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LG Electronics LMV1625W, LMV1625B service manual P/NO. 3828W5S3242, Printed in Korea

Models: LMV1625W LMV1625B

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P/NO. 3828W5S3242

	May, 2003
P/NO. 3828W5S3242	Printed in Korea

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LG Electronics LMV1625W, LMV1625B service manual P/NO. 3828W5S3242, Printed in Korea

Contents

SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUALMICROWAVE OVEN MODEL LMV1625B LMV1625WSAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURETO EXCESSIVE MICROWAVE ENERGY TABLE OF CONTENTS FOREWORD1,500W maximum Microwave oven+Cook top lamp+Ventilation fan SPECIFICATIONSMICROWAVE RADIATION CAUTIONSMAGNETRON GasketINSTALLATIONS PRECAUTIONS ON INSTALLATIONGROUNDING INSTRUCTIONS CONTROL PANEL OPERATING INSTRUCTIONSCONTROL PANEL INSTRUCTIONS SCHEMATIC DIAGRAM OVERALL CIRCUIT DIAGRAMMATRIX CIRCUIT FOR TOUCH KEY BOARD GENERAL PRECAUTIONS IN USE GENERAL INFORMATION FOR SERVICEFEATURES AND SPECIFICATIONS FEATURES TRIAL OPERATIONPRECAUTIONS AND REPAIR SERVICE TIPS SERVICE INFORMATIONEQUIPMENT MICROWAVE LEAKAGE TESTIf the oven operates with the door open, the service personnel should Tell the user not to operate the ovenPOWER OUTPUT MEASUREMENT NOTE WHEN MEASURINGMEASUREMENT WITH THE OUTER CASE REMOVED MEASUREMENT WITH A FULLY ASSEMBLED OVENDISASSEMBLY INSTRUCTIONS A. REMOVING POWER AND CONTROL CIRCUIT BOARD Figures 1, 2 andIMPORTANT NOTES HOW TO INSERT THE F.P.C. CONNECTOR HOW TO REMOVE THE F.P.C. CONNECTORB. REMOVING THE OUT CASEFigure C REMOVING THE DOOR INTERLOCK SWITCHES Figures 9,10 D. REMOVING MAGNETRON F. REMOVING DOOR Figure G. DISASSEMBLING DOOR FigureCAUTION Be careful not to damage door seal plate with the screwdriver I. REMOVING THE VENTILATION FANASSY H. ASSEMBLING DOORK. REMOVING THE TURNTABLE MOTOR ADJUSTMENT PROCEDURES INTERLOCK SYSTEMCHECK THE DOOR LATCH AND SWITCH CLOSING ADJUST THE LATCH AND SWITCH CLOSINGTEST THE MICROWAVE ENERGY LEAKAGE TEST THE LATCH AND SWITCH SEQUENCEA. PRIMARY INTERLOCK SWITCH TEST INTERLOCK CONTINUITY TESTB. SECONDARY INTERLOCK SWITCH TEST C. MONITOR SWITCH TESTTEST PROCEDURES TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTINGCOMPONENTS RESULTSCOMPONENTS TEST PROCEDURESRESULTS Figure 25-aCOMPONENTS TEST PROCEDURESRESULTS Measure the resistance between terminalTEST PROCEDURES 1 CHECKOUT PROCEDURES FOR FUSE BLOWINGwCAUTION The relay connector 2White These two connectors are not InterRemove the mate connector of I/O CON from the circuit board 2 CHECKOUT PROCEDURES FOR RELAY PROBLEM ADefective RELAY3 Replace RELAY3 PROBLEM B GOODThe following symptoms indicate a defective circuit board 3 CHECKOUT PROCEDURES FOR CIRCUIT BOARD3 Proper temperature measurement is not obtained 8 Some of the indicators do no flicker light upRuns PROBLEM - C Unit does not heat up even if display counts down when PROBLEM - D No buzzing when touching the key, between Check 1. POWER SUPPLY EXPLODED VIEW DOOR PARTS13552A 13581A 13536A 13213A 13720D WTT021 14890A 14026A 14970A 13650A CONTROLLER PARTS 268711 24781M 24810P WTP018 23572A WTT02923506A 33530A OVEN CAVITY PARTS34930R 35026G 33052A 33550L 36912C WTT022 35230A WTT02143500A LATCH BOARD PARTS466001 WSZ08433390G 34370T INTERIOR PARTSIWSZ002 35889A56912B INTERIOR PARTS36549V 55231C 53550L 56804AWSZ203 INSTALLATION PARTS44360A WSZ098 WSZ133 WSZ204DIAGRAM SCHEMATICPRINTED CIRCUIT BOARD Printed in Korea P/NO. 3828W5S3242