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Service Manual

Microwave Oven

Model: KOR-631G0A

KOR-631H0A
KOR-631G9A
KOR-631H9A
KOR-861G0A
KOR-861H0A

DAEWOO ELECTRONICS CO., LTD.

S/M No. : R631G0A003

MCB780W
MCB780B

MCB770W
MCD770B

MCD990W
MCD990B

Содержание MCB780W

Страница 1: ...Service Manual Microwave Oven Model KOR 631G0A KOR 631H0A KOR 631G9A KOR 631H9A KOR 861G0A KOR 861H0A DAEWOO ELECTRONICS CO LTD S M No R631G0A003 MCB780W MCB780B MCB770W MCD770B MCD990W MCD990B...

Страница 2: ...n 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 own...

Страница 3: ...ing the oven 2 If any certified 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...

Страница 4: ...OUTSIDE DIMENSIONS W X H X D 465x279x360 mm 18 3x11 0x14 2 in 495x294x388 mm 19 5x11 6x15 3 in CAVITY DIMENSIONS W X H X D 290x211x306 mm 11 4x8 3x12 0 in 320x228x388 mm 12 6x9 0 x 13 3 in NET WEIGHT...

Страница 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION KOR 631G H 631G H9 KOR 861G H 465 495 279 294 360 388 279 294...

Страница 6: ...outlet from splashes 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 t...

Страница 7: ...ng 6 Less Used to remove 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 minute time...

Страница 8: ...to remove time from cooking 6 Auto Defrost Used to defrost foods for weight 7 Power Used to set power level 8 Defrost Used to defrost foods for time 9 Kitchen Timer Used as minute timer delay cooking...

Страница 9: ...imately 12 10 KOR 630A9A 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...

Страница 10: ...king time ends 10 When the STOP CLEAR pad is touched during the oven operatiion the oven stops cooking and all information retained To erase all information except the present time touch the STOP SLEA...

Страница 11: ...ing repair 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 replac...

Страница 12: ...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 doo...

Страница 13: ...3512300200 GASKET DOOR PP 1 A08 3513100740 HOOK POM LG 1 A09 3515101300 SPRING HOOK PW1 1 1 KOR 631G0A 631H0A 631H9A 631G9A REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK A01 3512204110 FRAME DOOR...

Страница 14: ...the door to contact the door seal to oven front surface Tighten two screws 1 Remove the gasket door from door weld as 2 Remove the barrier screen inner from door weld as 3 Remove the door frame from d...

Страница 15: ...EN ABS XR 401 H 2938 1 B06 441G430171 SPRING BUTTON SWP DIA0 7 1 B07 3516906900 BUTTON DOOR OPEN ABS AF 345 HFA 700HT 1 1 KOR 631G0A 631H0A 631H9A 631G9A REF NO PART CODE PART NAME DESCRIPTION Q TY RE...

Страница 16: ...cked 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 nor...

Страница 17: ...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 reassembly 9 To remove H V transformer...

Страница 18: ...losed the hook pushes the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch...

Страница 19: ...ted of 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 of primary interlock switch co...

Страница 20: ...ity Adjust or replace Check D C voltage being sup plied to RELAY RY2 coil Defective touch control circuit 0 V Replace Faulty contacts of RELAY RY2 or open relay coil Approx 15 VDC Replace Display do n...

Страница 21: ...place 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 or Defective h...

Страница 22: ...n 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 a...

Страница 23: ...ssel 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 foll...

Страница 24: ...net 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 i...

Страница 25: ...the ohmmeter 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 b...

Страница 26: ...25 WIRING DIAGRAM...

Страница 27: ...R 32 NOTE 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 po...

Страница 28: ...27 Measure Point...

Страница 29: ...en 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 Poin...

Страница 30: ...29 2 PCB CIRCUIT DIAGRAM 1 KOR 631G0A 631H0A 631H9A 631G9A...

Страница 31: ...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 10K 5 RD AZ103J 3...

Страница 32: ...RESISTOR R1 R7 1 6W 330 5 RD AZ331J 7 16 RESISTOR R8 9 10 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 100K 5 RD AZ101J 1 19 RESISTOR R15 17 1 6W 10K...

Страница 33: ...32 1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY EXPLODED VIEW AND PARTS LIST...

Страница 34: ...20V 21W MW08XA A01 KOR 631G H9A F13 3512517000 GUIDE WIND PP 1 F14 3511800300 FAN PP 30 GLASS 1 F15 3518002200 MAGNETRON 2M218H MF I 1 F16 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 F17 7272...

Страница 35: ...N 1 F38 3966820200 MOTOR SYNCRO 120V 2W GM 16 12F17 1 F39 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1 F42 3...

Страница 36: ...POLE 120V 21W OEM 10DWX1 A07 1 F13 3512517000 GUIDE WIND PP 1 F14 3511800300 FAN PP 30 GLASS 1 F15 3518002200 MAGNETRON 2M218H MF I 1 F16 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 F17 7S42...

Страница 37: ...1 F38 3966820200 MOTOR SYNCRO 120V 2W GM 16 12F17 1 F39 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 TRS 4X8 MFZN 1 F42 351140...

Страница 38: ...S M NO R631G0A003 DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Aug 2001...

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