LG Electronics LRMM1430SW, LRMM1430SB manual Removing Control Circuit Board Figure, Wire

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C.REMOVING CONTROL CIRCUIT BOARD (Figure 10)

(1) Remove out case.

(2) Remove door assembly.

(3) Unfasten two screws.

(4) Lift up and pull out control panel assembly carefully from the cavity.

(5) Remove door frame.

(6) Remove the F.P.C connector from the terminal socket.

(7) Unfasten two screws which tighen the circuit board.

(8) Remove control circuit board from the door panel assembly.

Unfasten screws

Door frame

securing

Control Panel

Remove screw

Circuit Board

F.P.C.Connector

Figure 10

D.SEPARATE CAVITY AND BASE PLATE (Figure 11)

(1) Remove out case.

(2) Remove Door Assembly.

(3) Remove five screws at the base plate. (Front 3 EA, Back 2 EA).

(4) Disconnect the lead wires from filter.

(5) Disconnect all the lead wires from main board.

(6) Disconnect the MGT high voltage lead wire and turn table motor lead wire.

(7) Lift up the cavity and disconnect the fan motor lead wire.

CAUTION: BE CAREFUL NOT TO DAMAGE LEAD

WIRE.

Unfasten screws

Disconnect the lead wires

Figure 11

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Contents Microwave Oven Page Model LRMM1430SW LRMM1430SB Adjustment Procedures Check the Door Latch and Switch ClosingsAdjust the Latch and Switch Closings Test the Latch and Switch SequencePage Precautions on Installation Features and SpecificationsGeneral Precautions in USE Trial OperationSpecifications Switch ChartOverall Circuit Diagram A. Schematic Diagram Matrix Circuit for Touch KEY Board Operating Procedures A. Control Panel Display Window ClockEasy USE Chart Clock HI-POWER CookingKitchen Timer MULTI-STAGE CookingProcedure for Measuring Microwave Energy Leakage EquipmentMeasuring Microwave Energy Leakage Measurement with the OUT Case RemovedMeasurement with a Fully Assembled Oven Record Keeping and Notification After MeasurementDisassembly Instructions Important NotesWire Removing Control Circuit Board FigureAIR Guide Removal Figure Magnetron Removal Removing the Turntable MotorInterlock System FAN Motor Assembly RemovalInterlock Mechanism Primary Interlock Switch Test Secondary Interlock Switch TestMonitor Switch Test Components Test Procedure ResultsTest and Checkout PROCEDURES, and Troubleshooting Test Procedures ComponentsInverter MagnetronSensor Correct PositionFAN Motor RelayTurntable Motor Checkout Procedures for Fuse Blowing Checkout ProceduresProblems Causes Checkout Procedures for Relay Problem aProblem B YES GoodPage Trouble Shooting Condition Cause RemedyCheck ConditionResult Check Result PCBCondition Check Result Cause RemedyNo microwave oscillation Exploded View Door Parts Controller Parts Oven Cavity Parts Latch Board Parts Oven Interior Parts Base Plate Parts Replacement Parts List For Model LRMM1430SBScrew TAPPING,PAN Head For Model LRMM1430SW WTT022 1TTL0402422 Schematic Diagram of P.C.B Printed Circuit Board B. Parts List LOC Description Specification SVC Alter RY1 May