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2. CONTROL PANEL ASSEMBLY

1) KOT-150S0A, KOT-151SOA, KOT-152U0A, KOT-152C0A

REF. NO.

PART NAME

DESCRIPTION

PART CODE

Q’TY

REMARK

BLACK

KOT-150S0A

3518522300

BISQUE
WHITE
BLACK

KOT-151S0A

351822310

BISQUE
WHITE

B00

SWITCH MEMBRANE

BLACK

KOT-152U0A

351822320

BISQUE
WHITE
BLACK

KOT-152C0A

3518522330

BISQUE
WHITE
BLACK

3516722700

BISQUE
WHITE
BLACK

B01

CONTROL PANEL

3516722710

BISQUE
WHITE
BLACK

3516722720

BISQUE
WHITE

B02

BACK PLATE

SECC T0.6

3516802100

KOT-150S0A

SECC T0.6

3516802110

KOT-151S0A, 152U0A

B03

PCB AS

KOT-150S0A, KOT-151S0A

3514324410

KOT-152U0A

3514324400

B04

SCREW TAPPING

T2S TRS 4X12 MFZN

7122401211

KOT-

150S0A

KOT-

151S0A

KOT-

152U0A
152C0A

Содержание KOT-150S0A

Страница 1: ...Service Manual Microwave Oven Model KOT 150S0A KOT 151S0A KOT 152U0A KOT 152C0A KOT 155S0A DAEWOO ELECTRONICS CO LTD S M No T150S0A003 http svc dwe co kr Feb 2002...

Страница 2: ...e gen erating compartments check the magnetron wave guide or transmission line and cavity for proper align ment integrity and connections d Any defective or misadjusted components in the interlock mon...

Страница 3: ...make repairs 1 A broken door hinge 2 A broken door viewing screen 3 A broken front panel oven cavity 4 A loosened door lock 5 A broken door lock The door gasket plate and oven cavity surface should be...

Страница 4: ...ing Forced air Microwave Distribution Stirring fan disk and turntable Rectification voltage doubler half wave Door Sealing Choke System Safety Device Cavity Thermostat open 194 90 reset 32 0 Bottom Th...

Страница 5: ...4 EXTERNAL VIEW REFER TO THE INSTALLATION GUIDE INSTALLATION REFER TO THE INSTALLATION GUIDE OPERATIONS AND FUNCTIONS REFER TO THE USE AND CARE MANUAL...

Страница 6: ...t the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped an electric charge remains in the high voltage capacitor When replacing or checking parts short...

Страница 7: ...CABINET INSTALLATION Refer to FIG 1 for the following steps 1 Position the cabinet over the top of the microwave oven and slide the power cord all the way through the top opening 2 Slide the cabinet...

Страница 8: ...7 FIG 1...

Страница 9: ...ee FIG 1 3 Remove the screw from the top center tab of the control panel 4 From the top and back of the control panel lift the top locking tab and pull the top of the panel out slightly then lift the...

Страница 10: ...s or lint 7 Mount the new control circuit board to the mounting bracket with 4 screws 8 Plug the following connectors over their control circuit board plugs so that they lock into place a 2 Pin connec...

Страница 11: ...r motor to the oven with its two mounting screws 6 Connect the wires to the stirrer motor terminals 7 Reinstall stirrer motor cover 8 Refer to Cabinet Installations and reinstall the vent grille on th...

Страница 12: ...new socket in its place with its mounting screw 5 Reattach the wire connectors over the light socket terminals 6 Reinstall the cavity lamp bracket into its air guide top and secure the cavity lamp br...

Страница 13: ...om the top and back of the control panel pull out the Fuse Holder 5 Without touching the metal ends remove the defective line fuse from its holder and install a new one in its place 6 Mount the contro...

Страница 14: ...emove it then install a new capacitor in its place 6 Reconnect the wires to the new vent motor capacitor terminals as shown in the FIG 6 7 Reinstall the control panel and the vent grille on the microw...

Страница 15: ...to FIG 7 for the following steps 6 Remove the two mounting screws from the interlock switch assembly and position the assembly so you can easily access the switches and wiring 7 Refer to REMOVE SWITC...

Страница 16: ...ck Monitor Switch provides an added safety check on the Primary and Secondary Interlock Switches If the Primary and Secondary Interlock Switches allow the oven to operate with the door open the Monito...

Страница 17: ...for the following steps 6 Remove the mounting screw from the bottom thermostat and lift the bottom flange out at slot in the chassis See FIG 8 7 Unplug the two wire connectors from the bottom thermos...

Страница 18: ...tor to the oven with its the screws 6 Connect the wires to the tray motor terminal 7 Reinstall the base plate in the oven 8 Secure its 4 screws WARNING Personal Injury Hazard Disconnect from the elect...

Страница 19: ...he orange and brown wires over the light socket terminals 5 Mount the base plate to the microwave oven WARNING Personal Injury Hazard Disconnect from the electrical supply before servicing the unit Fa...

Страница 20: ...njury Hazard Disconnect from the electrical supply before servicing the unit Failure to do so could result in electrical shock or other personal injury CAUTION Personal Injury Hazard Because of the we...

Страница 21: ...sket along the edges of the door with a putty knife 3 Install the new gasket so that it fits tightly into place inside the door WARNING Personal Injury Hazard Disconnect from the electrical supply bef...

Страница 22: ...re connectors from the cavity thermostat See FIG 13 2 8 Install the new cavity thermostat and reinstall the air guide top vent motor cabinet and vent grille on the microwave oven WARNING Personal Inju...

Страница 23: ...22 FIG 13 1 FIG 13 2...

Страница 24: ...motor 5 Install the new vent motor and secure the vent motor 6 Connect the wire connector and secure the vent motor 7 Mount the control panel to the oven and secure it with its mounting screw 8 Refer...

Страница 25: ...or housing with the two mounting screws 8 Slide the fan blade 9 Connect the fan motor wires to the fan motor terminals Reassembly 1 Connect the wiring to the control panel circuit board and then mount...

Страница 26: ...s lock together 8 Route the green wire under the cover and mount the eyelet to the chassis with the screw you removed earlier 9 Refer to Cabinet Installation and reinstall the cabinet and the vent gri...

Страница 27: ...upply before servicing the unit Failure to do so could result in electrical shock or other personal injury CAUTION Personal Injury Hazard Because of the weight and and size of the microwave oven two p...

Страница 28: ...steps 5 Unplug the five high voltage transformer wire connectors and remove high voltage transformer 6 Mount the new high voltage transformer to the plate with 4 mounting screws you removed earlier 7...

Страница 29: ...nd of the high voltage rectifier lead to the bracket with its mounting screw FIG 18 WARNING Personal Injury Hazard Disconnect from the electrical supply before servicing the unit Failure to do so coul...

Страница 30: ...emove the old capacitor WARNING Personal Injury Hazard Disconnect from the electrical supply before servicing the unit Failure to do so could result in electrical shock or other personal injury CAUTIO...

Страница 31: ...the front end of the capacitor and tighten the screw just enough to hold the capacitor in place 8 Connect the end of the high voltage rectifier and red wire coming from the high voltage transformer to...

Страница 32: ...Support the magnetron with one hand while you remove the screws with the other so that the magnetron does not fall as you remove it FIG 20 WARNING Personal Injury Hazard Disconnect from the electrica...

Страница 33: ...to the top of the chassis with its four mounting hex unts Make sure that you tighten the nuts securely 11 Connect the red high voltage leads to the magnetron terminals 12 Refer to Cabinet Installation...

Страница 34: ...manual by time cooking in order to find the exact cause of any trouble TROUBLE 1 Oven does not operate at all any input can not be accepted CONDITION CHECK Check continuity of interlock monitor switch...

Страница 35: ...ter of approximately 190 mm 3 The oven and the empty vessel are at ambient temperature prior to the start of the test The initial temperature of the water is 10 2 C 50 3 6 F It is measured immediately...

Страница 36: ...omagnetic energy leakage monitor NARDA 8100B HOLADAYH1501 600 cc glass beaker with an inside diameter of approx 8 5cm 3 5in Glass thermometer 100 C or 212 F When checking for R F leakage use an approv...

Страница 37: ...faces faster than 1 inch per second 2 5 cm sec otherwise a false reading will occur When testing near a corner of the door keep the probe perpendicular to the surface and move it horizontally with out...

Страница 38: ...cut out The cavity thermal cut out is located air guide top This thermal cut out is normally closed and will open at a set temperature to disable the oven The bottom thermal cut out is located direct...

Страница 39: ...erviced for any reason NOTE Replace the magnetron if the checks and all of the high voltage component tests are good but the unit still does not heat a load 1 Set the ohmmeter to the Rx1 scale and mea...

Страница 40: ...et the ohmmeter to the R x 1 scale and measure across the terminals Set the ohmmeter to the R x 1 scale and measure the a High speed windings blue and black wires b Low speed windings blue and white w...

Страница 41: ...Set the ohmmeter to the Rx1 scale and measure forward resistance across the rectifier terminals with the lead touching the anode and the lead touching the cathode a Normal The meter indicates several...

Страница 42: ...heck is interlock monitor switch primary and secondary interlock switches check 1 In case of interlock monitor switch check 2 In case of primary interlock switch check Condition 1 Door is opened 2 Com...

Страница 43: ...42 WIRING DIAGRAM 1 WIRING DIAGRAM...

Страница 44: ...ools the magnetron by blowing the air coming from the intake on the rear plate hole 3 The oven lamp lights the inside of the oven 4 Indicator light turns on to indicate function operation Cooking time...

Страница 45: ...en auto defrost is selected and the desired defrosting time is chosen the automatic cycle divides the defrosting time into 5 periods of alternating defrost and stand times by cycling on and off 4 When...

Страница 46: ...hen the CANCEL OFF pad is touched during cooking 1 The touch control circuit the voltage supplied to the RELAY 1 coil and causes the magnetron to stop oscillating 2 RELAY 5 and 6 turns off 3 The displ...

Страница 47: ...r changes in proportion to fluctuation of power source voltage NOTE The allowable tolerance of the secondary voltage is within 5 of normal voltage NOTE Each measure point must be measured with GND poi...

Страница 48: ...oesn t come on from G1 to G7 SEGMENT d doesn t come on from G1 to G7 SEGMENT e doesn t come on from G1 to G7 SEGMENT f doesn t come on from G1 to G7 SEGMENT g doesn t come on from G1 to G7 SEGMENT h d...

Страница 49: ...r in display comes on Cause RELAY 6 does not operate CHECK METHOD When touching START pad oven lamp turns on Fan motor and turntable rotate and cook indicator in display comes on Cause RELAY 1 does no...

Страница 50: ...CHECK METHOD If clock does not keep exact time you must check resistor R20 transistor Q6 STAGE POINT 1 DOOR OPEN 2 DOOR CLOSED A OPEN CLOSED B 5VDC GND CHECK NO METHOD REMEDY 1 Check the stage ON OFF...

Страница 51: ...ating check the point A B C D after 1 2 minutes R 6 10 connecting status of humidity sensor must be checked before checking point A B C D NO 1 2 3 4 CHECK POINT A B C D REMARK 0 5V VALUE 3 5V 11 3Vdc...

Страница 52: ...ssembly 1 Incomplete segments A Segments missing B Partial segments missing C Digit flickering other than normal fluorescent slight flickering D TOUCH CLOCK PAD TO ENTER TIME OF DAY does not disply wh...

Страница 53: ...EVERAGE 3 MINUTE ADD FROZEN VEGETABLE OFF vent fan light 2 POPCORN FAVORITE CHOICE BEVERAGE BAKED POTATO PLATE DINNER PIZZA FROZEN VEGETABLE FROZEN COOK SENSOR TIME COOK AUTO DEFROST MINUTE ADD POWER...

Страница 54: ...pad Between A and H 2 1 pad Between B and H 3 2 pad Between C and H 4 3 pad Between D and H 5 4 pad Between E and H 6 5 pad Between F and H 7 6 pad Between G and H 8 7 pad Between A and I 9 8 pad Betw...

Страница 55: ...LOCK AUTO START pad Between D and K 26 AUTO DEFROST pad Between E and K 27 COOK TIME pad Between F and K 28 POWER LEVEL MORE LESS pad Between G and K 29 LIGHT OFF pad Between A and L 30 LIGHT NIGHT pa...

Страница 56: ...55 2 COMPONENT INFORMATION 1 TRANSISTOR 2 DIODE AND ZENER DIODE 2 COMPONENT INFORMATION 1 TRANSISTOR...

Страница 57: ...56 3 PRINTED CIRCUIT BOARD FILM...

Страница 58: ...57...

Страница 59: ...58 4 PCB CIRCUIT DIAGRAM...

Страница 60: ...ONNECTOR WAFER CN4 35328 0610 4CW3061MXO 1 15 CONNECTOR WAFER CN5 YM396 05VA 3519150510 1 16 DIODE SWITCHING D1 D15 D17 D18 1N4148 AUTO 52mm DZN4148 17 17 DIODE RECTIFYING D16 D19 D24 1N4004A AUTO 52m...

Страница 61: ...2W 150 Ohm 5 RD 2Z151JS 2 KOT 151S KOT 155S 48 RESISTOR FUSIBLE R28 1 4W 1 Ohm 5 RF AZ109J 1 49 RESISTOR R29 1 2W 27 Ohm 5 RD 2Z270JS 1 50 RESISTOR R30 1 6W 47K Ohm 5 RD AZ473J 1 51 RESISTOR ARRAY RA1...

Страница 62: ...HITE BLACK A02 BARRIER SCREEN O TEMP GLASS T3 2 3517006200 1 BISQUE WHITE BLACK A03 SUPPORTER BARR S O ABS XR 401 H 2938 3515307000 1 BISQUE WHITE BLACK A04 DOOR PAINTING AS KOT 150S0A 3511712300 1 BI...

Страница 63: ...BLACK A02 BARRIER SCREEN O TEMP GLASS T3 2 3517006210 1 BISQUE WHITE A03 FRAME DOOR HANDLE SILICON RUBBER 3517304100 1 BLACK A04 DOOR PAINTING AS KOT 150S0A 3511712300 1 BISQUE WHITE A05 HOOK POM 351...

Страница 64: ...TEMP GLASS T3 2 3517006220 1 BISQUE WHITE BLACK A03 HANDLE DOOR I PC 3512602920 1 BISQUE WHITE BLACK A04 DOOR PAINTING AS KOT 150S0A 3511712300 1 BISQUE WHITE A05 HOOK POM 3513101200 1 A06 SPRING HOO...

Страница 65: ...RTER HANDLE PC 3515307910 1 BISQUE WHITE BLACK A04 DOOR PAINTING AS KOT 150S0A 3511712300 1 BISQUE WHITE A05 HOOK POM 3513101200 1 A06 SPRING HOOK PW1 3515101800 1 A07 SCREW TAPPING T2S TRS 4X16 MFZN...

Страница 66: ...U0A 351822320 1 BISQUE WHITE BLACK KOT 152C0A 3518522330 1 BISQUE WHITE BLACK PC 3516722700 1 BISQUE WHITE BLACK B01 CONTROL PANEL PC 3516722710 1 BISQUE WHITE BLACK PC 3516722720 1 BISQUE WHITE B02 B...

Страница 67: ...ACK B00 SWITCH MEMBRANE KOT 155S0A 3518522340 1 BISQUE WHITE B01 DECORATOR C PANEL STS430 T0 5 3511609200 1 BLACK B02 CONTROL PANEL PC 3516722730 1 BISQUE WHITE B03 BACK PLATE SECC T0 6 3516802110 1 K...

Страница 68: ...67 3 TOTAL ASSEMBLY...

Страница 69: ...KCPSWLF10 1 BISQUE WHITE BLACK KOT 155S0A PKCPSWLD10 1 BISQUE WHITE F00 SCREW TAPPIMG TI TRS 4X10 MFZN 7112401011 1 F01 HARNESS LAMP KOT 150S0A 3512766700 1 F02 SCREW TAPPING TI TRS 4X10 MFZN 71124010...

Страница 70: ...519000 1 F30 SCREW TAPPING TI TRS 4X10 MFZN 7112401011 1 F31 PROTECTOR WIRE SECC T0 6 3515703700 1 F32 LOCK POM 3513804700 1 F33 LEVER LOCK POM 3513700800 1 F34 SW MICRO VP531A OF SZM V16 FA 61 4415A6...

Страница 71: ...50V 75W 3513003000 1 F69 COVER MOTOR SYNCRO SECC T0 5 3511406700 1 F70 SCREW SPECIAL T1 TRS 4X16 SE MFZN 7S312X40D1 1 F71 SCREW SPECIAL T1 TRS 4X16 SE MFZN 7S312X40D1 3 F72 SENSOR HUMIDITY DH 1 D2 351...

Страница 72: ...S M NO T150S0A003 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 Feb 2002...

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