LG Electronics LRMM1430SB, LRMM1430SW manual Disassembly Instructions, Important Notes

Page 15

9.DISASSEMBLY INSTRUCTIONS

IMPORTANT NOTES:

UNIT MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS, ADJUSTMENTS AND CONTINUITY CHECKS. WAIT AT LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED.

THE CAPACITOR SHOULD BE DISCHARGED BY USING INSULATED WIRE - I.E. TEST PROBE CONNECTED TO 10K-OHM RESISTOR IN SERIES TO GROUND.

WHEN RECONNECTING THE WIRE LEADS TO

ANY PART, MAKE SURE THE WIRING CONNECTIONS AND LEAD COLORS ARE CORRECTLY MATCHED ACCORDING TO THE OVERALL CIRCUIT DIAGRAM. (ESPECIALLY SWITCHES AND HIGH VOLTAGE CIRCUIT.)

A. REMOVING OUT CASE (Figure 8)

(1)Unfasten five screws from the rear section.

(2)Unfasten two screws from the side section.

(3)Push the out case back about 1 inch (3cm).

(4)Lift the case from the set.

Figure 8

B. DOOR ASSEMBLY REMOVAL (Figure 9)

(1)Remove out case.

(2)Unfasten two screws for removing deco front.

(3)Disconnect the lead wires from main board and pull that out from the cavity.

(4)Remove the choke cap very carefully with a flat-blade screw driver.

(5)Lift up and pull out Door assembly carefully from the cavity.

CAUTION: Be careful not to damage door seal plate with the screw driver.

Remove deco front

Disconnect the lead wires

Remove choke cap

Choke Cap

Remove door

Figure 9

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Contents Microwave Oven Page Model LRMM1430SW LRMM1430SB Test the Latch and Switch Sequence Adjustment ProceduresCheck the Door Latch and Switch Closings Adjust the Latch and Switch ClosingsPage Trial Operation Precautions on InstallationFeatures and Specifications General Precautions in USESwitch Chart SpecificationsOverall Circuit Diagram A. Schematic Diagram Matrix Circuit for Touch KEY Board Operating Procedures A. Control Panel Clock Display WindowMULTI-STAGE Cooking Easy USE Chart ClockHI-POWER Cooking Kitchen TimerMeasurement with the OUT Case Removed Procedure for Measuring Microwave Energy LeakageEquipment Measuring Microwave Energy LeakageRecord Keeping and Notification After Measurement Measurement with a Fully Assembled OvenImportant Notes Disassembly InstructionsRemoving Control Circuit Board Figure WireAIR Guide Removal Figure Removing the Turntable Motor Magnetron RemovalFAN Motor Assembly Removal Interlock SystemInterlock Mechanism Components Test Procedure Results Primary Interlock Switch TestSecondary Interlock Switch Test Monitor Switch TestMagnetron Test and Checkout PROCEDURES, and TroubleshootingTest Procedures Components InverterCorrect Position SensorRelay FAN MotorTurntable Motor Checkout Procedures Checkout Procedures for Fuse BlowingProblems Causes YES Good Checkout Procedures for RelayProblem a Problem BPage Condition Cause Remedy Trouble ShootingCondition CheckResult PCB Check ResultCause Remedy Condition Check ResultNo microwave oscillation Exploded View Door Parts Controller Parts Oven Cavity Parts Latch Board Parts Oven Interior Parts Base Plate Parts For Model LRMM1430SB Replacement Parts ListScrew 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