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LG LMV1683SW User Manual

LG LMV1683SW
49 pages
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MICROWAVE OVEN
SERVICE MANUAL
MODEL: LMV1683ST
LMV1683SB
LMV1683SW
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL30474304
March, 2012
Printed in Korea
Website: http://biz.lgservice.com
Internal Use Only
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LG LMV1683SW Specifications

General IconGeneral
Capacity1.6 cu. ft.
Power Output1000 Watts
Weight30.9 lbs
ColorStainless Steel
TurntableYes
Cooking Levels10
Child LockYes
Control TypeElectronic Touch
FeaturesSensor Cooking, EasyClean
Turntable Diameter12.6 inches
Exterior Dimensions29.88" x 15.38" x 16.50"

Summary

CAUTION: WARNING TO SERVICE TECHNICIANS

Microwave Energy Exposure Precautions

Safety guidelines to avoid exposure to excessive microwave energy during servicing.

FOREWORD

1. SPECIFICATIONS

2. CAUTIONS

Microwave Radiation Safety

Warnings and precautions regarding microwave radiation exposure during operation and servicing.

Service Personnel Qualification

Emphasizes that only qualified personnel should service the oven.

3. INSTALLATION

Installation Precautions

Guidelines for safe and proper installation of the microwave oven.

Grounding Instructions

Importance and procedure for grounding the appliance for electrical safety.

4. OPERATION

4-1. Control Panel Overview

Diagram and layout of the microwave oven's control panel.

4-2. Control Panel Functions

Detailed explanation of each button and function on the control panel.

5. WIRING DIAGRAM / KEY MATRIX

5-1. Wiring Diagram

Schematic representation of the oven's electrical connections and components.

5-2. Key Matrix

Layout of the keypad matrix showing button connections.

6. TROUBLESHOOTING

6-1. General Information for Service

General advice and precautions for service technicians before starting repairs.

6-2. Safety Caution

Critical safety warnings and precautions to prevent injury and damage during troubleshooting.

6-3. Basic Check Summary

A summary of basic checks and symptoms for diagnosing common issues.

No Display or Dead Troubleshooting

Diagnostic flowchart for issues where the oven has no display or is dead.

Keypad Failure Troubleshooting

Step-by-step guide to diagnose and resolve keypad malfunction issues.

No Heat or No Cook Troubleshooting

Diagnostic steps for issues where the oven does not heat or cook.

Turntable Motor Not Working Troubleshooting

Procedures to diagnose and fix problems with the turntable motor.

Automatic Operation Troubleshooting

Troubleshooting steps for when the oven turns on automatically without user input.

7. MICROWAVE LEAKAGE TEST

Safety Cautions for Leakage Testing

Important safety warnings before and during microwave leakage measurement.

Equipment and Measurement Procedure

Lists necessary equipment and steps for measuring microwave energy leakage.

Leakage Measurement Procedures

Detailed steps for measuring leakage with outer case removed and fully assembled oven.

Record Keeping and Notification

Guidelines for recording test results and notifying relevant parties.

8. POWER OUTPUT MEASUREMENT

9. INTERLOCK SYSTEM

9-1. Interlock Mechanism

Description of the door lock mechanism and adjustment procedures.

Test Latch and Switch Sequence

Procedure to test the sequence of interlock switches for proper operation.

Microwave Energy Leakage Test

Testing microwave energy leakage after interlock system checks.

9-2. Interlock Continuity Test

Detailed continuity tests for primary, secondary, and monitor interlock switches.

10. COMPONENT TESTING INFORMATION

Transformer and Magnetron Testing

Procedures and results for testing the transformer and magnetron components.

Capacitor, Diode, Relay 2, Ventilation Motor Testing

Testing procedures and normal/abnormal results for key components.

Turntable Motor and Noise Filter Testing

Procedures for testing the turntable motor and noise filter.

Touch Key Board Testing

Resistance measurement procedures for the touch key board connector.

11. DISASSEMBLY INSTRUCTIONS

Removing Power and Control Circuit Board

Step-by-step guide to remove the main circuit board assembly.

FPC Connector Removal and Insertion

Instructions on how to safely remove and insert FPC connectors.

Removing the Out Case

Steps to disassemble and remove the outer casing of the microwave.

Removing Door Interlock Switches

Procedure to remove and replace the door interlock switch components.

Removing Magnetron and Stirrer Fan

Instructions for removing the magnetron and stirrer fan assemblies.

Door Removal and Ventilation Fan Assembly

Steps for removing the door, disassembling the door, and removing the ventilation fan.

Removing the Turntable Motor

Procedure to remove and replace the turntable motor.

12. EXPLODED VIEW

Introduction and Model Information

Overview of the exploded view section and model identification.

Door Parts

Exploded view illustrating the components of the microwave door assembly.

Controller Parts

Exploded view of the controller unit and its constituent parts.

Oven Cavity Parts

Exploded view of the main oven cavity components.

Latch Board Parts

Exploded view showing the parts associated with the latch board mechanism.

Interior Parts (I)

Exploded view of various interior components, part 1.

Interior Parts (II)

Exploded view of various interior components, part 2.

Installation Parts

Exploded view illustrating parts related to the installation of the microwave.

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