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LG LMV1630BB - User Manual

LG LMV1630BB
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MICROWAVE OVEN
SERVICE MANUAL
MODEL: LMV1630WW
LMV1630BB
LMV1630ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : 382885S0009
January, 2006
Printed in Korea
Website: http://us.lgservice.com

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Summary

LG Microwave Oven Service Manual

Model Information

Details the specific LG microwave models covered by this manual.

Service Technician Safety Precautions

Microwave Energy Exposure Prevention

Guidelines for avoiding microwave energy exposure during servicing.

Foreword and Manual Usage

Manual Usage Warning

Emphasizes careful reading to avoid microwave energy exposure.

Microwave Oven Specifications

Technical Specifications

Details power, output, frequency, dimensions, and components.

Switch Chart

Describes the states of the interlock switches under different conditions.

General Cautions and Microwave Safety

High-Voltage and High-Current Precautions

Warns about dangers during repair and specific handling instructions.

Microwave Radiation Safety

Guidelines for preventing microwave energy exposure.

Appliance Installation and Grounding

Installation Precautions

Advice on placement and power connection for the microwave.

Grounding Instructions

Importance and procedure for grounding the appliance for safety.

Operating the Microwave Oven

Control Panel Layout

Identifies and illustrates the control panel buttons.

Control Panel Button Guide

Button Descriptions

Detailed explanation of each button's function and operation.

Electrical Circuit Schematics

Overall Schematic Diagram

Provides the main circuit diagram for the appliance.

Touch Key Board Matrix Circuit

Key Matrix Diagram

Illustrates the internal matrix connection of the touch keys.

Service Information and Precautions

General Precautions for Use

Advises on safe operation and usage of the microwave.

Trial Operation Checks

Steps to verify proper installation and initial operation.

Key Features and Safety Systems

Highlights important operational features and safety mechanisms.

Service Safety and Repair Tips

High Voltage Circuit Care

Emphasizes caution when working with high voltage circuits.

Microwave Leakage Prevention

Steps to avoid microwave energy leakage during servicing.

Microwave Leakage Measurement

Leakage Test Cautions

Advisories before and during microwave leakage testing.

Required Equipment

Lists the necessary tools for leakage testing.

Measuring Procedure

Details the method for measuring microwave energy leakage.

Leakage and Power Measurement Procedures

Measurement Without Outer Case

Leakage testing steps with the outer case removed.

Measurement With Assembled Oven

Leakage testing steps with the oven fully assembled.

Power Output Measurement

Procedure for measuring the oven's power output.

Component Disassembly Guide

Removing Power and Control Circuit Board

Steps to remove the main circuit board assembly.

FPC Connector Removal and Insertion

Removing FPC Connector

Step-by-step guide to disconnect the FPC connector.

Inserting FPC Connector

Step-by-step guide to connect the FPC connector.

Outer Case Removal Procedure

Removing the Outer Case

Instructions for disassembling the main outer casing.

Door Interlock Switch Servicing

Removing Door Interlock Switches

Steps to remove the door interlock switch assembly.

Magnetron and Stirrer Fan Removal

Removing the Magnetron

Detailed instructions for magnetron removal.

Removing the Stirrer Fan

Instructions for removing the stirrer fan assembly.

Door and Ventilation System Service

Removing and Assembling the Door

Procedures for door disassembly and reassembly.

Removing Ventilation Fan Assembly

Steps to remove the ventilation fan unit.

Turntable Motor Removal

Removing the Turntable Motor

Instructions for removing the turntable motor.

Door Latch and Interlock Adjustment

Interlock Mechanism Overview

Description of the door lock mechanism.

Adjustment Procedures

Steps for adjusting door latches and interlock switches.

Latch and Switch Closing Check

Procedure to check door latch and switch alignment.

Interlock Sequence and Leakage Testing

Latch and Switch Sequence Test

Verifying the correct sequence of interlock switches.

Microwave Energy Leakage Test

Final leakage test after adjustments.

Interlock Switch Continuity Checks

Primary Interlock Switch Test

Continuity test for the primary interlock switch.

Secondary Interlock Switch Test

Continuity test for the secondary interlock switch.

Monitor Switch Test

Continuity test for the monitor interlock switch.

Transformer and Magnetron Testing

Transformer Testing

Resistance tests for transformer windings.

Magnetron Testing

Resistance tests for magnetron terminals and chassis.

Capacitor, Diode, Relay, Fan Motor Testing

Capacitor and Diode Testing

Resistance and continuity tests for capacitor and diode.

Relay 2 and Fan Motor Testing

Continuity and resistance tests for relay and fan motor.

Ventilation, Turntable, Stirrer Motor Tests

Ventilation Motor Testing

Resistance tests for ventilation motor speeds.

Turntable and Stirrer Motor Testing

Resistance tests for turntable and stirrer motors.

Touch Key Board Resistance Testing

Touch Key Board Resistance Test

Measuring resistance of the touch key board connector pins.

Checkout Procedures for Fuse Issues

Fuse Blowing Troubleshooting

Identifies causes and solutions for blown fuses.

Relay and Motor;Lamp Checkout

Fan Motor and Oven Lamp Checkout

Troubleshooting for fan motor and oven lamp operation.

Circuit Board Failure Symptoms

Symptoms of Defective Circuit Board

Lists operational issues indicating a faulty PCB.

Display and Input Troubleshooting

Display and Input Troubleshooting

Diagnosing problems with the display and user input.

Heating Performance Troubleshooting

No Heat or Heating Issues

Diagnosing why the unit isn't heating.

Buzzing and Audio Feedback Troubleshooting

Buzzing and Audio Feedback Problems

Troubleshooting lack of buzzing or incorrect audio signals.

Ventilation Fan Operation Troubleshooting

Ventilation Fan Not Operating

Diagnosing why the ventilation fan fails to operate.

Exploded Views Overview

Component Part Categories

Labels for different sections of the exploded view.

Door Assembly Exploded View

Door Assembly Exploded View

Detailed illustration of door components.

Controller Assembly Exploded View

Controller Assembly Exploded View

Detailed illustration of controller components.

Oven Cavity Exploded View

Oven Cavity Components Exploded View

Detailed illustration of oven cavity components.

Latch Board Exploded View

Latch Board Components Exploded View

Detailed illustration of latch board components.

Interior Parts (I) Exploded View

Interior Components Exploded View (I)

Detailed illustration of interior components.

Interior Parts (II) Exploded View

Interior Components Exploded View (II)

Detailed illustration of interior components.

Installation Parts Exploded View

Installation Components Exploded View

Detailed illustration of installation components.

Replacement Parts List Overview

Replacement Parts for LMV1630 WW (White)

List of replaceable parts for the white model.

Replacement Parts List Details

Replacement Parts List Details

Continuation of the parts list with more components.

Replacement Parts for LMV1630 BB (Black)

Replacement Parts for LMV1630 BB (Black)

List of replaceable parts for the black model.

Replacement Parts for LMV1630 BB (Black) - Continued

Replacement Parts for LMV1630 BB (Black) - Continued

Continuation of the parts list for the black model.

Replacement Parts for LMV1630 ST (Stainless)

Replacement Parts for LMV1630 ST (Stainless)

List of replaceable parts for the stainless steel model.

Replacement Parts for LMV1630 ST (Stainless) - Continued

Replacement Parts for LMV1630 ST (Stainless) - Continued

Continuation of the parts list for the stainless steel model.

Summary

LG Microwave Oven Service Manual

Model Information

Details the specific LG microwave models covered by this manual.

Service Technician Safety Precautions

Microwave Energy Exposure Prevention

Guidelines for avoiding microwave energy exposure during servicing.

Foreword and Manual Usage

Manual Usage Warning

Emphasizes careful reading to avoid microwave energy exposure.

Microwave Oven Specifications

Technical Specifications

Details power, output, frequency, dimensions, and components.

Switch Chart

Describes the states of the interlock switches under different conditions.

General Cautions and Microwave Safety

High-Voltage and High-Current Precautions

Warns about dangers during repair and specific handling instructions.

Microwave Radiation Safety

Guidelines for preventing microwave energy exposure.

Appliance Installation and Grounding

Installation Precautions

Advice on placement and power connection for the microwave.

Grounding Instructions

Importance and procedure for grounding the appliance for safety.

Operating the Microwave Oven

Control Panel Layout

Identifies and illustrates the control panel buttons.

Control Panel Button Guide

Button Descriptions

Detailed explanation of each button's function and operation.

Electrical Circuit Schematics

Overall Schematic Diagram

Provides the main circuit diagram for the appliance.

Touch Key Board Matrix Circuit

Key Matrix Diagram

Illustrates the internal matrix connection of the touch keys.

Service Information and Precautions

General Precautions for Use

Advises on safe operation and usage of the microwave.

Trial Operation Checks

Steps to verify proper installation and initial operation.

Key Features and Safety Systems

Highlights important operational features and safety mechanisms.

Service Safety and Repair Tips

High Voltage Circuit Care

Emphasizes caution when working with high voltage circuits.

Microwave Leakage Prevention

Steps to avoid microwave energy leakage during servicing.

Microwave Leakage Measurement

Leakage Test Cautions

Advisories before and during microwave leakage testing.

Required Equipment

Lists the necessary tools for leakage testing.

Measuring Procedure

Details the method for measuring microwave energy leakage.

Leakage and Power Measurement Procedures

Measurement Without Outer Case

Leakage testing steps with the outer case removed.

Measurement With Assembled Oven

Leakage testing steps with the oven fully assembled.

Power Output Measurement

Procedure for measuring the oven's power output.

Component Disassembly Guide

Removing Power and Control Circuit Board

Steps to remove the main circuit board assembly.

FPC Connector Removal and Insertion

Removing FPC Connector

Step-by-step guide to disconnect the FPC connector.

Inserting FPC Connector

Step-by-step guide to connect the FPC connector.

Outer Case Removal Procedure

Removing the Outer Case

Instructions for disassembling the main outer casing.

Door Interlock Switch Servicing

Removing Door Interlock Switches

Steps to remove the door interlock switch assembly.

Magnetron and Stirrer Fan Removal

Removing the Magnetron

Detailed instructions for magnetron removal.

Removing the Stirrer Fan

Instructions for removing the stirrer fan assembly.

Door and Ventilation System Service

Removing and Assembling the Door

Procedures for door disassembly and reassembly.

Removing Ventilation Fan Assembly

Steps to remove the ventilation fan unit.

Turntable Motor Removal

Removing the Turntable Motor

Instructions for removing the turntable motor.

Door Latch and Interlock Adjustment

Interlock Mechanism Overview

Description of the door lock mechanism.

Adjustment Procedures

Steps for adjusting door latches and interlock switches.

Latch and Switch Closing Check

Procedure to check door latch and switch alignment.

Interlock Sequence and Leakage Testing

Latch and Switch Sequence Test

Verifying the correct sequence of interlock switches.

Microwave Energy Leakage Test

Final leakage test after adjustments.

Interlock Switch Continuity Checks

Primary Interlock Switch Test

Continuity test for the primary interlock switch.

Secondary Interlock Switch Test

Continuity test for the secondary interlock switch.

Monitor Switch Test

Continuity test for the monitor interlock switch.

Transformer and Magnetron Testing

Transformer Testing

Resistance tests for transformer windings.

Magnetron Testing

Resistance tests for magnetron terminals and chassis.

Capacitor, Diode, Relay, Fan Motor Testing

Capacitor and Diode Testing

Resistance and continuity tests for capacitor and diode.

Relay 2 and Fan Motor Testing

Continuity and resistance tests for relay and fan motor.

Ventilation, Turntable, Stirrer Motor Tests

Ventilation Motor Testing

Resistance tests for ventilation motor speeds.

Turntable and Stirrer Motor Testing

Resistance tests for turntable and stirrer motors.

Touch Key Board Resistance Testing

Touch Key Board Resistance Test

Measuring resistance of the touch key board connector pins.

Checkout Procedures for Fuse Issues

Fuse Blowing Troubleshooting

Identifies causes and solutions for blown fuses.

Relay and Motor;Lamp Checkout

Fan Motor and Oven Lamp Checkout

Troubleshooting for fan motor and oven lamp operation.

Circuit Board Failure Symptoms

Symptoms of Defective Circuit Board

Lists operational issues indicating a faulty PCB.

Display and Input Troubleshooting

Display and Input Troubleshooting

Diagnosing problems with the display and user input.

Heating Performance Troubleshooting

No Heat or Heating Issues

Diagnosing why the unit isn't heating.

Buzzing and Audio Feedback Troubleshooting

Buzzing and Audio Feedback Problems

Troubleshooting lack of buzzing or incorrect audio signals.

Ventilation Fan Operation Troubleshooting

Ventilation Fan Not Operating

Diagnosing why the ventilation fan fails to operate.

Exploded Views Overview

Component Part Categories

Labels for different sections of the exploded view.

Door Assembly Exploded View

Door Assembly Exploded View

Detailed illustration of door components.

Controller Assembly Exploded View

Controller Assembly Exploded View

Detailed illustration of controller components.

Oven Cavity Exploded View

Oven Cavity Components Exploded View

Detailed illustration of oven cavity components.

Latch Board Exploded View

Latch Board Components Exploded View

Detailed illustration of latch board components.

Interior Parts (I) Exploded View

Interior Components Exploded View (I)

Detailed illustration of interior components.

Interior Parts (II) Exploded View

Interior Components Exploded View (II)

Detailed illustration of interior components.

Installation Parts Exploded View

Installation Components Exploded View

Detailed illustration of installation components.

Replacement Parts List Overview

Replacement Parts for LMV1630 WW (White)

List of replaceable parts for the white model.

Replacement Parts List Details

Replacement Parts List Details

Continuation of the parts list with more components.

Replacement Parts for LMV1630 BB (Black)

Replacement Parts for LMV1630 BB (Black)

List of replaceable parts for the black model.

Replacement Parts for LMV1630 BB (Black) - Continued

Replacement Parts for LMV1630 BB (Black) - Continued

Continuation of the parts list for the black model.

Replacement Parts for LMV1630 ST (Stainless)

Replacement Parts for LMV1630 ST (Stainless)

List of replaceable parts for the stainless steel model.

Replacement Parts for LMV1630 ST (Stainless) - Continued

Replacement Parts for LMV1630 ST (Stainless) - Continued

Continuation of the parts list for the stainless steel model.

LG LMV1630BB Specifications

General IconGeneral
TypeOver-the-Range
Capacity1.6 cu. ft.
Power1000 Watts
ColorBlack
Cooking Levels10
Turntable Diameter12.6"
Preset ProgramsYes
Child LockYes
Defrost FunctionYes
Sensor CookingYes
Control TypeElectronic Touch
Dimensions (WxHxD)29.88" x 16.31" x 15.38"
Exterior Dimensions29.88" x 16.31" x 15.38"

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