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LG Electronics LMV1625W, LMV1625B service manual Components, Test Procedures, Results, b

Models: LMV1625W LMV1625B

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COMPONENTS	TEST PROCEDURES	RESULTS
	Measure the resistance:	Normal reading:
	(1) Terminal to terminal	Normal reading:
	(1) Terminal to terminal	Momentarily indicates several ohms,
		Momentarily indicates several ohms,
		and then gradually returns to infinite
		ohms.
	Ohm-	Abnormal reading:
	Ohm-	Indicates continuity or infinite ohms
	meter	Indicates continuity or infinite ohms
	meter	from the beginning.
		from the beginning.

HIGH-VOLTAGE	Figure 25-a
CAPACITOR
	(2) Terminal to case	Normal readings:
		Infinite.
		Abnormal reading:
	Ohm-	Indicates continuity.
	meter

Figure 25-b
Measure the continuity:	Normal readings:
(1) Forward	Infinite.
	Abnormal reading:
	continuity.
Ohm-
meter

HIGH-VOLTAGE	Figure 26-a
HIGH-VOLTAGE
DIODE
(1) Reverse	Normal readings:
	continuity.
	Abnormal reading:
Ohm-	Infinite.
meter

Figure 26-b

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Image 27

LG Electronics LMV1625W, LMV1625B service manual Components, Test Procedures, Results, b

Contents

MODEL LMV1625B LMV1625W SERVICE MANUALSAFETY PRECAUTIONS IN THIS MANUAL MICROWAVE OVENSAFETY 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 SPECIFICATIONSGasket CAUTIONSMICROWAVE RADIATION MAGNETRONINSTALLATIONS PRECAUTIONS ON INSTALLATIONGROUNDING INSTRUCTIONS CONTROL PANEL OPERATING INSTRUCTIONSCONTROL PANEL INSTRUCTIONS SCHEMATIC DIAGRAM OVERALL CIRCUIT DIAGRAMMATRIX CIRCUIT FOR TOUCH KEY BOARD TRIAL OPERATION GENERAL INFORMATION FOR SERVICEGENERAL PRECAUTIONS IN USE FEATURES AND SPECIFICATIONS FEATURESPRECAUTIONS AND REPAIR SERVICE TIPS SERVICE INFORMATIONTell the user not to operate the oven MICROWAVE LEAKAGE TESTEQUIPMENT If the oven operates with the door open, the service personnel shouldMEASUREMENT WITH A FULLY ASSEMBLED OVEN NOTE WHEN MEASURINGPOWER OUTPUT MEASUREMENT MEASUREMENT WITH THE OUTER CASE REMOVEDDISASSEMBLY 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 ADJUST THE LATCH AND SWITCH CLOSING INTERLOCK SYSTEMADJUSTMENT PROCEDURES CHECK THE DOOR LATCH AND SWITCH CLOSINGTEST THE MICROWAVE ENERGY LEAKAGE TEST THE LATCH AND SWITCH SEQUENCEC. MONITOR SWITCH TEST INTERLOCK CONTINUITY TESTA. PRIMARY INTERLOCK SWITCH TEST B. SECONDARY INTERLOCK SWITCH TESTRESULTS TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTINGTEST PROCEDURES COMPONENTSFigure 25-a TEST PROCEDURESCOMPONENTS RESULTSMeasure the resistance between terminal TEST PROCEDURESCOMPONENTS RESULTSThese two connectors are not Inter 1 CHECKOUT PROCEDURES FOR FUSE BLOWINGTEST PROCEDURES wCAUTION The relay connector 2WhiteGOOD 2 CHECKOUT PROCEDURES FOR RELAY PROBLEM ARemove the mate connector of I/O CON from the circuit board Defective RELAY3 Replace RELAY3 PROBLEM B8 Some of the indicators do no flicker light up 3 CHECKOUT PROCEDURES FOR CIRCUIT BOARDThe following symptoms indicate a defective circuit board 3 Proper temperature measurement is not obtainedRuns 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 WTT021 OVEN CAVITY PARTS33530A 34930R 35026G 33052A 33550L 36912C WTT022 35230AWSZ084 LATCH BOARD PARTS43500A 46600135889A INTERIOR PARTSI33390G 34370T WSZ00255231C 53550L 56804A INTERIOR PARTS56912B 36549VWSZ204 INSTALLATION PARTSWSZ203 44360A WSZ098 WSZ133DIAGRAM SCHEMATICPRINTED CIRCUIT BOARD Printed in Korea P/NO. 3828W5S3242

Figure 25-a

Figure 25-b

Figure 26-a

Figure 26-b