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LG MC2841SPS - User Manual

LG MC2841SPS
39 pages
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MODEL: MC2841SPS
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LG MC2841SPS Specifications

General IconGeneral
Microwave Power900 W
DisplayLED
TurntableYes
Turntable Diameter315 mm
Dimensions (W x H x D)510 x 310 x 490 mm
Child LockYes
Capacity28 liters
Control TypeTouch

Summary

Safety Precautions

Service Safety Precautions

Safety measures for service personnel to prevent microwave exposure during repair.

Microwave Radiation Warning

Cautionary notice regarding potential radiation exposure from the microwave generator.

Specifications

Technical Specifications and Accessories

Details on model, power, dimensions, weight, and included accessories.

Repair Cautions

High Voltage and Current Hazards

Warnings regarding high voltage and current, requiring extreme care during repair.

Microwave Radiation Safety

Precautions against exposure to microwave energy during operation and service.

Specific Repair Safety Notes

Specific safety precautions like discharging capacitors and handling parts.

Installation Guidelines

Installation Procedures

Instructions for safely placing and positioning the microwave oven.

Electrical Earthing Requirements

Importance of proper earthing and wiring color codes for safe operation.

Operating Instructions

Oven Features Overview

Overview of the microwave oven's main features and components.

Control Panel Functions

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

Operating Sequences

Step-by-step guides for various cooking modes.

Schematic Diagram

Electrical Circuit Diagram

Visual representation of the oven's electrical circuitry and component connections.

Circuit Description

General Circuit Operation

Explanation of low voltage transformer and initial switch operations.

Cooking Mode Operations

Logic for power, time selection, start button, and combi cooking modes.

Safety Interlock Circuit

How safety interlocks and relays respond to door opening.

Service Information

Tools and Measuring Instruments

Lists necessary tools and measuring instruments for servicing.

Microwave Leakage Testing

Cautions and procedures for performing microwave leakage tests.

Measuring Microwave Leakage

Step-by-step guide for measuring microwave energy leakage.

Leakage Measurement Procedures

Leakage measurement procedures with outer case removed and assembled.

Leakage Measurement Notes

Important notes and tips for accurate leakage measurement.

Leakage Test Record Keeping

Guidelines for recording leakage test results and notifications.

Microwave Power Output Measurement

Power Output Test Procedure

Detailed method and formula to calculate microwave power output.

Disassembly and Adjustment

Component Removal Procedures

Steps for removing outer case, power cord, control panel, and PCB.

Magnetron Removal Procedure

Steps for safely removing the magnetron.

Door and Air Duct Removal

Steps to remove the door assembly and air duct.

High Voltage Component Removal

Steps to remove high voltage capacitor and diode.

Motor and Transformer Removal

Steps to remove fan motor, turntable motor, and high voltage transformer.

Motor and Heater Removal

Steps to remove circulation motor and sheath heater.

Interlock System Mechanism

Details on the door lock mechanism and interlock switches.

Interlock Continuity Testing

Primary Switch Continuity Test

Procedure to test the primary interlock switch continuity.

Secondary Switch Continuity Test

Procedure to test the secondary interlock switch continuity.

Monitor Switch Continuity Test

Procedure to test the monitor switch continuity.

Component Testing Procedures

High Voltage Transformer Tests

Test procedure for high voltage transformer resistance.

Magnetron Resistance Test

Test procedure for magnetron resistance.

High Voltage Capacitor Tests

Test procedure for high voltage capacitor resistance.

High Voltage Diode Tests

Test procedure for high voltage diode continuity.

Fuse and Heater Element Tests

Test procedure for fuse continuity and heater element resistance.

Thermostat Resistance Tests

Test procedure for magnetron and convection thermostat resistance.

PCB Relays and Motor Tests

Test procedure for PCB relays, fan motor, and turntable motor.

Circulation Motor Test

Test procedure for circulation motor resistance.

Troubleshooting Guide

Troubleshooting Safety Precautions

Safety precautions to follow before starting troubleshooting.

Common Operational Issues

Common problems, their causes, and remedies for oven operation.

Control Circuit Malfunctions

Troubleshooting visual conditions indicating a defective control circuit.

Oven Not Operating Troubleshooting

Troubleshooting steps for when the oven does not operate at all.

Oven Start and Heat Output Issues

Troubleshooting for oven not starting or low heat output.

No Microwave Oscillation Troubleshooting

Troubleshooting for no microwave oscillation despite proper operation.

Power Level and Grill Function Issues

Troubleshooting for improper cooking at lower power levels or grill function.

Error Mode and Micro Mode Heating Issues

Troubleshooting for error codes and lack of heating in microwave mode.

Exploded View Diagrams

Introduction to Exploded Views

General introduction to the exploded view diagrams.

Component Groupings Overview

Overview of exploded views for cavity, interior, base plate, latch, and control panel parts.

Door Parts Exploded View

Control Panel Parts Exploded View

Oven Cavity Parts Exploded View

Latch Board Parts Exploded View

Interior Parts Exploded View

Base Plate Parts Exploded View

Service Part List

Detailed Service Part Information

Comprehensive list of all service parts with their specifications.

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