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Service Manual

Microwave Oven

Model: KOR-1A0A0A

KOR-1A1G0A

KOR-1A1H0A

KOR-1A1G9A27

KOR-1A1H9A27

KOR-1A1H9A37

KOR-1A4G0A

KOR-1A4H0A

KOR-1A4H9A27

KOR-1A7G9A27

KOR-1A8Q0A

KOR-1A9H9A

KOR-1A9H9A27

S/M No. :  R1A1G0A005

Dec. 2005

✔

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-1A0A0A

Page 1: ...OR 1A4H9A27 KOR 1A7G9A27 KOR 1A8Q0A KOR 1A9H9A KOR 1A9H9A27 S M No R1A1G0A005 Dec 2005 Caution In this Manual some parts can be changed for improving their performance without notice in the parts list...

Page 2: ...tive 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...

Page 3: ...the oven operates with the door open the service person should tell the user not to operate the oven and contact the manufacturer immediately IMPORTANT The wire in this mains lead coloured in accorda...

Page 4: ...LS CAVITY VOLUME 1 1 Cu Ft SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2 SPECIFICATIONS 2 KOR 1A4G H MODEL KOR 1A0A 1A1G 1A1H POWER SUPPLY 120V 60Hz SINGLE PHASE WITH GROUNDING MICROWAVE 1400W...

Page 5: ...ONS 10 LEVELS CAVITY VOLUME 1 1 Cu Ft SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 4 KOR 1A8Q MODEL KOR 1A7G POWER SUPPLY 120V 60Hz SINGLE PHASE WITH GROUNDING MICROWAVE 1400W POWER GRILL CONSU...

Page 6: ...VE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 539 x 300 x 409 mm 21 2 x 11 8 x 16 1 in CAVITY DIMENSIONS W X H X D 354 x 228 x 373 mm 13 9 x 9 0 x 14 7 in NET WEIGHT APPROX 15 8 Kg 34 9 lbs TIMER...

Page 7: ...6 3 EXTERNAL VIEW 1 OUTER DIMENSION 1 KOR 1A0A 1A1G H 2 KOR 1A4G H...

Page 8: ...7 3 KOR 1A7G 4 KOR 1A8Q...

Page 9: ...8 5 KOR 1A9H...

Page 10: ...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 resistant glass The tray must always be in...

Page 11: ...wing of food Microwave cannot pass through perforations in screen 4 SPATTER SHIELD Protects the microwave outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating...

Page 12: ...tors and present time are displayed 3 3 One touch Used to cook or reheat specific quantities of food 4 4 More Used to add time to cooking 5 5 Less Used to remove time from cooking 6 6 Auto Defrost Use...

Page 13: ...time to cooking 6 6 Less Used to remove time from cooking 7 7 Auto Defrost Used to defrost foods for weight 8 8 Power Used to set power level 9 9 Defrost Used to defrost foods for time 0 0 Kitchen Ti...

Page 14: ...5 Less Used to remove time from cooking 6 6 Auto Defrost Used to defrost foods for weight 7 7 Power Used to set power level 8 8 Defrost Used to defrost foods for time 9 9 Kitchen Timer Used as a minut...

Page 15: ...f food 4 4 Quick cook Used to cook or reheat 5 5 More Used to add time to cooking 6 6 Less Used to remove time from cooking 7 7 Auto Defrost Used to defrost foods for weight 8 8 Power Used to set powe...

Page 16: ...of approximately 12 amperes 120Volts 60Hz grounded outlet Power supply cord is about 0 8 meters long 1 A short power supply cord is provided to reduce the risks resulting from becoming entangled in or...

Page 17: ...ore If the oven door is opened during the oven operation all information is retained 10 If the Start pad is touched and the oven does not operate check the area between the door and door is closed sec...

Page 18: ...12A fuse is blown out due to the operation of the monitor switch replace primary interlock switch secondary interlock switch and interlock monitor switch 5 After repair or replacement of parts make s...

Page 19: ...eplacing the door assembly perform a check of correct alignment with the hinge and cavity front plate e e h h h h h h e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e...

Page 20: ...970 KOR 1A9H9A 27 A03 3515202900 STOPPER HINGE T AS KOR 121M0A 1 A04 3511711300 DOOR PAINTING AS KOR 1A1G0A 1 A05 3517005800 BARRIER SCREEN I PE 1 A06 3512301900 GASKET DOOR PP 1 A07 3513100700 HOOK P...

Page 21: ...1 A07 3512603301 HANDLE DOOR U ABS SG 175 1 A08 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 2 A09 3517005800 BARRIER SCREEN I PETP T0 1 1 A10 3512301900 GASKET DOOR PP 1 1 Remove the gasket door from d...

Page 22: ...07 3512602700 HANDLE DOOR U ABS XR 401 H 2938 1 A08 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 2 A09 3517005800 BARRIER SCREEN I PETP T0 1 1 A10 3512301900 GASKET DOOR PP 1 1 Remove the gasket door fr...

Page 23: ...h 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 e e h h h h h h e e e e e e e e e e e e...

Page 24: ...0A 3518522100 KOR 1A1G0A KOR 1A1G0A B01 3518522110 SWITCH MEMBRANE KOR 1A1H0A 1 KOR 1A1H0A 3518570980 KOR 1A8Q0A KOR 1A8Q0A 3518523740 KOR 1A9H9A KOR 1A9H9A 3516722330 ABS AF 345 KOR 1A0A0A 3516722300...

Page 25: ...y B01 B02 B03 B04 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK B01 3518522130 SWITCH MEMBRANE KOR 1A4G0A 1 3518522140 KOR 1A4H0A 1A B02 3516722320 CONTROL PANEL ABS AF 315 345 HFA 700HT 1 B03 PK...

Page 26: ...ithout 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 c...

Page 27: ...Draw forward the wind guide assembly 4 Pull the fan from the motor shaft 5 Remove two screws which secure the motor shaded pole 6 Remove the motor shaded pole 7 Reverse the above steps for reasembly...

Page 28: ...hten completely a mounting screw ADJUSTMENT Interlock monitor switch When the door is closed the interlock monitor switch should be changed NO condition before other switches are closed When the door...

Page 29: ...e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e...

Page 30: ...e Display do not shown countdown Malfunction of secondary interlock switch Replace Check continuity of power supply cord Open power supply cord No Continuity Replace Defective touch control circuit No...

Page 31: ...lace 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 or infinity Defec...

Page 32: ...table 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...

Page 33: ...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...

Page 34: ...net 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...

Page 35: ...ter 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...

Page 36: ...35 10 WIRING DIAGRAM 1 KOR 1A1G H 9A27 1A7G9A27 1A9H9A27 1A1H9A37 1A4H9A27...

Page 37: ...36 2 KOR 1A0A0A 1A1G H 0A 1A4G H 0A 1A8Q0A 1A9H9A...

Page 38: ...e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e g g g g g g NOTE 1 Refer to Circuit Diagram point 4 2 Secondary side voltage of the low voltage transformer changes in proportion to...

Page 39: ...38 Measure Point...

Page 40: ...the door 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...

Page 41: ...40 2 PCB CIRCUIT DIAGRAM...

Page 42: ...15 RESISTOR R1 R5 1 6W 330 5 RD AZ331J 7 16 RESISTOR R8 10 12 14 22 1 6W 1K 5 RD AZ102J 5 17 RESISTOR R11 20 21 1 6W 100K 5 RD AZ104J 3 18 RESISTOR R13 1 6W 100 5 RD AZ101J 1 19 RESISTOR R15 17 1 6W 1...

Page 43: ...e e e e e e e e e e e e e e e e e e e e g g g g g g NOTE 1 Refer to Circuit Diagram point 4 2 Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power sourc...

Page 44: ...43 Measure Point MP1 MP2...

Page 45: ...n the door 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...

Page 46: ...45 2 PCB CIRCUIT DIAGRAM...

Page 47: ...5C 1CPMC7805C 1 17 LED DISPLAY DP1 DDG 611Q DDDG611Q00 1 18 PCB MAIN M152 81 5X139 9 3514315400 1 19 R ARRAY RA1 7P 6 1 8 100K J RA 87X104J 1 20 RESISTER R12 1 6W 100 5 RD AZ201J 1 21 RESISTER R11 15...

Page 48: ...47 1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY 12 EXPLODED VIEW AND PARTS LIST...

Page 49: ...H 9A27 1A7G9A27 1A9H9A27 F03 3516110400 CAVITY AS KOR 1A1G0A 1 F04 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 1 F05 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 1 F06 7112401011 SCREW TAPPING T1 TRS 4 1...

Page 50: ...F31 4415A66910 SW MICRO VP 531A OF SZM V16 FA 61 1 F32 3518571000 SWITCH PUSH MP101C 1 3513702600 POM KOR 1A0A 1A1G H F33 LEVER LOCK 1 1A8Q 1A9H 3513702610 POM KOR 1A4G H 1A7G 3513811700 POM KOR 1A0A...

Page 51: ...S M NO DAEWOO ELECTRONICS CORP 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Dec 2005...

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