LG Electronics LRMM1430SW, LRMM1430SB manual Precautions on Installation, Trial Operation

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2.PRECAUTIONS ON INSTALLATION

(Figure 2)

A.Plug the power supply cord into a 120 V AC, 60 Hz, single-phase power source with a capacity of at least 20 amperes.

B.Since the unit weights about 38 lbs., be sure to place it on a sturdy and flat surface.

C.Avoid placing the unit in a location where there is direct heat or splashing water.

D.Place the unit as far away as possible from TV, radio, etc. to prevent interference.

CAUTION

This unit is equipped with a 3-prong plug for your safety. If the wall outlet is a grounded 3-hole type, the unit will be grounded automatically.

Properly Polarized and

Grounded Outlet

Three-Pronged(Grounding)

Plug

Figure 2

3. GENERAL PRECAUTIONS IN USE

A.Never operate the unit when it is empty. Operating the oven with no load may shorten the life of the magnetron. Whenever cooking dry foods (dried fish, bread, etc.) or a small amount of food, be sure to put a glass of water into the cooking compartment. The turntable tray may become hot after operating, be careful when touching it.

B.Aluminum foil should be avoided because it will disrupt cooking and may cause arcing. However, small pieces may be used to cover some parts of food to slow the cooking. Any aluminum foil used should never be closer than 2.5 cm to any side wall of the oven.

4. TRIAL OPERATION

After installation, the following sequences and results should be checked carefully.

A.Put a container filled with water (about 1 liter) into the oven, and close the door tightly.

B.Touch the STOP/CLEAR and the COOK TIME keys. “0” appears in the display window.

C.Set cooking time for 10 minutes by touching “1” and then “0” three times. “10:00” appears in the display window.

D.Touch the START key.

Make sure the cavity light comes on. The unit will begin cooking and the display window will show the time counting down by seconds.

E.After about 5 minutes, make sure the primary interlock switch, the secondary interlock switch and the interlock monitor and oven lamp switch operate properly by opening and closing the door several times. Touch the START key each time the door is closed.

F.Continue operating the unit. Two short and a long beep sound signal is heard when the time is up. The unit will shut off automatically.

G.Confirm the water is hot.

H.Finally, measure the output power according to “POWER OUTPUT MEASUREMENT” on page 13.

5. FEATURES AND SPECIFICATIONS

A.The safety systems incorporated in this model are:

(1)Primary interlock switch

(2)Secondary interlock switch

(3)Interlock monitor switch

(4)Choke system

(5)Oven cavity thermostat

(Note: This thermostat located on the oven cavity will open and stop the unit from operation only if a high temperature is reached, such as, a fire created by overcooking food.)

B.Any one of 10 power output levels ranging 0W to 1200W can be selected by the touch control and electronic computer system.

C.Cooking time can be displayed on the digital readout.

D.Three different cooking stages (Include Defrost) can be set. The oven remembers three cooking stages and changes from one cooking stage to another. This is made possible with the memory function of the microprocessor.

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Contents Microwave Oven Page Model LRMM1430SW LRMM1430SB Adjust the Latch and Switch Closings Adjustment ProceduresCheck the Door Latch and Switch Closings Test the Latch and Switch SequencePage General Precautions in USE Precautions on InstallationFeatures and Specifications Trial OperationSpecifications Switch ChartOverall Circuit Diagram A. Schematic Diagram Matrix Circuit for Touch KEY Board Operating Procedures A. Control Panel Display Window ClockKitchen Timer Easy USE Chart ClockHI-POWER Cooking MULTI-STAGE CookingMeasuring Microwave Energy Leakage Procedure for Measuring Microwave Energy LeakageEquipment 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 MotorFAN Motor Assembly Removal Interlock SystemInterlock Mechanism Monitor Switch Test Primary Interlock Switch TestSecondary Interlock Switch Test Components Test Procedure ResultsInverter Test and Checkout PROCEDURES, and TroubleshootingTest Procedures Components MagnetronSensor Correct PositionRelay FAN MotorTurntable Motor Checkout Procedures Checkout Procedures for Fuse BlowingProblems Causes Problem B Checkout Procedures for RelayProblem a YES GoodPage Trouble Shooting Condition Cause RemedyCondition CheckResult 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