface 2 Tighten two screws 2 To reduce gap located on part B 1 Loosen three screws on under hinge stopper and then the door to contact the door seal to ov...

Page 30: ...the 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...

Page 31: ...and the capacitor holder F14 2 Remove the capacitor holder F14 with H V capacitor F15 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove three screws...

Page 32: ...for reassembly 9 To remove transformer 1 Remove the four screws F18 holding the H V trans former F17 2 Remove the transformer F17 3 Reverse the above steps for reassembly CAUTION Never install the ma...

Page 33: ...ch assembly TROUBLE SHOOTING GUIDE 1 Incomplete segments A Segments missing B Partical segments missing C Digit flickering other thay normal fluorescent slight flickering D 0 does not display when pow...

Page 34: ...yboard failure please check for the continuity of each wire harness between the membrane keyboard and control box assembly Fig 4 Condition Check Result Cause Remedy Display does not show pro gramming...

Page 35: ...ween A and F 2 0 pad Between A and G 3 LOW pad Between A and H 4 SPEEDY COOK pad Between A and I 5 FEEDING BOTTLE pad Between A and J 6 6 pad Between B and F 7 1 pad Between B and G 8 M LOW pad Betwee...

Page 36: ...nterlock Switch contact with door partially open until interlock monitor switch contact close Continuity Shorted contacts of primary inter lock switch Replace 12A fuse Defective high voltage transform...

Page 37: ...ord Replace Normal Defective touch control circuit Replace Display do not show countdown Malfunction of secondary interlock switch Outlet has proper voltage Fuse does not open Check Result Cause Remed...

Page 38: ...onnecting wire of magnetron Condition No microwave oscillation Continuity Replace Check the isola tion of filament wind ing of high voltage transformer No Good Defective high voltage transformer Repla...

Page 39: ...e voltage Normal Replace Check the timing periods of the RELAY 1 coil Abnormal NOTE 3 Defective touch control circuit Replace depend ing on the result of output test Normal Aging change of magnetron N...

Page 40: ...pprox 110 0 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...

Page 41: ...ry interlock switches check Make circuits like Fig a Fig b Fig c for tests 40 SAFETY INTERLOCK CONTINUITY TEST 1 In case of interlock monitor check Lamp on or zero resistance ohmmeter Fig a Condition...

Page 42: ...1 0 Replace R21 R22 EC5 NO LOAD REMARK NO CHECK POINT REMARK 1 IC1 PIN 6 10 11 5VDC 2 IC1 PIN 1 30VDC 3 IC1 PIN 22 4 IC1 PIN 8 OR 9 6 7 24V 30V NO LOAD 41 PRINTED CIRCUIT BOARD NOTE 1 Secondary side v...

Page 43: ...sn t come on from G1 to G5 SEGMENT d 4 39 SEGMENT b doesn t come on from G1 to G5 SEGMENT e 3 40 SEGMENT c doesn t come on from G1 to G5 SEGMENT f 2 41 SEGMENT d doesn t come on from G1 to G5 SEGMENT...

Page 44: ...Fig 6 Measurement Point 43...

Page 45: ...is opened during operation the Count down timer does not stop CHECK METHOD CHECK METHOD REMEDY NO 1 Check the stage ON OFF of the secondary Replace secondary Interlock switch by resistance measurement...

Page 46: ...5 When the digital clock does not operate properly POINT WAVEFORM A 45 If clock does not keep exact time you must check resistor R21 R34 T 20ms...

Page 47: ...46 2 P C B CIRCUIT DIAGRAM L type...

Page 48: ...47 3 COMPONENT INFORMATION 1 Transistor 2 Diode and Zener Diode...

Page 49: ...48 4 PRINTED CIRCUITS BOARD...

Page 50: ...11Q LVT 5EPV041354 TRANS POWER DMR 604FS RY 15SC0101107 RELAY G5J 1 TP M24V RY2 5SC0101109 S W RELAY G5B 1 1C 1PDC 24V SJ1 J1 14 85801052GY WIRE COPPER 1 0 52 TIN COATING CR1 5PKBR40MKS RESONATOR CERA...

Page 51: ...5OS 1 A05 3517002800 BARRIER SCREEN I POLYESTER T0 1 1 A06 3512300200 GASKET DOOR PP 1 A07 3513100700 HOOK POM 1 A08 3515101300 SPRING HOOK PW1 1 1 Door Assembly DOOR ASSEMBLY 3511706020 Caution In th...

Page 52: ...B05 3513701400 LEVER DOOR OPEN POM 1 B06 441G430171 SPRING DOOR BUTTON HSWR 1 B07 3516903620 BUTTON DOOR OPEN ABS 1 CONTROL PANEL ASSEMBLY PKCPSWCR00 2 Control Panel Assembly Caution In this Service M...

Page 53: ...52 EXPLODED VIEW...

Page 54: ...vice 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 infor...

Page 55: ...ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 590 6291 TEL 02 360 7114 590 6151 5 http www dwe daewoo co kr PRINTED D...

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