Manuals / LG Electronics / Kitchen Appliance / Microwave Oven

LG Electronics LRMM1430SW Base Plate Parts, WTT028 WTT028 268712 WTT028 35264A 568772, 54974S

Models: LRMM1430SB LRMM1430SW

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BASE PLATE PARTS

WTT028

268712 WTT028

35264A

568772

56411A

56851H

568771

WTT021

WSZ002

56549F WTT034

WTT028

568711

	54974S
55900A
50FZZA	43501A
55238A
56201A
54980A

63302A

65006B

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Page 38

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LG Electronics LRMM1430SW Base Plate Parts, WTT028 WTT028 268712 WTT028 35264A 568772, 54974S, 55900A, 50FZZA, 55238A

Contents

MICROWAVE OVEN BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUALSERVICE MANUAL MODEL LRMM1430SW LRMM1430SBPRECAUTIONS TO BE OBSERVED BEFORE WARNING TO SERVICE TECHNICIANSMODEL LRMM1430SW LRMM1430SB TABLE OF CONTENTSFOREWORD CHECK THE DOOR LATCH AND SWITCH CLOSINGS 1. ADJUSTMENT PROCEDURESONLY AUTHORIZED SERVICE PERSONNEL SHOULD MAKE THIS ADJUSTMENT TEST THE MICROWAVE ENERGY LEAKAGEDOOR LATCH 0-1/64 LATCH BOARD A LATCH BOARD SECONDARY INTERLOCK SWITCH MONITOR INTERLOCK SWITCHPRIMARY INTERLOCK SWITCH LATCH B3. GENERAL PRECAUTIONS IN USE 2. PRECAUTIONS ON INSTALLATION5. FEATURES AND SPECIFICATIONS 4. TRIAL OPERATIONSPECIFICATIONS SWITCH CHART6. OVERALL CIRCUIT DIAGRAM A. SCHEMATIC DIAGRAM B. MATRIX CIRCUIT FOR TOUCH KEY BOARD 7. OPERATING PROCEDURES A. CONTROL PANEL 1 Display Window 12 KITCHEN TIMER Key Used as a kitchen timer 13 POWER KeyB. PANEL INSTRUCTIONS Figure 2 SENSOR COOK key9 KITCHEN TIMER C. EASY USE CHART 1 CLOCK2 “HI-POWER” COOKING 3 “MULTI-STAGE” COOKINGEQUIPMENT 8. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGEA. CAUTIONS B. MEASURING MICROWAVE ENERGY LEAKAGED. MEASUREMENT WITH A FULLY ASSEMBLED OVEN E. NOTE WHEN MEASURINGSPECIAL TIP F. RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENTIMPORTANT NOTES 9. DISASSEMBLY INSTRUCTIONSB. DOOR ASSEMBLY REMOVAL Figure A. REMOVING OUT CASE FigureC. REMOVING CONTROL CIRCUIT BOARD Figure WIREDisconnect the lead wires D. SEPARATE CAVITY AND BASE PLATE FigureG. SENSOR DUCT REMOVAL Figure F. POWER BOARD AND INVERTER MODULE AND SUCTION GUIDE FigureE. AIR GUIDE REMOVAL Figure H. MAGNETRON REMOVAL I. REMOVING THE TURNTABLE MOTOR0.5 mm. 1/64 inch J. FAN MOTOR ASSEMBLY REMOVALK. INTERLOCK SYSTEM C. MONITOR SWITCH TEST A. PRIMARY INTERLOCK SWITCH TESTB. SECONDARY INTERLOCK SWITCH TEST TEST PROCEDURETEST PROCEDURE 11. TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTINGA. TEST PROCEDURES CAUTIONSRESULTS TEST PROCEDURECOMPONENTS AntennaCOMPONENTS TEST PROCEDURERelay RESULTSCAUSES B. CHECKOUT PROCEDURESPROBLEMS 2 CHECKOUT PROCEDURES FOR RELAY 3 The unit with a normal relay continuously operates CONDITION C. TROUBLE SHOOTINGCAUTIONS CAUSERESULT CONDITIONCHECK CAUSERESULT CONDITIONCHECK CAUSERESULT CONDITIONCHECK CAUSECHECK NOTE Make sure the wire leads correct positionCONDITION RESULTEXPLODED VIEW INTRODUCTION13552A DOOR PARTS15006A 13536ACONTROLLER PARTS WTP002 13551A 268711 23506A33052A OVEN CAVITY PARTSWSZ185 33112U WTT022 Model LRMM 1430SW W107 Model LRMM 1430SB 33390G 35889AWSZ085 43500A LATCH BOARD PARTS43501A 466001 466003 466001 OVEN INTERIOR PARTS WTT021 WTT028 56501A 54974T 56930V 56912B 56324A WSZ002 43500A56411A 56851H 568771 WTT021 WSZ002 56549F WTT034 WTT028 568711 BASE PLATE PARTSWTT028 WTT028 268712 WTT028 35264A 568772 54974SREPLACEMENT PARTS LIST FOR MODEL LRMM1430SBALTER R,S SERVICE PARTSDESCRIPTION WTP002FOR MODEL LRMM1430SW ALTER R,S SERVICE PARTSDESCRIPTION WTP002SCHEMATIC DIAGRAM OF P.C.B PRINTED CIRCUIT BOARD KEY PCB MAIN PCBP.C.B. PARTS LIST DESCRIPTION 0IZZW5A191B P/NO 3828W5S3066 Printed in Korea

BASE PLATE PARTS

WTT028

56411A

54974S

55900A

50FZZA

43501A

55238A

56201A

54980A

63302A