LG Electronics LMV1825SBQ, MV1825SW Removing the Door Interlock Switches Figures 9,10

Page 18

CREMOVING THE DOOR INTERLOCK SWITCHES (Figures 9,10)

(1)Disconnect the wire leads from the interlock switches.

(2)Remove two screws securing the Latch Board.

(3)Make necessary replacements and check microwave energy leakage according to “ADJUSTMENT PROCEDURE” on page 7-12.

Latch Board

Secondary Interlock Switch

WH(from H.V.Transformer)

YL(from Fan Motor)

WH(from Power Cord)

WH(from cooktop lamp)

Monitor Interlock Switch

WH(from H.V.Transformer)

RD(from H.V.Transformer)

Primary Interlock Switch

PK(from P.C.B)

BL(from P.C.B)

Figure 9

Latch Board

Secondary Interlock Switch

Interlock

Monitor Switch

Primary

Interlock Switch

Figure 10

WIRE COLOR

SYMBOL

COLOR

WH

WHITE

BK

BLACK

BR

BROWN

RD

RED

BL

BLUE

PK

PINK

GY

GREY

 

 

N.P.

Not Provided

 

 

7-7

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Contents Safety Precautions in this Manual Microwave OvenPage Table of Contents Specifications Microwave Radiation Installation Grounding InstructionsOperating Instructions Control PanelControl Panel Instructions Overall Circuit Diagram Schematic DiagramMatrix Circuit for Touch KEY Board General Precautions in USE Features and Specifications FeaturesTrial Operation Precautions and Repair Service Tips PreliminaryMicrowave Leakage Test EquipmentPower Output Measurement Measurement with the Outer Case RemovedDisassembly Instructions Important NotesHOW to Remove the F.P.C. Connector HOW to Insert the F.P.C. ConnectorRemoving the OUT CASEFigure Removing the Door Interlock Switches Figures 9,10 Removing Magnetron Removing Stirrer FAN Removing Door FigureAssembling Door Removing the Ventilation MotorReplacing the Humidity Sensor Removing the Turntable Motor Interlock System Interlock MechanismTest the Latch and Switch Sequence Components Test Procedure Results Interlock Continuity TestTest and Checkout PROCEDURES, and Trouble Shooting Test ProceduresHIGH-VOLTAGE Diode FPC Connector Checkout Procedures Power LevelCheckout Procedures for Relay Problem a Checkout Procedures for Circuit Board Trouble Shooting Circuit board Poor Check the contact of relay 2see Normal Operation Circuit board Fuse Exploded View Control Panel Oven Cavity Latch Board Interior 50FZZA Installation Schematic Diagram of P.C.B Printed Circuit Board May