Manuals / LG Electronics / Kitchen Appliance / Microwave Oven

LG Electronics LRMM1430SW, LRMM1430SB manual Printed Circuit Board, Key Pcb Main Pcb

Models: LRMM1430SB LRMM1430SW

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PRINTED CIRCUIT BOARD

PRINTED CIRCUIT BOARD

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LG Electronics LRMM1430SW, LRMM1430SB manual Printed Circuit Board, Key Pcb Main Pcb

Contents

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUALMICROWAVE OVEN MODEL LRMM1430SW LRMM1430SBPRECAUTIONS TO BE OBSERVED BEFORE WARNING TO SERVICE TECHNICIANSMODEL LRMM1430SW LRMM1430SB TABLE OF CONTENTSFOREWORD 1. ADJUSTMENT PROCEDURES ONLY AUTHORIZED SERVICE PERSONNEL SHOULD MAKE THIS ADJUSTMENTCHECK THE DOOR LATCH AND SWITCH CLOSINGS TEST THE MICROWAVE ENERGY LEAKAGELATCH BOARD SECONDARY INTERLOCK SWITCH MONITOR INTERLOCK SWITCH PRIMARY INTERLOCK SWITCHDOOR LATCH 0-1/64 LATCH BOARD A LATCH B2. PRECAUTIONS ON INSTALLATION 5. FEATURES AND SPECIFICATIONS3. GENERAL PRECAUTIONS IN USE 4. TRIAL OPERATIONSPECIFICATIONS SWITCH CHART6. OVERALL CIRCUIT DIAGRAM A. SCHEMATIC DIAGRAM B. MATRIX CIRCUIT FOR TOUCH KEY BOARD 7. OPERATING PROCEDURES A. CONTROL PANEL 12 KITCHEN TIMER Key Used as a kitchen timer 13 POWER Key B. PANEL INSTRUCTIONS Figure1 Display Window 2 SENSOR COOK keyC. EASY USE CHART 1 CLOCK 2 “HI-POWER” COOKING9 KITCHEN TIMER 3 “MULTI-STAGE” COOKING8. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE A. CAUTIONSEQUIPMENT B. MEASURING MICROWAVE ENERGY LEAKAGEE. NOTE WHEN MEASURING SPECIAL TIPD. MEASUREMENT WITH A FULLY ASSEMBLED OVEN F. RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT9. DISASSEMBLY INSTRUCTIONS B. DOOR ASSEMBLY REMOVAL FigureIMPORTANT NOTES A. REMOVING OUT CASE FigureWIRE Disconnect the lead wiresC. REMOVING CONTROL CIRCUIT BOARD Figure 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 A. PRIMARY INTERLOCK SWITCH TEST B. SECONDARY INTERLOCK SWITCH TESTC. MONITOR SWITCH TEST TEST PROCEDURE11. TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTING A. TEST PROCEDURESTEST PROCEDURE CAUTIONSTEST PROCEDURE COMPONENTSRESULTS AntennaTEST PROCEDURE RelayCOMPONENTS RESULTSCAUSES B. CHECKOUT PROCEDURESPROBLEMS 2 CHECKOUT PROCEDURES FOR RELAY 3 The unit with a normal relay continuously operates C. TROUBLE SHOOTING CAUTIONSCONDITION CAUSECONDITION CHECKRESULT CAUSECONDITION CHECKRESULT CAUSECONDITION CHECKRESULT CAUSENOTE Make sure the wire leads correct position CONDITIONCHECK RESULTEXPLODED VIEW INTRODUCTIONDOOR PARTS 15006A13552A 13536ACONTROLLER PARTS WTP002 13551A 268711 23506AOVEN CAVITY PARTS WSZ185 33112U33052A 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 43500ABASE PLATE PARTS WTT028 WTT028 268712 WTT028 35264A 56877256411A 56851H 568771 WTT021 WSZ002 56549F WTT034 WTT028 568711 54974SREPLACEMENT PARTS LIST FOR MODEL LRMM1430SBR,S SERVICE PARTS DESCRIPTIONALTER WTP002FOR MODEL LRMM1430SW R,S SERVICE PARTS DESCRIPTIONALTER 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