EasyManua.ls Logo

LG GR-642APA User Manual

LG GR-642APA
44 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.
MODEL: GR-642APA
REFRIGERATOR
SERVICE MANUAL
http://biz.lgservice.com
Ref.No.
GR-642AVPA
COLOR : SUPER WHITE
Question and Answer IconNeed help?

Do you have a question about the LG GR-642APA and is the answer not in the manual?

LG GR-642APA Specifications

General IconGeneral
Energy RatingA+
Dimensions (H x W x D)160.5 x 60.5 x 63.5 cm
Weight78 kg
ColorSilver
Defrosting TypeManual Defrost (Freezer), Automatic Defrost (Refrigerator)
Defrost SystemManual Defrost (Freezer), Automatic Defrost (Refrigerator)

Summary

SERVICING PRECAUTIONS

Air Recharging in Compressor

Procedure for recharging refrigerant in the compressor system.

REFRIGERATOR SPECIFICATIONS

GR-642* Model Specifications

Detailed specifications for the GR-642* refrigerator model.

GR-702* Model Specifications

Detailed specifications for the GR-702* refrigerator model.

PARTS IDENTIFICATION

Feature Chart - Refrigerator Components

Illustrates and labels various parts of the refrigerator.

Water Dispenser Operation and Maintenance

Details on filling, using, and cleaning the water dispenser.

Water Dispenser Cleaning Procedures

Instructions for cleaning the water dispenser grille, drip tray, and tank.

REFRIGERATOR DISASSEMBLY

Door Disassembly Steps

Steps for disassembling the freezer and refrigerator doors.

Door Switch Removal Procedure

Steps for removing and disconnecting the door switch.

Fan and Fan Motor Removal

Steps for removing the fan and fan motor assembly.

Defrost Control Assembly Removal

Steps for removing the defrost control assembly.

Lamp Replacement Guide

Steps for replacing the freezer and refrigerator lamps.

Control Box-R Removal Procedure

Steps for removing the control box.

REFRIGERATOR ADJUSTMENT

Compressor Function and Usage Notes

Details on the compressor's role, composition, and usage notes.

PTC Starter Component Explanation

Explanation of the PTC starter's composition, role, and usage.

PTC-Applied Circuit Diagram

Circuit diagram showing PTC starter application.

OLP (Over Load Protector) Definition and Role

Definition and role of the Over Load Protector (OLP).

REFRIGERATOR CIRCUIT DIAGRAM

REFRIGERATOR TROUBLESHOOTING

Compressor and Electric Components Troubleshooting

Troubleshooting steps for the compressor and electric components.

PTC and OLP Troubleshooting Guide

Troubleshooting steps for PTC and OLP components.

Other Electric Components Troubleshooting

Troubleshooting guide for other electric components.

Service Diagnosis Chart

A chart for diagnosing and remedying common complaints.

Refrigerating Cycle Troubleshooting Guide

Troubleshooting chart for refrigerating cycle issues.

General Refrigerating Cycle Control Details

Details on materials and procedures for the refrigerating cycle control.

MICOM FUNCTION AND CIRCUIT DESCRIPTION

Refrigerator Function Overview

Overview of the refrigerator's functional modes and controls.

Basic Operation Modes Explained

Explanation of basic operational modes and button functions.

Super Cool Feature Operation

Explanation of the Super Cool feature and its operation.

Front and Rear LED Indicator Functions

Describes the function of front and rear LEDs.

Variable Speed Fan Control in Freezer

Details on the variable speed fan control in the freezer.

Open Door Alarm and Buzzer Function

Explanation of the open door alarm and buzzer function.

Buzzer Sound Operation Details

Describes the buzzer sound function.

Double Cooling Fan Operation in Refrigerator

Details on the double cooling fan operation in the refrigerator.

Defrosting Process and Timing

Explanation of the defrosting process and timing.

Sequential Electric Component Operation Logic

Describes sequential operation of components during startup or test.

Error Diagnostic Mode and Codes

Explains the error diagnostic mode and error codes.

Test Mode Procedures and Operations

Details on entering and operating the product's test modes.

PCB FUNCTIONAL CIRCUITS

Power Circuit for PCB

Diagram and explanation of the power supply circuit for the PCB.

Oscillation Circuit for MICOM

Explains the oscillation circuit for the MICOM.

Reset Circuit for System Initialization

Describes the reset circuit for initializing functions.

Load/Buzzer Drive & Door Detection Circuit

Circuitry for driving loads, buzzer, and detecting door status.

Buzzer Drive Condition Check

Checks the conditions for buzzer operation.

Open Door Detection Circuit Check

Checks the circuit for detecting door status.

Temperature Sensor Circuit Details

Explains temperature sensor circuits and their states.

Switch Input Circuit Function

Circuit for detecting switch inputs, including test S/W.

Temperature Compensation Circuits Explained

Circuits for temperature compensation and over/under cooling.

Key Button Input & Display Light Circuit

Circuit for key input and display light activation.

Dispenser Pump Motor Operation Circuit

Explains the dispenser pump motor operation circuit.

SENSOR RESISTANCE SPECIFICATIONS

REFRIGERATOR TROUBLESHOOTING GUIDE

Power Source Troubleshooting

Steps to diagnose and fix power source problems.

Cooling Failure Troubleshooting Steps

Steps to diagnose and fix cooling failures.

Refrigerator Temperature Troubleshooting

Diagnosing and fixing poor refrigerator temperature.

Defrosting Failure Troubleshooting Guide

Diagnosing and fixing defrosting failures.

MAIN PWB ASSEMBLY AND PARTS LIST

Main PWB Assembly Diagram

Diagram showing the layout of the Main PCB and its components.

Replacement Parts List Overview

List of replaceable parts with their specifications and part numbers.

PWB Assy and Display Parts List

Parts list specifically for the PWB assembly and display components.

PWB SCHEMATIC DIAGRAM

EXPLODED VIEW AND PARTS LIST

General Refrigerator Exploded View

Exploded view of the refrigerator showing parts placement.

Dispenser Assembly Exploded View

Exploded view of the dispenser assembly and its parts.

Related product manuals