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LG LSC26905TT User Manual

LG LSC26905TT
145 pages
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CAUTION
PLEASE READ THE SAFETY PRECAUTIONS OF THIS MANUAL CAREFULLY
BEFORE REPAIRING OR OPERATING THE REFRIGERATOR
REFRIGERATOR
SERVICE MANUAL
MODEL: LSC26905TT
COLOR: STAINLESS
WESTERN BLACK
STAINLESS
TITANIUM
NEO TITANIUM
http://biz.lgservice.com

Table of Contents

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LG LSC26905TT Specifications

General IconGeneral
BrandLG
ModelLSC26905TT
CategoryRefrigerator
LanguageEnglish

Summary

WARNINGS AND PRECAUTIONS FOR SAFETY

SPECIFICATIONS

PARTS IDENTIFICATION

HOW TO INSTALL THE REFRIGERATOR

How to adjust the Refrigerator Door Height

Steps to level the refrigerator doors for proper alignment.

Filter

Instructions for replacing and flushing the water filter cartridge.

Install Water Filter (Applicable to some models only)

Detailed steps for installing and replacing the water filter.

How to Control the Amount of Water Supplied to Icemaker.

Procedure to confirm and adjust water supply to the icemaker.

Control the amount of water supplied to the icemaker.

Using DIP switches to control water supply time for the icemaker.

MICOM FUNCTION

Monitor Panel Overview

Explains the different buttons and displays on the refrigerator's control panel.

GR-L267BV(T)RA, GR-L267BV(T, S)PA Monitor Panel

Details the monitor panel for GR-L267BV(T)RA and GR-L267BV(T,S)PA models.

GR-L267BV(T)R Monitor Panel

Details the monitor panel for the GR-L267BV(T)R model.

GR-L267BNRY Monitor Panel

Details the monitor panel for the GR-L267BNRY model.

Display Second Function

Explains buzzer mute, power saving, Celsius conversion, and demo modes.

Description of Function

Details various functional aspects of the refrigerator's operation.

Function of Temperature Selection

How to select and adjust temperature settings for different compartments.

Outside temperature display function

Describes how the ambient temperature is displayed on the unit.

Lock Function (dispenser and display button lock)

How to lock/unlock the dispenser and control panel.

Dispenser use selection

Selecting between water, crushed ice, and cubed ice.

Express freezing

How Express Freezing increases cooling speed.

OptiChill Function (GR-L267BV(T,S)PA Model)

Controls temperature for different food types in a specific compartment.

Control of variable type of freezing fan

How MICOM controls the freezing fan speed.

Ringing of compulsory operation, compulsory frost removal buzzer

Explains buzzer sounds for compulsory operations.

Sequential operation of built-in product

Describes the sequence of operations for built-in components.

Failure Diagnosis Function

Explains how the failure diagnosis function works and indicates error codes.

Test Function

Explains the purpose and operation of various test modes.

Function of dispenser and water dispenser built-in

Describes how the ice and water dispenser operates.

EXPLANATION FOR MICOM CIRCUIT

Power circuit

Details the power supply components and operation.

Oscillation circuit

Explains the function of the oscillation circuit for clock signals.

Reset circuit

Describes the circuit that restarts the MICOM from an initial state.

Load/dispenser operation, door opening circuit

Details the load driving circuit and door opening detection.

Dispenser operation circuit

Explains the dispenser operation circuit, load driving, and lever switch sensing.

Door opening sensing circuit

Explains the circuit for detecting door opening and closing.

Temperature sensing circuit

Describes the temperature sensing circuits for freezer and refrigerator.

Switch entry circuit

Explains circuits for test switch and damper motor reed switch.

Option designation circuit (model separation function)

Explains circuits for model separation.

Stepping motor operation circuit

Details the stepping motor operation circuits for various models.

Fan motor driving circuit (freezer, mechanical area)

Explains fan motor driving circuits and voltage control.

Temperature compensation and temperature compensation circuit

Explains temperature compensation circuits and tables.

Compensation circuit for temperature at freezer

Describes compensation circuits for freezer temperature adjustment.

Communication circuit and connection Lead Wire between main PCB and display PCB

Explains communication between main and display PCBs via lead wires.

Sensor resistance characteristics table

Table showing sensor resistance values at different temperatures.

OptiChill stepping MOTOR/Display

Explains OptiChill stepping motor and display circuits.

PWB parts diagram and list

Shows the diagram and lists parts for the main PWB assembly.

Parts list

Lists components for the GR-L267BV(T)R model.

DISPLAY ASSEMBLY part diagram

Shows the diagram and lists parts for the display assembly.

DISPLAY circuit diagram

Shows the circuit diagram for the display.

PWB Circuit Diagram may vary by to model.

Explains that PWB circuit diagrams can vary by model.

ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR

Working Principles

General principles of how the icemaker and dispenser operate.

ICEMaker Working Principles

Detailed working principles of the icemaker mechanism.

Dispenser Working Principles

Detailed working principles of the ice and water dispenser.

Function of Icemaker

Explains the specific functions of the icemaker.

Initial Control Function

Describes the initial setup and control of the icemaker.

Water Supply Control Function

Details how water is supplied to the icemaker.

Icemaking Control Function

Explains the process of ice formation within the icemaker.

Ice Ejection Control Function

Details the control function for ice ejection.

Test Function

Explains the test function for icemaker operations.

Icemaker Troubleshooting

Provides a troubleshooting flow chart for icemaker issues.

Icemaker Circuits

Shows circuit diagrams for the icemaker.

CIRCUIT

GR-L267BV(T)R Circuit Diagrams

Circuit diagrams specific to the GR-L267BV(T)R model.

GR-L267BNRY Circuit Diagrams

Circuit diagrams specific to the GR-L267BNRY model.

GR-L267BV(T)RA Circuit Diagrams

Circuit diagrams specific to the GR-L267BV(T)RA model.

GR-L267BV(T,S)PA Circuit Diagrams

Circuit diagrams specific to the GR-L267BV(T,S)PA model.

TROUBLE DIAGNOSIS

Faults

Identifies and resolves common electrical and component faults.

Poor Cooling

Addresses issues related to inadequate cooling performance.

Condensation and Ice Formation

Addresses issues with condensation and ice buildup inside the unit.

Sounds

Diagnoses and resolves various operational sounds and vibrations.

Faulty Internal Voltage (Short)

Resolves electrical issues caused by internal voltage shorts or wiring.

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