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Service Manual

Microwave Oven

MAR. 2000

DAEWOO ELECTRONICS CO., LTD

http : //svc.dwe.co.kr

MODEL :

KOR-633R0S
KOR-863R0S

S/M No.:R633R0S001

Содержание KOR-633R0S

Страница 1: ...Service Manual Microwave Oven MAR 2000 DAEWOO ELECTRONICS CO LTD http svc dwe co kr MODEL KOR 633R0S KOR 863R0S S M No R633R0S001 ...

Страница 2: ...low 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 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 c Before turning on po...

Страница 3: ...ified 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 c attempt to ascertain the cause of the excessive leakage d tell the owner of the unit not to use the unit until the oven has been brought into compliance 3 If the oven operates with the door open ...

Страница 4: ...PUT 800W 900W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 465 x 279 x 365 mm 18 3 x 11 0 x 14 4 in 495 x 294 x 392 mm 19 5 x 11 6 x 15 4 in CAVITY DIMENSIONS W X H X D 290 x 220 x 306 mm 11 4 x 8 7 x 12 0 in 320 x 244 x 338 mm 12 6 x 9 6 x 13 3 in NET WEIGHT APPROX 13Kg 28 7 lbs APPROX 15Kg 33 1 lbs TIMER 59min 00 sec FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 5 LEVELS CAVITY VOLU...

Страница 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION KOR 633R KOR 863R 365 392 279 294 465 495 ...

Страница 6: ...perating 4 Oven cavity 5 Door seal Door seal surfaces prevent microwave escaping from the oven cavity 6 Glass cooking tray Made of special heat resistant glass The tray can be easily removed for cleaning Make sure it is correctly positioned indentation before operating Place food in a suitable container dish on the tray 7 Roller guide Supports the glass cooking tray 8 Coupler This fits over the sh...

Страница 7: ...level 4 Clock Used to set clock 5 Display Cooking time power level indicators and present time are displayed 6 Stop Clear Used to stop the oven operation or to erase all entries 7 Strat Easy cook Used to start the oven operation and also increase the reheat time by 30 seconds 8 Dial Knob Used to set the time and weight EXTERNAL VIEW 8 7 6 5 4 3 2 1 ...

Страница 8: ...ial type which if samaged must be repaired with cable of same type Such a cable can 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 If any of the above are visible DO NOT INSTALL and notify dealer immediately 7 Do not operate the oven if it is colder than room temperatur...

Страница 9: ...nt time when the cooking time ends 10 When the Stop Clear button is touched during the oven operation the oven stops cooking and all information retained To erase all information except the present time touch the Stop Clear button once more If the oven door is opened during the oven operation all information is retained 11 If the Start button is touched and the oven does not operate check the area...

Страница 10: ...pair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replacing or checking parts short between oven chassis and the negative high terminal of the high voltage capacitor by using a properly insulated screwdriver to discharge 4 When the 12A fuse is blown out due to t...

Страница 11: ...e cabinet backward 2 To remove door assembly 1 Remove screws which secure the stopper hinge top 2 Remove the door assembly from top plate of cavity 3 Reverse the above for reassembly After replacing the door assembly perform a check of correct alignment with the hinge and cavity front plate NOTE ...

Страница 12: ...T0 1 1 A06 3512300200 GASKET DOOR PP 1 A07 3513100700 HOOK POM 1 A08 3515101300 SPRING HOOK PW1 1 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK A01 3512204170 FRAME DOOR ABS SG 175 1 A02 3517005740 BARRIER SCREEN O ACRYL 1 A03 3515204100 STOPPER HINGE T AS KOR 63150S 1 A04 3511705620 DOOR WELD AS KOR 81250S 1 A05 3517002900 BARRIER SCREEN I POLYESTER T0 1 1 A06 3512300400 GASKET DOOR PP 1 A07...

Страница 13: ...e 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 Loosen two screws on stopper hinge top and then push the door to contact the door seal to oven front surface Tighten a screw 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...

Страница 14: ...W MFZN 4 B08 3514321350 PCB MAIN AS KOR 633R0S 1 B09 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK B01 3515501540 WINDOW DISPLAY PMMA 1 B02 3516723730 CONTROL PANEL ABS SG 175 1 B03 3516907530 BUTTON FUNCTION A ABS SG 175 1 B04 3516907540 BUTTON FUNCTION B ABS SG 175 1 B05 3513405240 KNOB VOLUME ABS SG 175 1 B06 3514321430 PCB SUB AS KOR 633R0S 1 B...

Страница 15: ...citor 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 High voltage circuit wiring 7 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly DISASSEMBLY AND ASSEMBLY Never install the mag...

Страница 16: ...raw 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 reasembly 9 To remove H V transformert 1 Remove four screws holding the H V transformer 2 Remove the H V transformer 3 Reverse the above steps for reassembly DISASSEMBLY AND ASSEMBLY ...

Страница 17: ...tch to bring it under NO condition and presses the button of the secondary interlock switch to bring it under ON condition 3 Adjustment steps a Loosen the one mounting screw b Adjust interlock switch assembly position c Make sure that lock lever moves smothly after adjustment is completed d Tighten completely one mounting screw Door open monitor switch rear Hook Primary interlock switch Interlock ...

Страница 18: ...of low voltage transformer Malfunction of interlock monitor switch Defective low voltage transformer Check continuity of interlock monitor switch with door closed COM C Check continuity of primary interlock switch contact with door partially open until interlock monitor switch contact close COM NO Shorted contacts of primary interlock switch Fuse again blows Disconnect high voltage fuse and operat...

Страница 19: ...chanism And Adjustment NOTE CONDITION CHECK RESULT CAUSE REMEDY Turn table motor and oven lamp do not turn on No Continuity Adjust or replace Adjust or replace Replace Replace Malfunction of primary interlock switch No Continuity 0 V Approx 15 VDC Check continuity of primary interlock switch Check continuity of secondary interlock and D O M switches Check D C voltage being supplied to RELAY RY2 co...

Страница 20: ...ay coil REMEDY Replace Replace Replace Replace Replace Replace Replace Replace No microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megger Check continuity of high voltage capacitor terminals with wires removed Connect megger leads to magnetron terminal and magnetron body Check resistance of primary and secondary coil of high voltage transfo...

Страница 21: ...ile counting down 9 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when clear pad is touched 11 Oven lamp and turntable motor do not stop although cooking is finished Check if the RELAY 2 contacts close if they are close replace touch control circuit TROUBLE SHOOTING GUIDE Before following the particular steps listed above in the trouble shooting gui...

Страница 22: ...he load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched on 5 Heating time should be exactly A seconds Refer to table as following Heating time is measured while the microwave generator is operating at full power The filament heat up time for magnetron is not included 6 The initial and final temperature of water is selected so th...

Страница 23: ...et door seem door viewing screen the exhaust air vents and the suction air vents 3 Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabinet door seem is unknown move the probe more slowly 4 When measuring near a corner of the door keep the probe perpendicular to the areas making sure the probe end at the base of the cone does not get closer than 2 in...

Страница 24: ... the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage batteries should be used to check the front back resistance of the diode otherwise an infinite resistance amy be read in both directions A normal diode s resistance will be infinite in one direction and several hundred K...

Страница 25: ...24 WIRING DIAGRAM ...

Страница 26: ...C 1 PIN 2 21 30 34 5VDC 2 IC 1 PIN 35 3 IC 1 PIN 31 OR 32 NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V Replace VL1 EC1 NO LOAD 2 MP2 DC 12V 2 0V Replace EC2 D10 11 12 NO LOAD Each measure point must be measured with GND points 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 ...

Страница 27: ...26 PRINTED CIRCUIT BOARD ...

Страница 28: ...27 PRINTED CIRCUIT BOARD ...

Страница 29: ...or is opened during operation the count down timer does not stop refer to Circuit Diagram Point 1 Check method 5 When the digital clock does not operate properly refer to Circuit Diagram Point 5 POINT STATE A B RELAY 2 ON 5V DC GND RELAY 2 OFF GND 12VDC POINT STATE A B RELAY 2 ON 5V DC GND RELAY 2 OFF GND 12VDC POINT STATE A B 1 DOOR OPEN OPEN 5VDC 2 DOOR CLOSED CLOSE GND CHECK NO METHOD REMEDY 1 ...

Страница 30: ...29 2 P C B CIRCUIT DIAGRAM PRINTED CIRCUIT BOARD 16 17 18 19 9 8 7 6 5 4 3 2 2 4 5 1 3 14 15 7 8 20 10 4 3 2 2 1 1 2 3 1 4 0 ...

Страница 31: ...7 17 R CARBON FILM R1 10 15 13 21 101 102 1 6W 1K 5 RD AZ102J 7 18 R CARBON FILM R12 1 6W 100K 5 RD AZ104J 1 19 R CARBON FILM R2 1 6W 100 5 RD AZ101J 1 20 R CARBON FILM R3 5 6 1 6W 10K 5 RD AZ103J 3 21 R CARBON FILM R4 1 6W 1M 5 RD AZ105J 1 22 R CARBON FILM R20 1 4W 27 5 RD 4Z270J 1 23 R CARBON FILM R14 1 6W 4 7K 5 RD AZ472J 1 24 IC REGULATOR VL1 MC7905C 1MC7905C 1 25 TRANSISTOR Q2 6 8 10 KRA 106M...

Страница 32: ... FILM R1 10 15 13 21 101 102 1 6W 1K 5 RD AZ102J 7 18 R CARBON FILM R12 1 6W 100K 5 RD AZ104J 1 19 R CARBON FILM R2 1 6W 100 5 RD AZ101J 1 20 R CARBON FILM R3 5 6 1 6W 10K 5 RD AZ103J 3 21 R CARBON FILM R4 1 6W 1M 5 RD AZ105J 1 22 R CARBON FILM R20 1 4W 27 5 RD 4Z270J 1 23 R CARBON FILM R14 1 6W 4 7K 5 RD AZ472J 1 24 IC REGULATOR VL1 MC7905C 1MC7905C 1 25 TRANSISTOR Q2 6 8 10 KRA 106M TZRA106M 8 2...

Страница 33: ...ssembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY F46 F45 F44 F43 F42 F41 F40 F39 F38 F37 F36 F35 F34 F33 F32 F31 F25 F24 F23 F22 F21 F05 F04 F02 F03 F07 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F20 F19 F06 F08 F01 F27 F26 F28 F29 F30 A00 B00 ...

Страница 34: ...30V 20W MW 10CA M02 F15 3512517000 GUIDE WIND PP 1 F16 3511800300 FAN PP 30 GLASS 1 F17 3518002200 MAGNETRON 2M218HF 1 F18 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 F19 7S422X4081 SPECIAL SCREW TT2 TRS 4X8 SE MFZN 1 F20 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F21 3518302200 CAPACITOR HV 2100VAC 0 98uF 187 1 F22 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F23 3518701100 FUSE HV 5KV 0 55...

Страница 35: ...HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1 F42 3511406200 COVER WAVE GUIDE HEATPROOF PP 1 F43 3717400620 COUPLER XAREC 1 F44 3514700710 ROLLER TEFLON 3 F45 3512517300 GUIDE ROLLER PP 5113MF6 A353B 1 F46 3517203600 TRAY GLASS 1 NO PART CODE PART NAME DESCRIPTION Q TY ...

Страница 36: ...17000 GUIDE WIND PP 1 F16 3511800300 FAN PP 30 GLASS 1 F17 3518002200 MAGNETRON 2M218HF 1 F18 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 F19 7S422X4081 SPECIAL SCREW TT2 TRS 4X8 SE MFZN 1 F20 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F21 3518302200 CAPACITOR HV 2100VAC 0 98uF 187 1 F22 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F23 3518114000 FUSE HV 5KV 0 55A HV 41A55 02 1 F24 351811370...

Страница 37: ...516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1 F42 3511406200 COVER WAVE GUIDE HEATPROOF PP 1 F43 3717400620 COUPLER XAREC 1 F44 3514700710 ROLLER TEFLON 3 F45 3512517300 GUIDE ROLLER PP 5113MF6 A353B 1 F46 3517203600 TRAY GLASS 1 NO PART CODE PART NAME DESCRIPTION Q TY EXPLODED VIEW AND PARTS LIST ...

Страница 38: ...OO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 360 7877 TEL 02 360 7804 E mail jnpark web dwe co kr PRINTED DATE MAR 2000 ...

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