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S/M No. :

G131A0S001

Service Manual

Microwave Oven

Model: KOG-180A0S

DAEWOO ELECTRONICS CO., LTD.

S/M No. :

G180A0S001

http : //svc.dwe.co.kr

Feb. 2002

✔

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).

Содержание KOG-180A0S

Страница 1: ...D S M No G180A0S001 http svc dwe co kr Feb 2002 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 ...

Страница 2: ...in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner TABLE OF CONTENTS SAFETY AND PRECAUTIONS 3 FOR...

Страница 3: ... when the door is opened Do not attempt to defeat them DO NOT ATTEMPT TO 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 servicing the oven 2 If any certified oven unit is found to have excessive emission level 5mW cm2 the service person should a inform...

Страница 4: ...2500W MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 589X339X488mm CAVITY DIMENSIONS W X H X D 399X278X452 1mm NET WEIGHT APPROX 19 5kg TIMER 99min 90sec FUNCTION SELECTIONS MICROWAVE GRILL COMBINATION POWER SELECTIONS 10 LEVELS CAVITY VOLUME 1 8 Cu Ft Specifications are subject to change without notice ...

Страница 5: ...5 EXTERNAL VIEW 589 339 488 1 OUTER DIMENSION ...

Страница 6: ...hes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 GLASS COOKING TRAY Made of special heat resisant glass The tray must always be in proper position before operating Do not cook food directly on the tray 9 OVEN FRONT PLATE 10 DOOR OPENING BUTTON To open the door push the door opening button When door is closed it will automatic...

Страница 7: ...nt time are displayed 3 ONE TOUCH Used to cook or reheat specific quantities of food 4 AUTO COOK Used to cook or reheat 5 MORE Used to increase time to cooking 6 LESS Used to decrease time from cooking 7 AUTO DEFROST Used to defrost foods for weight 8 POWER Used to set power level 9 DEFROST Used to defrost foods for time 10 KITCHEN TIMER Used as a minute timer delay cooking hold setting after cook...

Страница 8: ...e of special type which if damaged 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 t...

Страница 9: ...f the oven door is opened during the oven operation all information is retained 11 If the START pad is touched and the oven does not operate check area between the door and door is closed securely The oven will not start cooking under the door is completely closed or the program has been reset 12 When using the GRILL or COMBI mode Do not open the door so often the temperature inside the oven decre...

Страница 10: ...ing repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped 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 15A fuse is blown due to...

Страница 11: ...ward 2 To remove door assembly 1 Remove two screws 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 ...

Страница 12: ...1 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 barrier screen outer from door frame 7 Reverse the above steps for reassembly Door As 3511715500 Caution In this Service Manual some parts can be changed for improving their ...

Страница 13: ...inge 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 NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 ...

Страница 14: ...rse the above steps for reassembly REF NO PART CODE PART NAME DESCRIPTION Q TY B01 3518523600 SWITCH MEMBRANE KOG 180A0S 1 B02 3516726010 CONTROL PANE ABS SG 175 SG 0760D 1 B03 PKMPMSX510 PCB AS KOG 131A0S 1 B04 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 3 B05 3513702800 LEVER DOOR OPEN PP 1 B06 441G430171 BUTTON SPRING SWP DIA 0 7 1 B07 3516903020 BUTTON DOOR OPEN ABS SG 175 SG 0760D 1 KOG 180A0S...

Страница 15: ...oor normally closed 6 To remove high voltage capacitor 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 7 High voltage circuit wiring 8 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reasse...

Страница 16: ... assembly 3 Pull the fan from the motor shaft 4 Remove two screws which secure the motor shaded pole 5 Remove the motor shaded pole 6 Reverse the above steps for reasembly 10 To remove H V transformer 1 Remove four screws holding the H V transformer 2 Remove the H V transformer 3 Reverse the above steps for reassembly ...

Страница 17: ...PART NAME PART CODE DESCRIPTION Q TY C01 INSULATOR HEATER 3513302200 SPP T0 8 1 C02 HEATER 3512802900 230V 1100W 1 C03 SCREW MACHINE 7002400413 TRS 5X6 MFCR 1 C04 NUT HEX 7392500008 6N 2 5 SUS 1 C05 SCREW MACHINE 7002400413 TRS 4X4 MFCR 2 C06 SPACER INSULATOR I 3515001000 C3771BD 2 Caution In this Service Manual some parts can be changed for improving their performance without notice in the parts ...

Страница 18: ...ever downward The lock lever presses the button of the interlock monitor switch to bring it under NO condition The lock lever presses the button of the secondary interlock switch to bring it under NO condition 3 Adjustment steps a Loosen the one mounting screw b Adjust interlock switch assembly position c Make sure that lock lever moves smoothly after adjustment is completed d Tighten completely t...

Страница 19: ...he terminals and power cord before check the parts listed below CONDITION CHECK Check continuty of interlock monitor switch with door closed COM NC Check continuity of both primary and secondary interlock switch with door colosed Malfunction of interlock monitor switch Malfunction of interlock switch RESULT Continuity No Continuity CAUSE REMEDY Replace NOTE 1 Fuse blows Replace NOTE 1 Shorted cont...

Страница 20: ... filter board No Continuity Replace Check continuity of power supply cord Open power supply cord No Continuity Replace Defective touch control circuit Normal Adjust CONDITION CHECK Check continuity of primary interlock switch Malfunction of primary interlock switch RESULT No Continuity CAUSE REMEDY Adjust or replace Turntable motor and oven lamp do not turn on Check continuity of secondary interlo...

Страница 21: ...ection Defective high voltage rectifier Replace Connect megger leads to magnetron terminal and magnetron body Continuity Defective magnetron Replace Check resistance of primary and secondary coil of high voltage transformer 0 Ω or Defective high voltage transformer Replace Check continuity of magnetron with wires removed No Continuity Defective magnetron Replace Check continuity of filament termin...

Страница 22: ...iously jumps in time while 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 NOTE Before following the particular steps listed above in the trouble shootin...

Страница 23: ...he vessel the 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 sel...

Страница 24: ...abinet 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 ...

Страница 25: ...meter set on 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 may be read in both directions A normal diode s resistance will be infinite in one direction and sever...

Страница 26: ...TOR SWITCH INTERLOCK SECONDARY INTERLOCK SWITCH COM NC NO FILTER ASS Y L GE GN BL WH N BR BK SINGLE PHASE ONLY POWER SUPPLY FUSE L N RD GY WH L RD CONTROL P W B ASS Y RELAY 1 D O M SWITCH GN BL RELAY 2 CL GY GY GM RD PRIMARY SWITCH UPPER INTERLOCK COM RD NC NO MAGNETRON THERMOSTAT H V DIODE FM H V CAPACITOR TRANSFORMER HIGH VOLTAGE WH WH BL R BK RD BK BK GY RD H V FUSE RELAY 3 THERMOSTAT GRILL BL ...

Страница 27: ...oltage transformer changes in proportion to fluctuation of power source voltage 3 The allowable tolerance of the secondary voltage is within 5 of nominal voltage NOTE Each measure point must be measured with GND points Terminal Voltage 4 7 LOAD AC 12 6 V NO LOAD AC 14 7 V NO CHECK POINT REMARK 1 IC1 PIN 2 21 30 34 5VDC 2 IC1 PIN 35 3 IC1 PIN 31 OR 32 T 20 0ms 50Hz T 250 ns 4MHz NO MEASURE POINT WA...

Страница 28: ...28 MP1 MP2 Mesure point ...

Страница 29: ...ram point 6 Check method 5 When the door is opened during operation the count down timer does not stop refer to Circuit Diagram point 1 Check method 6 When the digital clock does not operate properly refer to Circuit Diagram point 5 If clock does not keep exact time you must check resistor R15 16 zener diode ZD1 POINT A B STATE RELAY 2 ON 5VDC GND RELAY 2 OFF GND 12VDC POINT A B STATE RELAY 1 ON 5...

Страница 30: ...30 2 P C B CIRCUIT DIAGRAM ...

Страница 31: ...Z101J 1 19 RESISTOR R15 17 1 6W 10K 5 RD AZ103J 3 20 RESISTOR R18 1 6W 1M 5 RD AZ105J 1 21 RESISTOR R19 1 4W 51 5 RD 4Z510J 1 22 RESISTOR R23 1 6W 4 7K 5 RD AZ472J 1 23 REGULATOR VL1 MC7905C 1MC7905C 1 24 TRANSISTOR Q1 5 8 11 KRA 106M TZRA106M 9 25 TRANSISTOR Q6 KTA 1266 TZTA1266Y 1 26 TRANS POWER LVT1 DMR 631FS 5EPV035303 1 27 WIRE COPPER J1 3 5 8 10 12 17 21 1 0 52 TIN COATING 85801052GY 14 28 W...

Страница 32: ...NTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY F40 F42 F41 B00 A00 F39 F38 F36 F33 F35 F34 F32 F31 F27 F30 F29 F28 F26 F45 F43 F48 F46 F50 F49 F01 F05 F04 F02 F03 F06 F07 F08 F25 F24 F22 F21 F18 F20 F19 F17 F16 F15 F14 F13 F51 F44 C00 F12 F23 F09 F10 F47 F11 F37 ...

Страница 33: ...E 230V 50HZ OEM 15DWC 2 A04 1 F15 3512514200 GUIDE WIND PP 1 F16 3511800100 FAN PP GF20 1 F17 3518002900 MAGNETRON 2M218H F P 1 F18 3516003800 SPECIAL SCREW T2 FLANGE 5 8 MFZN 1 F19 7272400811 SCREW TAPPING T1 TRS 4X8 MFZN 1 F20 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F21 3518302300 CAPACITOR HV 2100VAC 1 10UF 187 1 F22 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F23 3518700230 FUSE HV 5KV 0 7A H...

Страница 34: ...1 F42 3513003400 HOLDER THERMOSTAT PP NATURL 1 F43 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 2 F44 4078502031 BUTTON LOCKING PP HONAM A353 2 F45 3511405100 COVER WAVE GUIDE MICA T0 35 1 F46 3517402000 COUPLER QUESTRA 1 F47 7S627W50X1 NUT HEX NUT FLANGE M5 0 8P MFZN 2 F48 3514700710 ROLLER TEFLON 3 F49 3512517200 GUIDE ROLLER PP 1 F50 3517207700 TRAY GLASS 1 F51 3517208500 TRAY RACK AS KOG 180A0S 1...

Страница 35: ...S001 DAEWOO 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 8184 TEL 02 360 8183 E MAIL G7F00E WEB DWE CO KR PRINTED DATE Feb 2002 ...

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