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Service Manual

Microwave Oven

Model: KOG-8A275S

KOG-8A275S39

KOG-8A275S40

S/M No. : 

Nov. 2009

✔

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-8A275S

Страница 1: ...A275S40 S M No Nov 2009 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: ...rlock 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 per formed on each oven prior to release to the owner TABLE OF CONTENTS PRECAUTIONS TO BE OBSERVED BEFORE AND ...

Страница 3: ...rtified 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 ope...

Страница 4: ...050 W COMBINATION 2200 W MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2 450MHz OUTSIDE DIMENSIONS WXHXD 465 x 287 x 368mm CAVITY DIMENSIONS WXHXD 298 x 230 x 330mm CAVITY VOLUME 23 L NET WEIGHT APPROX 12 7Kg TIMER 35 min DUAL SPEED POWER SELECTIONS 5 Levels Specifications are subject to change without notice ...

Страница 5: ...4 EXTERNAL VIEW 465 287 368 1 OUTER DIMENSION ...

Страница 6: ...avity floor This is to remain in the oven for all cooking 0 0 Roller guide This must always be used for cooking together with the glass cooking tray q q Glass cooking tray Made of special heat resistant glass Food in a proper receptacle is placed on this tray for cooking w w Door viewing screen Allows viewing of food The screen is designed so that light can pass through but not the microwave e e D...

Страница 7: ...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 temperature This may occur during delivery i...

Страница 8: ...be turned off auto matically when the timer reaches OFF Then food can be taken out of the oven To prevent the oven from operating with the door open your microwave oven is fitted with safety door interlock switches If you wish to inspect the food while it is cooking simply open the door The oven will automatically stop cooking To continue cooking you simply close the door If you wish to stop cooki...

Страница 9: ...air 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 15A fuse is blown out due to th...

Страница 10: ...ard 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 11: ...Tighten two screws 3 To reduce gap located on part C Loosen the screw on the interlock switch assembly located the top of the oven body Draw the interlock switch assembly inward as possible to engage with the hook on the door bottom Tighten a screw 4 To reduce gap located on part D Loosen the screw on the interlock switch assembly located the bottom of the oven body 3 Method to reduce the gap betw...

Страница 12: ...ing and the hook 6 Remove the barrier screen outer from the door frame 7 Reverse the above steps for reassembly A01 3517009830 BARRIER SCREEN O SAN 1 5T 1 A02 3512210230 FRAME DOOR HIPS SG 970 HG 1760H 1 A03 3515204100 STOPPER HINGE T AS KOR 63150S 1 A04 3511719500 DOOR PAINTING AS KOR 6C0B5S 1 A05 3517002800 BARRIER SCREEN I POLYESTER T0 1 1 A06 3512300210 GASKET DOOR PP 1 A07 3513100750 HOOK POM...

Страница 13: ...l panel 7 Reverse the above steps for reassembly B01 3513411220 KNOB VPC ABS SG 0760D SG 175 1 B02 3516735440 CONTROL PANEL HIPS SG 970 HG 1760H 1 B03 4415A17352 SW MICRO VP 533A OF SPNO 187 200G 1 B04 3512766301 HARNESS TIMER KOG 37150S 1 B05 3515101600 SPRING FLAT SUS 301 T0 5 1 B06 3517403110 COUPLER VPC KNOB POM 83MM 7 SPELEMECH 1 B07 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 1 B08 3517400400...

Страница 14: ... secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly NOTE Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm2 for a fully assembled oven with door normally closed Metallic gasket plate Ma...

Страница 15: ...e 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 7 Remove the motor shaded pole 8 Reverse the above steps for reassembly 9 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 16: ...se plate 4 Remove the tray motor cover 5 Remove a screw which secure the tray motor 6 Remove the tray motor 7 Reverse the above steps for reassembly except for securing the tray motor cover with screw 11 To remove heater assembly 1 Remove the three nuts 2 Remove the insulator heater assembly 3 Reverse the above steps for reassembly ...

Страница 17: ...515001200 SPACER INSULATOR I C3771BD A 24 2 2 C03 3513301100 INSULATOR HEATER SPP T0 8 1 C04 3512803410 HEATER 230V 1000W 1SOPE47501 1 C05 7002500613 SCREW MACHINE TRS 5X6 MFCR 1 C06 7002400814 SCREW MACHINE TRS 4X8 MFCR 2 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK ...

Страница 18: ...on and presses the button of the secondary interlock switch to bring it under ON condition 3 Adjustment steps a Loosen the mounting screw b Adjust interlock switch assembly position Actuation distance of primary and secondary interlock switch shall be adjusted almost 0 7mm c Make sure that lock lever moves smoothly after adjustment is completed d Tighten completely a mounting screw Hook Primary in...

Страница 19: ...condary interlock switch and interlock monitor switch NO Fuse again Disconnect one side of the lead wire connected from transformer to the high voltage capacitor and operate oven Replace high voltage capacitor Replace high voltage transformer Normal TROUBLE 1 Oven does not operate at all any inputs can not be accepted TROUBLESHOOTING GUIDE Following the procedure below to check if the oven is defe...

Страница 20: ...table motor NO If microwave do not oscillate check continuity of filament of magnetron Poor continuity NO Continuity Check continuity filament tap 3 3V of high voltage Replace high Voltage transformer No Continuity Continuity Check continuity filament tap 3 3V of high voltage Replace high Voltage transformer Continuity in the reverse direction Replace magnetron Normal reading should be approx 0Π M...

Страница 21: ...essel 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 selecte...

Страница 22: ...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 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 23: ...mmeter 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 seve...

Страница 24: ...23 WIRING DIAGRAM ...

Страница 25: ...24 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 ...

Страница 26: ...ZN 1 F11 3518906700 THERMOSTAT OFF 80 ON 70 H 187 1 F12 7S627W50X1 NUT HEX NUT FLANGE M5X0 8P MFZN 1 F13 3518606100 NOISE FILTER DWLF M13 1 F14 7121402511 SCREW TAPPING T2S PAN 4X25 MFZN 2 F15 3963512310 MOTOR SHADED POLE 230V 20W MW10CA M02 1 F16 3512517000 GUIDE WIND PP 1 F17 3511800300 FAN PP 30 GLASS 1 F18 3518003700 MAGNETRON 2M218JFL 6CF 1 F19 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DAC...

Страница 27: ...P BL 240V 25W T25 C7A H187 1 F44 3512714800 HARNESS MAIN KOG 37150S EC 1 F45 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F46 3966031600 MOTOR SYNCRO 220 240V 50 60HZ ST 16 MN73MQAD A 1 F47 3518907100 THERMOSTAT OFF 95 ON 85 H 187 NO 1 F48 3513003410 HOLDER THERMOSTAT PP BK 1 F49 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 2 F50 3511405100 COVER WAVE GUIDE MICA T0 5 1 F51 3517400600 COUPLER XAREC 1 F...

Страница 28: ...S M NO DAEWOO ELECTRONICS CORP 1 2 Jeo dong 1 il ga Jung gu Seoul Korea C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Nov 2009 ...

Страница 29: ... THIS MANUAL ABC D E F G H IJK LMN O K LMN PQ O K LMN R S OET U V LRRQ WW LP WX LX Y Z PX X NX _ _ a E E b LKc def g h V Gi MPRJR66R j ki MPRJPMKK RQ WW LPJl8 l8m Wc Pc Nc Mc WRc WWc W6c LWc L c LNc L6cn o WPc RQ WW L JWLc LNc L6c VZn o Pc ...

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