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Service Manual

Microwave Oven

Model: KOG-37B50S
KOG-39B50S

DAEWOO ELECTRONICS CO., LTD.

S/M No. : G37B50S001

http://svc.dwe.co.kr

Содержание KOG-39B50S

Страница 1: ...Service Manual Microwave Oven Model KOG 37B50S KOG 39B50S DAEWOO ELECTRONICS CO LTD S M No G37B50S001 http svc dwe co kr ...

Страница 2: ...be serviced before activating the magnetron or other microwave source and make repairs as necessary 1 Interlock operation 2 Proper door closing 3 Seal and sealing surfaces arcing wear and other damage 4 Damage to or loosening of hinges and latches 5 Evidence of dropping or abuse c Before turning on power to the microwave oven for any service test or inspection within the microwave generating compa...

Страница 3: ...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 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 o...

Страница 4: ...50W COMBINATION 2200W 2350W MICROWAVE ENERGY OUTPUT 800W 900W MICROWAVE FREQUENCY 2450MHz 2450MHz OUTSIDE DIMENSIONS W X H X D 465 x 279 x 354 mm 495 x 294 x 384mm CAVITY DIMENSIONS W X H X D 290 x 220 x 306 mm 320 x 244 x 338 mm NET W EIGHT APPROX 13 4 Kg APPROX 15 5 Kg TIMER 35 min DUAL SPEED FUNCTION SELECTIONS MICROWAVE GRILL COMBINATION POW ER SELECTIONS 5 LEVELS CAVITY VOLUME 0 7 Cu Ft 0 9 C...

Страница 5: ... EXTERNAL VIEW 1 OUTER DIMENSION Fig2 Side view Fig1 Front view ...

Страница 6: ... the door is opened 9 Metal Rack 10 Coupler This fits over the shaft in the center of the ovens cavity floor This is to remain in the oven for all cooking 11 Roller guide This must always be used for cooking together with the glass cooking tray 12 Glass cooking tray Made of special heat resistant glass Food in a proper receptacle is placed on this tray for cooking 13 Door viewing screen Allows vie...

Страница 7: ...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 temperature Th...

Страница 8: ...ooking time is needed and the door is closed the oven will automatically start when the timer is reset To set MICROWAVE cooking Set the variable power selector to the desired power level To set GRILL cooking Set the POWER SELECTOR to the grill position To set COMBI cooking Set the POWER SELECTOR to the combi position SYMBOL POWER LEVEL Approximate Percentage of Power DEFROST 33 MED HIGH 77 HIGH 10...

Страница 9: ...g repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation 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 out due to t...

Страница 10: ...net backward 2 To remove door assembly 1 Remove a screw which secure the stopper hinge top 2 Remove the door assembly from top plate of cavity 3 Reverse the above steps for reassembly After replacing the door assembly perform a check of correct alignment with the hinge and cavity front plate CAUTION ...

Страница 11: ...RIER SCREEN O ACRYL T1 5 1 A03 3515304610 SUPPORTER BARR S O PP 1 A04 3515204100 STOPPER HINGE T AS KOR 63150S 1 A05 3511705500 DOOR W ELD AS KOR 61150S 1 A06 3517002800 BARRIER SCREEN I POLYESTER T0 1 1 A07 3512300200 GASKET DOOR PP 1 A08 3513100700 HOOK POM 1 A09 3515101300 SPRING HOOK PW1 1 REF NO PART CODE PART NAME DESCRIPTION QTY REMARK A01 3512202270 FRAM E DOOR ABS XR 401 PA 777 B D 1 A02 ...

Страница 12: ...n stopper hinge top and then push the door to contact the door seal to oven front surface Tighten a screw 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 A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 NOTE ...

Страница 13: ...eassembly REF NO PART CODE PART NAME DESCRIPTION QTY REMARK B01 3513402690 KNOB VPC ABS XR 401 PA 777B D 1 B02 3516709870 CONTROL PANEL ABS XR 401 PA 777B D 1 KOG 37B50S 3516710150 KOG 39B50S B03 4415A66910 SW MICRO VP 531A OF SZM V16 FA 61 1 B04 3515101600 SPRING FLAT SUS 301 T0 5 1 B05 3517400500 COUPLER VPC KNOB POM 1 B06 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 1 B07 3517400400 COUPLER TIMER...

Страница 14: ... High voltage circuit wirng 7 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent micro wave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm2 for a ful...

Страница 15: ... wind guide 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: ... 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 nuts 2 Remove the insulator heater assembly 3 Reverse the above steps for reassembly ...

Страница 17: ... REMARK C01 7392500008 NUT HEX 6N 2 5 SUS 1 C02 3515000600 SPACER INSULATOR I C3771BD 2 C03 3513301100 INSULATOR HEATER SPP T0 8 1 C04 3512803400 HEATER 230V 1000W 1R67994001 1 C05 7002500613 SCREW MACHINE TRS 5X6 MFCR 1 C06 7002400413 SCREW MACHINE TRS 4X4 MFCR 2 INSULATOR HEATER AS 3513302700 ...

Страница 18: ...closed 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 to bring it under ON condition 3 Adjustment steps 1 Loosen the one mounting screw 2 Adjust interlock switch assembly position 3 Make sure that lock lever moves smoothly after adjustment is completed...

Страница 19: ...oor and turn the timer Does the fuse blow Check continuity of interlock monitor switch with door shut Replace primary secondary interlock switch and interlock monitor switch Replace fuse and check continuity of both interlock switch s contact and monitor switch s contact with door partially open until monitor switch contact Replace primary secondary interlock switch and interlock monitor switch Di...

Страница 20: ...3 3V of high voltage Replace high voltage transformer Check the diode for continuity in the reverse and normal directions Replace high voltage diode Replace magnetron Replace magnetron Meter with 6V or higher voltage batteries should be used to check the normal direction resistance of the diode Check the isolation of filament winding of high voltage transformer Replace high voltage transformer Goo...

Страница 21: ...he water to the 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...

Страница 22: ... on the door cabinet 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 ge...

Страница 23: ...e 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 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 ...

Страница 24: ... WIRING DIAGRAM ...

Страница 25: ... 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: ...5QJ5 CORD POW ER AS 3X1 5 80X70 120 RTML O F11 4413A90012 CLAMP POW ER CORD NYLON66 O F12 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN O F13 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN O F14 7S627W50X1 NUT HEX NUT FL M5X0 8P MFZN O F15 4414A25110 FUSE 250V 15A 65TS O 4414A25100 250V 15A MDA F16 3518606100 NOISE FILTER DW LF M13 O F17 7121403011 SCREW TAPPING T2S PAN 4X30 MFZN O F18 3963513100 MOTOR SH...

Страница 27: ...G T2S PAN 4X6 MFZN O F44 3966310100 MOTOR SYNCRO 220V 2 5W GM 16 24FD12 O 3966310110 220V 2 5W M2LJ49ZT52 F45 3518905300 THERMOSTAT OFF 75 ON 65 H 187 NB O F46 3513003400 HOLDER THERMOSTAT PBT O F47 7272400811 TAPTITE SCREW TT3 TRS 4X8 MFZN O F48 4078502031 BUTTON LOCKING PP HONAM A353 O F49 3511405100 COVER WAVE GUIDE MICA T0 35 O F50 3517400620 COUPLER XAREC O KOG 37B50S 4418D10032 PPS KOG 39B50...

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