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1-1

This microwave oven is designed for household use only.

It is not recommended for commercial purposes.

ITEM

MODEL

Power Requirement

Power Output

Microwave Frequency

Magnetron

Timer

Outside Dimensions

Cavity Dimensions

Net Weight

Shipping weight

Control Complement

Nameplate Location

Accessories

DESCRIPTION

MS-119SE

120 Volts AC 60 Hz

1,500 Watts

Single phase, 3 wire grounded

1100 Watts full microwave power (IEC60705)

2,450 MHz

2M246

0 ~ 99 min. 99 sec.

1/8

(W) x 12 (H) x 15

5/16

(D)

3/8

(W) x 8

7/8

(H) x 14

1/8

(D)

35.7 lbs (approx.)

39 lbs (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 (Medium) - - - - - - - - approx. 60%

5 (Med.-Low) - - - - - - - - - - - - - - - approx. 50%, 4 (Defrost) - - - - - - - - - approx. 40%

3 (Low) - - - - - - - - - - - - - - - - - - - - approx. 30%, 2 (Simmer) - - - - - - - - - approx. 20%

1 (Warm) - - - - - - - - - - - - - - - - - - approx. 10%

Owner's manual

Glass turntable

Rotating ring

Back Side

SPECIFICATIONS

Содержание PRIVILEGE MS-119SE

Страница 1: ...MICROWAVE OVEN SERVICE MANUAL MODEL MS 119SE CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL website http www lgservice com e mail http www lgeservice com techsup html ...

Страница 2: ...rlock 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 transmission line and cavity for proper alignment integrity and connections ...

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 8 COMPONENT TEST PROCEDURE 5 9 TROUBLE SHOOTING 5 13 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: ...ase 3 wire grounded 1100 Watts full microwave power IEC60705 2 450 MHz 2M246 0 99 min 99 sec 201 8 W x 12 H x 155 16 D 133 8 W x 87 8 H x 141 8 D 35 7 lbs approx 39 lbs 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 Medium approx 60 5 ...

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: ...l 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 wall 7 Place the microwave oven as far away as possible from TV RADIO COMPUTER etc to prevent interference GROUNDING INSTRUCTIONS For personal safety this appliance must be fully grounded at all...

Страница 7: ...ting Ring Window Door Screen Control Panel Display Window 1 2 3 TIME 4 5 6 0 7 8 9 POWER Defrost 1 Potato 2 Fresh Vegetable 4 Frozen Entree 5 Ground meat 3 Frozen Vegetable Hot SENSOR REHEAT SENSOR COOK SENSOR DEFROST AUTO COOK POPCORN BEVERAGE STOP CLEAR Ez On CLOCK TIMER More Less START CONTROL PANEL ...

Страница 8: ...OOKING 6 MULTI STAGE COOKING 7 AUTO COOKING 8 CHILD LOCK This oven has a CHILD LOCK feature TO SET CHILD LOCK Touch the STOP CLEAR pad Touch and hold 0 pad LOCKED appear on the display TO CANCEL CHILD LOCK Touch the STOP CLEAR pad Touch and hold 0 pad LOCKED disappears 9 MORE LESS The cook time is adjustable by MORE pad or LESS pad 4 2 STOP CLEAR CLOCK NUMBER STOP CLEAR SENSOR REHEAT SENSOR DEFROS...

Страница 9: ...M MICROWAVE RADIATION FIRE ELECTRICAL SHOCK AND HAZARDS WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURER S SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SHADED AREAS OF THE SCHEMATIC DIAGRAM NOTICE SINCE THIS IS BASIC SCHEMATIC DIAGRAM THE VALUES OF COMPONENTS AND SOME PARTIAL CONNECTIONS ARE SUBJECT TO CHANGE FOR IMPROVEMENT ...

Страница 10: ...roximately 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...

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: ...e 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 along t...

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 to...

Страница 14: ...witch 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 chassis Also adjust so the door has no play between the inner door surface ...

Страница 15: ...L 1 Discharge the high voltage capacitor 2 Disconnect the leadwire from magnetron high voltage transformer and capacitor 3 Remove the screw holding the high voltage transformer to the base plate I FAN MOTOR ASSEMBLY REMOVAL 1 Discharge the high voltage capacitor 2 Disconnect the leadwire from fan motor noise filter and high voltage capacitor 3 Remove the two screws holding the suction guide Ass y ...

Страница 16: ...nate 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 5 6 Wire Leads Turntable Motor SECONDARY SWITCH PRIMARY SWITCH ADJUSTMENT DIRECTION MONITOR SWITCH 3 INSTALLATION AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN ASSEMBLY Mount the latch b...

Страница 17: ...or L PCB Assy Sensor Shield Wire Sensor Connector Holder Pin Sensor Connector HOOK Sensor Connector 1 Remove the screw of the back and on the cavity 2 Separate the Case Sensor L Sensor U 3 Separate the Bracket Sensor U 4 Remove the screw of the PCB Assy 5 Separate the Shield Wire ...

Страница 18: ...ed 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 closed ...

Страница 19: ... 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 20: ...0 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 21: ...8 sec 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 ohm 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 LEA...

Страница 22: ...he 5 pin connector from P C B See Schematic Diagram on page 4 3 RY1 Turn table Fan Motor Oven Lamp SENSOR CONNECTOR Measure the resistance Port Resistance 1 and 2 Approx 470 Kohm 1 and 3 Approx 1 5 Kohm Cooking Start OFF 1 CN1 3 5 BK CONNECTOR SHIELD WIRE WH RD 4 3 2 1 ...

Страница 23: ... 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 24: ... does not turn on after setting cooking cycle 11 Display time of day does not reappear when cooking is finished 5 14 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 25: ...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 26: ...ws 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 ...

Страница 27: ... relay 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...

Страница 28: ...shield wire connector Refer to page 5 12 Replace sensor assy Guide sensor stuck Check and adjust the Guide sensor Refer to schematic diagram and adjust it Unsuitable utensil was used Use suitable utensil Refer to the owner s manual Incorrect connection of shield wire Refer to page 5 12 Replace sensor assy Incorrect resistance of shield wire connector TROUBLE 6 Uneven cooking and error during senso...

Страница 29: ...DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS INTERIOR PARTS BASE PLATE PARTS OVEN CAVITY PARTS 6 1 EXPLODED VIEW INTRODUCTION EV ...

Страница 30: ...6 2 13213A 13552A 13536A 13581A 14026A 14970A 13720D 13352A 15006A DOOR PARTS EV ...

Страница 31: ...6 3 24781M 26638A 23572A 268711 WTP018 23550D 23550D CONTROL PANEL PARTS EV ...

Страница 32: ...6 4 WTP013 35889A 33390G 36549S 33112U WTT021 WTT010 33052A 34036W OVEN CAVITY PARTS EV ...

Страница 33: ...6 5 466003 466001 44510A 466001 43500A WSZ085 LARCH BOARD PARTS EV ...

Страница 34: ...6 6 WTT028 50CZZH 55900A 54810C 56851D 56549F WSZ002 50FZZA 56201A 54974S WTT037 WSZ002 SUCTION GUIDE PARTS EV ...

Страница 35: ...6 7 WSZ002 55262A 56930V 56411A WSZ002 568771 56324A 56912B WSZ002 54980A 535512 56501A 548111 568711 548112 568773 WTT021 WTP002 535511 56201B 34930W INTERIOR PARTS EV ...

Страница 36: ...6 8 WTT028 647781 63302A 56170D WTT021 948503 WSZ002 63303A BASE PLATE PARTS EV ...

Страница 37: ...8 1 SCHEMATIC DIAGRAM OF P C B ...

Страница 38: ...8 2 PRINTED CIRCUIT BOARD ...

Страница 39: ...APR 2001 P NO 3828W5S1792 Printed in Korea ...

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