LG Electronics LRMM1430SB, LRMM1430SW manual Relay, FAN Motor, Turntable Motor

Page 23

COMPONENTS		TEST PROCEDURE				RESULTS

RELAY	Check for continuity of relay with an				Normal: Approx.
	ohm-meter.				Normal: Approx.
	ohm-meter.				ON: 0 ohm
	(Remove lead wires from relay and				ON: 0 ohm
	(Remove lead wires from relay and				OFF: ∞	ohms
	operate the unit.)				OFF: ∞	ohms
	operate the unit.)				Abnormal: Infinite or several
					Abnormal: Infinite or several
						ohms.

Relay 2

FAN MOTOR	Measure the resistance.		Normal: Approx. 50 ~ 150 ohms
(Wire leads removed)	(Ohm-meter scale: R x 100)		Normal: Approx. 50 ~ 150 ohms
(Wire leads removed)	(Ohm-meter scale: R x 100)		Abnormal: Infinite or several
			Abnormal: Infinite or several
	B(BK)		ohms.
	A(RD)
	C(WH)

TURNTABLE MOTOR

(Wire leads removed)

Measure the resistance. (Ohm-meter scale: R x 1000)

Normal: Approx. 2 ~ 4K ohms

Abnormal: Infinite or several ohms.

NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.

•MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.

•WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.

-22-

Image 23

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 RemovalInterlock Mechanism FAN Motor Assembly RemovalInterlock System Components Test Procedure Results Primary Interlock Switch TestSecondary Interlock Switch Test Monitor Switch TestMagnetron Test and Checkout PROCEDURES, and TroubleshootingTest Procedures Components InverterCorrect Position SensorTurntable Motor RelayFAN Motor Problems Causes Checkout ProceduresCheckout Procedures for Fuse Blowing YES Good Checkout Procedures for RelayProblem a Problem BPage Condition Cause Remedy Trouble ShootingResult ConditionCheck 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