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LG Electronics LRMM1430SB, LRMM1430SW manual Schematic Diagram Of P.C.B

Models: LRMM1430SB LRMM1430SW

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SCHEMATIC DIAGRAM OF P.C.B

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LG Electronics LRMM1430SB, LRMM1430SW manual Schematic Diagram Of P.C.B

Contents

MODEL LRMM1430SW LRMM1430SB BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUALSERVICE MANUAL MICROWAVE OVENWARNING TO SERVICE TECHNICIANS PRECAUTIONS TO BE OBSERVED BEFOREFOREWORD TABLE OF CONTENTSMODEL LRMM1430SW LRMM1430SB TEST THE MICROWAVE ENERGY LEAKAGE 1. ADJUSTMENT PROCEDURESONLY AUTHORIZED SERVICE PERSONNEL SHOULD MAKE THIS ADJUSTMENT CHECK THE DOOR LATCH AND SWITCH CLOSINGSLATCH B LATCH BOARD SECONDARY INTERLOCK SWITCH MONITOR INTERLOCK SWITCHPRIMARY INTERLOCK SWITCH DOOR LATCH 0-1/64 LATCH BOARD A4. TRIAL OPERATION 2. PRECAUTIONS ON INSTALLATION5. FEATURES AND SPECIFICATIONS 3. GENERAL PRECAUTIONS IN USESWITCH CHART SPECIFICATIONS6. OVERALL CIRCUIT DIAGRAM A. SCHEMATIC DIAGRAM B. MATRIX CIRCUIT FOR TOUCH KEY BOARD 7. OPERATING PROCEDURES A. CONTROL PANEL 2 SENSOR COOK key 12 KITCHEN TIMER Key Used as a kitchen timer 13 POWER KeyB. PANEL INSTRUCTIONS Figure 1 Display Window3 “MULTI-STAGE” COOKING C. EASY USE CHART 1 CLOCK2 “HI-POWER” COOKING 9 KITCHEN TIMERB. MEASURING MICROWAVE ENERGY LEAKAGE 8. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGEA. CAUTIONS EQUIPMENTF. RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT E. NOTE WHEN MEASURINGSPECIAL TIP D. MEASUREMENT WITH A FULLY ASSEMBLED OVENA. REMOVING OUT CASE Figure 9. DISASSEMBLY INSTRUCTIONSB. DOOR ASSEMBLY REMOVAL Figure IMPORTANT NOTESD. SEPARATE CAVITY AND BASE PLATE Figure WIREDisconnect the lead wires C. REMOVING CONTROL CIRCUIT BOARD FigureE. AIR GUIDE REMOVAL Figure F. POWER BOARD AND INVERTER MODULE AND SUCTION GUIDE FigureG. SENSOR DUCT REMOVAL Figure I. REMOVING THE TURNTABLE MOTOR H. MAGNETRON REMOVALK. INTERLOCK SYSTEM J. FAN MOTOR ASSEMBLY REMOVAL0.5 mm. 1/64 inch TEST PROCEDURE A. PRIMARY INTERLOCK SWITCH TESTB. SECONDARY INTERLOCK SWITCH TEST C. MONITOR SWITCH TESTCAUTIONS 11. TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTINGA. TEST PROCEDURES TEST PROCEDUREAntenna TEST PROCEDURECOMPONENTS RESULTSRESULTS TEST PROCEDURERelay COMPONENTSPROBLEMS B. CHECKOUT PROCEDURESCAUSES 2 CHECKOUT PROCEDURES FOR RELAY 3 The unit with a normal relay continuously operates CAUSE C. TROUBLE SHOOTINGCAUTIONS CONDITIONCAUSE CONDITIONCHECK RESULTCAUSE CONDITIONCHECK RESULTCAUSE CONDITIONCHECK RESULTRESULT NOTE Make sure the wire leads correct positionCONDITION CHECKINTRODUCTION EXPLODED VIEW13536A DOOR PARTS15006A 13552AWTP002 13551A 268711 23506A CONTROLLER PARTSWTT022 Model LRMM 1430SW W107 Model LRMM 1430SB 33390G 35889A OVEN CAVITY PARTSWSZ185 33112U 33052A43501A 466001 466003 466001 LATCH BOARD PARTSWSZ085 43500A WTT021 WTT028 56501A 54974T 56930V 56912B 56324A WSZ002 43500A OVEN INTERIOR PARTS54974S BASE PLATE PARTSWTT028 WTT028 268712 WTT028 35264A 568772 56411A 56851H 568771 WTT021 WSZ002 56549F WTT034 WTT028 568711FOR MODEL LRMM1430SB REPLACEMENT PARTS LISTWTP002 R,S SERVICE PARTSDESCRIPTION ALTERFOR MODEL LRMM1430SW WTP002 R,S SERVICE PARTSDESCRIPTION ALTERSCHEMATIC DIAGRAM OF P.C.B KEY PCB MAIN PCB PRINTED CIRCUIT BOARDP.C.B. PARTS LIST DESCRIPTION 0IZZW5A191B Printed in Korea P/NO 3828W5S3066