Daewoo KOG-8A0R5S Service Manual Download

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Service Manual

Microwave Oven

Model: KQG-8A6K5S

S/M No. :

Feb. 2013

✔

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 KOG-8A0R5S

Page 1: ...o Feb 2013 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 ...

Page 2: ...nd cavity for proper align ment integrity and connections d Any defective or misadjusted components 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...

Page 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...

Page 4: ...50 W COMBINATION 2200 W MICROWAVE ENERGY OUTPUT 800 W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS W x H x D 465 x 287 x 347 mm CAVITY DIMENSIONS W x H x D 298 x 230 x 330 mm CAVITY VOLUME 23 L NET WEIGHT APPROX 12 7 Kg TIMER 60 min POWER SELECTIONS 10 LEVELS Specifications are subject to change without notice ...

Page 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION 465 347 287 ...

Page 6: ...ty interlock system 6 6 Control panel 7 7 Spatter shield Protects the microwave outlet from splashes of cooking foods 8 8 Roller guide Supports the glass cooking tray 9 9 Coupler This fits over the shaft in the center of the oven cavity floor This is to remain in the oven for all cooking 0 0 Glass cooking tray Made of special heat resis tant glass The tray must always be in proper position before ...

Page 7: ...ght 5 5 Start Express Cook Used to start the oven operation or to increase the reheat time by 30 seconds 6 6 Stop Clear Used to stop operation the oven or to delete the cooking data 7 7 Auto Defrost Used to defrost foods for weight defrost 8 8 Auto Cook Used to cook or reheat many of favorite food 9 9 Chilled Meal Used to reheat meal or dinner plate 0 0 Micro Power Used to set power level q q Gril...

Page 8: ...ype 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 temperature Thi...

Page 9: ...to the present time when the cooking time ends 19 When the STOP Clear button is pushed during the oven operation the oven stops cooking and all information retained To erase all information except the present time push the STOP Clear pad once more If the oven door is opened during the oven operation all information is retained 10 If the START button is pushed and the oven does not operate check th...

Page 10: ...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...

Page 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 ...

Page 12: ...511719500 DOOR PAINTING AS KOR 6C0B5S 1 A02 3517002800 BARRIER SCREEN I POLYESTER T0 1 1 A03 3513100750 HOOK POM 1 A04 3515102000 SPRING HOOK PW1 1 A05 3512210280 FRAME DOOR ABS SG 0760D SG 175 COATING 1 A06 3517009930 BARRIER SCREEN O ABS UT 0510 SMOG 1 A07 3512606870 HANDLE DOOR ABS SG 0760D SG 175 COATING 1 A08 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 2 A09 3512300210 GASKET DOOR PP 1 A10 351...

Page 13: ...op and then push the door to contact the door seal to the oven front surface Tighten two screws 2 To reduce gap located on part B Loosen two screws on the stopper hinge under and then push the door to contact the door seal to the oven front surface Tighten two screws A B NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 ...

Page 14: ...G 175 COATING 1 B02 3511618030 DECORATOR RING ABS SG 0760D SG 175 COATING 1 B03 3511616980 DECORATOR C PANEL ABS SG 0760 SG 175 COATING 1 B04 3515502310 WINDOW DISPLAY SAN CR 5381 SMOG 1 B05 3516911150 BUTTON FUNCTION A ABS SG 0760D SG 175 COATING 1 B06 3516911270 BUTTON FUNCTION B ABS SG 0760 SG 175 SEMI COATING 1 B07 3516913230 BUTTON FUNCTION C ABS SG 0760D SG 175 COATING 1 B08 3516915040 BUTTO...

Page 15: ...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 pre vent 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...

Page 16: ...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 ...

Page 17: ... part from the base 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 screws 2 Remove two Heater Brakets 3 Remove Heaters ...

Page 18: ...ion 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 RD GY RD ...

Page 19: ... the terminals and power cord before check the parts listed below CONDITION CHECK Check continuity of interlock monitor switch with door closed Check continuity of pri mary interlock switch con tact with door partially open until interlock moni tor switch contact close COM NC Malfunction of interlock moni tor switch Shorted con tacts of primary interlock switch RESULT Continuity No Continuity No C...

Page 20: ...lay coil Approx 15 VDC Replace NOTE All these switches must be replaced at the same time please refer to Interlock Mechanism And Adjustment TROUBLE 2 Display shows all figures selected but oven does not start cooking even though desired program and time are set and START button is tapped CONDITION CHECK Check continuity of magnetron Defective mag netron RESULT No Continuity CAUSE REMEDY Replace Ou...

Page 21: ...on Defective high voltage rectifier Replace Connect megger leads to mag netron terminal and magnetron body Continuity Defective mag netron Replace Check resistance of primary and secondary coil of high voltage transformer 0 Ω or Defective high voltage trans former Replace Check continuity of magnetron with wires removed No Continuity Defective mag netron Replace Check continuity of filament termi ...

Page 22: ... 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 cancel button 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 M W DEF Grill Combi g NOTE Before following the particular steps listed above in...

Page 23: ...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 select...

Page 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 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 ...

Page 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 oth erwise an infinite resistance may be read in both directions A normal diode s resistance will be infinite in one direction and seve...

Page 26: ...25 WIRING DIAGRAM ...

Page 27: ...sformer changes in proportion to fluctuation of power source volt age 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 5 6 7 LOAD AC 12 6 V NO LOAD AC 14 7 V NO CHECK POINT REMARK 1 IC1 PIN 5 5VDC 2 IC1 PIN 8 3 IC1 PIN 35 OR PIN 36 NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V Re...

Page 28: ...27 Measure Point MP2 MP1 GND ...

Page 29: ...le rotate and cook indicator in display comes on Check method 4 When the door is opened during operation the count down timer does not stop POINT A B STATE RELAY 2 ON 5VDC GND RELAY 2 OFF GND 12VDC POINT A B STATE RELAY 1 ON 5VDC GND RELAY 1 OFF GND 12VDC B A RY2 RY2 TRAY LAMP Q12 KTC3198GR 42 D9 1N4148 R17 R18 4 7K 100 1 4W RY1 M W 41 D8 1N4148 B A RY1 Q10 KRC106M R2 47K R3 10K A B 1 2 D O M SW R...

Page 30: ...DOOR OPEN OPEN 5VDC 2 DOOR CLOSED CLOSE GND CHECK NO HETHOD REMEDY 1 Check the stage ON OFF of the door open monitor Replace door open monitor switch switch by resistance measurement POINT WAVE FORM IC 1 PIN 8 If clock does not keep exact time you must check resistor R20 and zener diode ZD2 T T 20 ms 50Hz 5V 0V ...

Page 31: ...30 2 P C B CIRCUIT DIAGRAM DMR 631FS b f g d c e a DM R 6 31 P ...

Page 32: ... TRANSISTOR Q1 KTA 1266Y TZTA1266Y 1 28 TRANSISTOR Q12 KTC3198GR TZTC3198GR 1 29 CAPACITOR CERA C2 C4 6 102 50V Z AXIAL CCZB1H102K 4 30 CAPACITOR CERA C1 3 7 8 104 50V Z AXIAL CCZF1H104Z 4 31 TRANS POWER LVT1 DMR 631FS 5EPV035303 1 32 WIRE COPPER J2 6 8 J10 12 1 0 52 TIN COATING 85801052GY 9 7 5mm 33 WIRE COPPER J1 7 9 1 0 52 TIN COATING 85801052GY 3 10mm 34 WIRE COPPER SJ6 7 1 0 52 TIN COATING 85...

Page 33: ...ly and assembly 3 TOTAL ASSEMBLY EXPLODED VIEW AND PARTS LIST F37 A00 B00 F43 F46 F45 F44 F42 F41 F39 F40 F38 F55 F54 F52 F49 F50 F48 F47 F53 F03 F01 F02 F19 F18 F21 F24 F23 F22 F25 F26 F27 F34 F36 F35 F33 F32 F29 F30 F28 F17 F12 F14 F13 F15 F16 F11 F07 F05 F06 F08 F09 F10 F04 F31 F51 F20 F51 F20 ...

Page 34: ...TZ 115V 500W 240mm B WADEN 2 F13 3518606100 NOISE FILTER DWLF M13 1 F14 7121402511 SCREW TAPPING T2S PAN 4X25 MFZN 2 F15 3963514400 MOTOR SHADED POLE 230V 50HZ OEM 10DWC2 A07 A 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 DACRO 1 F20 3510610900 BRACKET HEATER SECC T0 5 2 F21 7272400811 SCR...

Page 35: ...M 1 F41 3513811750 LOCK FH 44N 1 F42 3513601600 LAMP BL 240V 25W T25 C7A H187 1 F43 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F44 3966031600 MOTOR SYNCRO 220 240V 50 60HZ ST 16 MN73MQAD A 1 F45 3518906710 THERMOSTAT OFF 80 ON 70 H 187 NB 1 F46 3513003410 HOLDER THERMOSTAT PP BK 1 F47 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 2 F48 3511405100 COVER WAVE GUIDE MICA T0 5 1 F49 3517400600 COUPLER XA...

Page 36: ...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 Feb 2013 ...

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