LG MB-319ML Скачать руководство пользователя страница 39 | Manualshive

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9-2

LOC.

PART NO.

DESCRIPTION

SPECIFICATION

SVC ALTER

NO.
R26

0RD1001F609

RESISTOR,FIXED CARBON FILM

1K OHM 1/6 W 5% TA52

R

R50

0RD1001F609

RESISTOR,FIXED CARBON FILM

1K OHM 1/6 W 5% TA52

R

R51

0RD2700F609

RESISTOR,FIXED CARBON FILM

270 OHM 1/6 W 5% TA52

R

R55

0RD1004F609

RESISTOR,FIXED CARBON FILM

1M OHM 1/6 W 5% TA52

R

R70

0RD2202F609

RESISTOR,FIXED CARBON FILM

22K OHM 1/6 W 5% TA52

R

R71

0RD1202F609

RESISTOR,FIXED CARBON FILM

12K OHM 1/6 W 5% TA52

R

R73

0RD4702F609

RESISTOR,FIXED CARBON FILM

47K OHM 1/6 W 5% TA52

R

R75

0RD4702F609

RESISTOR,FIXED CARBON FILM

47K OHM 1/6 W 5% TA52

R

R80

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R81

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R82

0RD1001F609

RESISTOR,FIXED CARBON FILM

1K OHM 1/6 W 5% TA52

R

R83

0RD4701F609

RESISTOR,FIXED CARBON FILM

4.7K OHM 1/6 W 5% TA52

R

R84

0RD1001F609

RESISTOR,FIXED CARBON FILM

1K OHM 1/6 W 5% TA52

R

R90

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R91

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R92

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R93

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R94

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R95

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

R96

0RD5601F609

RESISTOR,FIXED CARBON FILM

5.6K OHM 1/6 W 5% TA52

R

RY1

6920W5A008A

RELAY

DQ1U DAIICHI 250VAC 3A 12VDC

R

6920W5A007A

RY1

6920W5A008A

RELAY

DQ1U DAIICHI 250VAC 3A 12VDC

R

6920W2D010B

RY1

6920W5A008A

RELAY

DQ1U DAIICHI 250VAC 3A 12VDC

R

6920W2D010A

RY3

6920W2YD04A

RELAY

OZF-S-112LM1P OEG 240VAC 16A

R

6920W5A012A

SW01 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW02 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW03 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW04 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW05 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW06 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW07 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW08 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW09 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

SW10 6600W5R004A

SWITCH,TACT

IT-1102AH-T 200 IN SUNG 15V 20MA

R

U01

0IZZW5A106A

IC,DRAWING

HITACHI 64 DIP BK BRAZIL

R

ZD1

0DZ510009AF

DIODE,ZENERS

UZ-5.1BS PYUNG CHANG TP52 DO34

R

ZD2

0DZ750009BB

DIODE,ZENERS

UZ-7.5BS PYUNG CHANG TP52 DO34

R

R: SERVICE PARTS

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Содержание MB-319ML

Страница 1: ...MICROWAVE OVEN SERVICE MANUAL MODEL MB 319ML MB 319MLA CAUTION BEFORE SERVICING THE UNIT READ THESAFETY PRECAUTIONS IN THIS MANUAL ...

Страница 2: ...tron 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 microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmiss...

Страница 3: ... CIRCUIT DESCRIPTION 4 4 SERVICE INFORMATION 5 1 TOOLS AND MEASURING INSTRUMENTS 5 1 MICROWAVE LEAKAGE TEST 5 1 MEASUREMENT OF MICROWAVE POWER OUTPUT 5 3 DISASSEMBLY AND ADJUSTMENT 5 3 INTERLOCK CONTINUITY TEST 5 7 COMPONENT TEST PROCEDURE 5 8 TROUBLE SHOOTING 5 12 EXPLODED VIEW 6 1 REPLACEMENT PARTS LIST 7 1 SCHEMATIC DIAGRAM OF P C B 8 1 PRINTED CIRCUIT BOARD 8 2 P C B PARTS LIST 9 1 CONTENTS ...

Страница 4: ...L 1 050 Watts Single phase 2 wire grounded 1 000 Watts full microwave power IEC60705 2 450 MHz 2M246 0 99 min 99 sec 530 W x 315 H x 394 D 350 W x 240 H x 365 D 16 3 kg approx 18 7 kg approx Touch Control System Clock 1 00 12 59 Microwave Power for Variable Cooking Power level HIGH Full power throughout the cooking time 9 Saute approx 90 of Full power 8 Reheat approx 80 7 Med High approx 70 6 Medi...

Страница 5: ... operation of the microwave oven requires that the magnetron be assembled to the waveguide and cavity Never operate the magnetron unless it is properly installed Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron 2 1 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free fro...

Страница 6: ...ven should not be installed in any area where heat and steam are generated because they may damage the electronic or mechanical parts of the unit Do not install the oven next to a conventional surface unit or above a conventional wall oven 5 Use microwave oven in an ambient temperature less than 104 F 40 C 6 Place the microwave oven on a sturdy and flat surface at least 10 cm 4 inches from the wal...

Страница 7: ...ogrammed to automatically reheat food 6 AUTO DEFROST To select the desired auto weight defrost programmed with dial 7 AUTO CRISP 8 STOP CLEAR To stop oven and clear all entries except time of day 9 MANUAL 10 START This feature allows oven to begin functioning 11 DISPLAY WINDOW Provides indications of the functions selected normally current time displayed 4 1 OPERATING INSTRUCTIONS Oven Front Plate...

Страница 8: ... Touch and hold Desliga Cancela button DESATIVADO appear on the display TO CANCEL CHILD LOCK Touch the button Touch and hold Desliga Cancela button ATIVADO appears 9 CUSTOM SET You can select ON OFF of beeper language speed DEMO mode To select sound ON OFF To select language speed To select DEMO mode Desliga Cancela Pratos Brosileiros Desliga Cancela Liga Desliga Cancela 1ST STAGE Liga Desliga Can...

Страница 9: ...SCHEMATIC DIAGRAM 4 3 ...

Страница 10: ...ately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor The negative 4 000 Volts DC is applied to the filament of the magnetron WHEN THE OVEN IS SET AT ANY LEVEL EXCEPT MAXIMUM The micom controller controls the ON OFF time of relay 2 by the applied signal to vary the aver...

Страница 11: ...ich is graduated to 600 cc and place the beaker on the center of the turntable Set the energy leakage monitor to 2 450 MHz and use it following the manufacturer s recommended test procedure to assure correct result When measuring the leakage always use the 2 inch 5cm spacer supplied with the probe Operate the oven at its maximum output Measure the microwave radiation using and electromagnetic radi...

Страница 12: ...on The test probe must be removed no faster than 1 inch sec 2 5 cm sec along the shaded area otherwise a false reading may result The test probe must be held with the grip portion of the handle A false reading may result if the operator s hand is between the handle and the probe When testing near a corner of the door keep the probe perpendicular to the surface making sure the probe horizontally al...

Страница 13: ... The microwave power output P in watts is calculated from the following formula 4187 x T T is measured while the microwave generator is operating at full power Magnetron filament heat up time is not included about 3 sec The water is stirred to equalize temperature throughout the vessel prior to measuring the final water temperature Stirring devices and measuring instruments are selected in order t...

Страница 14: ...door NOTE 1 After replacing the door be sure to check that the primary switch monitor switch and secondary switch operate normally 2 After replacing the door check for microwave energy leakage with a survey meter Microwave energy must be below the limit of 4 mW cm with a 275 ml water load 3 When mounting the door assembly to the oven assembly be sure to adjust the door assembly parallel to the cha...

Страница 15: ... to the magnetron To prevent microwave leakage tighten the mounting screws properly making sure there is no gap between the waveguide and the magnetron G REMOVING THE TURNTABLE MOTOR 1 Remove the turntable and rotating ring 2 Lay the unit down on its back 3 Remove the turntable motor cover The turntable base cover is easily removed by pinching the eight parts with a wire cutting 4 Disconnect the l...

Страница 16: ...K MECHANISM The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage 2 MOUNTING OF THE PRIMARY MONITOR SECONDARY SWITCHES TO THE LATCH BOARD 3 INSTALLATION AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN ASSEMBLY Mount the latch board to t...

Страница 17: ... an closed circuit When the secondary switch operation is abnormal make the necessary adjustment or replace the switch only with the same type of switch C MONITOR SWITCH TEST Disconnect the wire lead from the monitor switch Connect the ohmmeter leads to the common COM and normally closed NC terminals of the switch The meter should indicate closed circuit in the door open condition When the door is...

Страница 18: ... PROCEDURE RESULTS HIGH VOLTAGE TRANSFORMER Wire leads removed MAGNETRON Wire leads removed 1 Measure the resistance Ohm meter scale Rx1 and Rx100 Primary winding Secondary winding Filament winding 2 Measure the resistance Ohm meter scale Rx1000 Primary winding to ground Filament winding to ground 1 Measure the resistance Ohm meter scale Rx1 Filament terminal 2 Measure the resistance Ohm meter sca...

Страница 19: ... Terminal to case Measure the continuity Forward Ohm meter scale Rx10000 Measure the continuity Reverse Ohm meter scale Rx10000 Normal Momentarily indicates several ohms and then gradually returns to infinite Normal Infinite Normal Continuity Abnormal Infinite Normal Infinite Abnormal Continuity NOTE When testing the magnetron be sure to install the magnetron gasket in the correct position and be ...

Страница 20: ...ith an Multi meter Normal Gill heater Approx 15 at 20 30ûC Normal more than 1 0M NOTE Make sure heater is fully cooled when tested NOTE If the fuse is blown check primary the secondary the monitor switches H V D and H V C before replacing the fuse If the fuse is blown by improper switch operation replace the defective switch and the fuse at the same time Replace just the fuse if the switches opera...

Страница 21: ...ec 2 6 sec 16 sec 3 8 sec 14 sec 4 10 sec 12 sec 5 12 sec 10 sec 6 14 sec 8 sec 7 16 sec 6 sec 8 18 sec 4 sec 9 20 sec 2 sec 10 22 sec 0 sec Normal A Approx 85 100 ohm B Approx 10 25 ohm Abnormal Infinite or several ohms Normal Approx 100 150 ohm Abnormal Infinite or several ohm NOTE A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON MAKE SURE THE WIRE LEADS...

Страница 22: ... panel to discharge any static charge built up in your body Micom model only CONDITION Microwave oven does not work Inserting many plugs into one outlet and using them at the same time blown fuse or breaker Microwave oven plug is not inserted tightly Output power is too low Low AC input voltage Food temperature is too low Using metallic ware and allowing it to touch the oven wall Sparks occur Inco...

Страница 23: ... does not turn on after setting cooking cycle 11 Display time of day does not reappear when cooking is finished 5 13 TROUBLE 1 The following visual conditions indicate a probable defective control circuit CONDITION CHECK RESULT CAUSE REMEDY 1 No input can be programmed Continuity No continuity Defective PCB assembly Loose connection Replace PCB assembly Connect them tightly Check the conn ection b...

Страница 24: ...of primary switch with door opened Disconnect one side of the wire lead connected from transformer to the high voltage capacitor and operate the unit Replace fuse Continuity Malfunction of secondary switch Replace fuse primary monitor secondary switches and RELAY RY2 of P C B Assembly No continuity Check continuity of secondary switch with door opened 2 Fuse does not blow No continuity Continuity ...

Страница 25: ... all figures set but oven does not start cooking while desired program times are set and START pad is touched TROUBLE 4 Oven seems to be operating but little heat is produced in oven load NOTE Simple test of power output conducted by heating one liter water for one min if available Minimum 8 5 C temperature rise is normal condition CONDITION CHECK RESULT CAUSE REMEDY Output is low Lower than 90 of...

Страница 26: ... 2 and check continuity relay 2 Operate the unit Abnormal Defective high voltage capacitor Replace high voltage capacitor Normal Check high vol tage capacitor Abnormal Defective high voltage diode Replace high voltage diode Normal Check high vol tage diode Abnormal Defective magnetron Replace magnetron Check magnetron TROUBLE 5 No microwave oscillation even though oven lamp and fan motor run Displ...

Страница 27: ...DOOR PARTS LATCH BOARD PARTS CONTROL PANEL PARTS INTERIOR PARTS BASE PLATE PARTS OVEN CAVITY PARTS 6 1 EXPLODED VIEW INTRODUCTION ...

Страница 28: ...6 2 13213A 13552A 13536A 14026A 14970A 13581A 15006A 14890A 13720D DOOR PARTS ...

Страница 29: ...6 3 24510L 268711 WTT028 WTP004 268712 250202 250205 249401 250204 243501 250201 23790D 23572A 250203 24970A 24781S CONTROLLER PARTS ...

Страница 30: ...6 4 33052M 948504 340511 36549S WTP013 948501 WTT010 WTT021 33112U WSZ184 35300S WNZ015 33550H 34036W 33390G 35889A 33390M 34370T 35026G OVEN CAVITY PARTS ...

Страница 31: ...6 5 43501A WSZ085 466001 466003 466001 43500A LATCH BOARD PARTS ...

Страница 32: ... 568771 WSZ002 WSZ002 WSZ002 WSZ002 WTT028 54826A 56930V 56930V 55006F 56549F 54974S WTT037 55900A WSZ002 55262A 56324A 35012A 948502 54810C WTT028 50CZZH 56851D 50FZZA 56912B 34930W 56411A INTERIOR PARTS ...

Страница 33: ...6 7 63302L 63303L 56170D 63302R 948503 WSZ002 WTT021 63303R WTT028 647781 368771 BASE PLATE PARTS ...

Страница 34: ...2A158A BUTTON R 250203 5020W3A141A BUTTON B 250204 5020W2A084A BUTTON R 250205 5020W3A140A BUTTON B 268711 6871W2S234B PWB PCB ASSEMBLY SUB R 268712 6871W2S233A PWB PCB ASSEMBLY SUB R 33052M 3052W3M011C CANOPY MICA R 33112U 3112W1U015S OUT CASE U BENDING R 33390G 3390W1G010A TRAY GLASS R 33390M 3390W1A011A TRAY METAL R 33550H 3550W1A084B COVER HEATER R 34036W 4036W3W001A SEAL R 340511 4051W3A001A ...

Страница 35: ...3B001K 568771 6877W1A283B HARNESS R 56912B 6912W3B002G LAMP DRAWING R 56930V 6930WRT001B THERMOSTAT R 63302L 3302W1A036G BASE PLATE R 63302R 3302W1A035G BASE PLATE R 63303L 3303W1A028M BASE PLATE ASSEMBLY R 63303R 3303W2A004K BASE PLATE ASSEMBLY R 647781 4B73900A LEG R 948501 4850W4C001D CUSHION R 948502 4850W4C001J CUSHION R 948503 3B72244G CUSHION R 948504 3B72244C CUSHION R WNZ015 4B71028B NUT ...

Страница 36: ...8 1 SCHEMATIC DIAGRAM OF P C B ...

Страница 37: ...8 2 PRINTED CIRCUIT BOARD ...

Страница 38: ... 1N4148 PYUNG CHANG TP52 DO35 R D31 0DD414809AD DIODE SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D32 0DD414809AD DIODE SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D33 0DD414809AD DIODE SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R DP1 6302W5A015A DIGITRON HNM 07SS30 7 AMB 314XF W POOL R EN01 6024WRYA06B VOLUME ROTARY ES1005A SEIL 24CLICK LGEAZ R LED1 0DLZW5A003A LED LITEON LTL 12BGE 1 BK GREEN NA R Q01 0TR1...

Страница 39: ... FIXED CARBON FILM 5 6K OHM 1 6 W 5 TA52 R R94 0RD5601F609 RESISTOR FIXED CARBON FILM 5 6K OHM 1 6 W 5 TA52 R R95 0RD5601F609 RESISTOR FIXED CARBON FILM 5 6K OHM 1 6 W 5 TA52 R R96 0RD5601F609 RESISTOR FIXED CARBON FILM 5 6K OHM 1 6 W 5 TA52 R RY1 6920W5A008A RELAY DQ1U DAIICHI 250VAC 3A 12VDC R 6920W5A007A RY1 6920W5A008A RELAY DQ1U DAIICHI 250VAC 3A 12VDC R 6920W2D010B RY1 6920W5A008A RELAY DQ1U...

Страница 40: ...P NO 3828W5S1726 Aug 2002 Printed in Korea ...

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