LG LBC22520SW Service Manual
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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODELS:
LBC22520SB
LBC22520ST
LBC22520SW
LBC22520TT

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Summarization of Contents

Disassembly
Refrigerator Door Disassembly
Procedures for removing and reversing the refrigerator door.
Freezer Door Disassembly
Instructions for removing and reversing the freezer door.
Fan and Fan Motor Removal
Steps to remove the fan and fan motor assembly.
Defrost Control Assembly Removal
How to remove the defrost control assembly.
Lamp Replacement
Procedures for replacing refrigerator and freezer compartment lamps.
Control Box-Refrigerator Removal
Steps to remove the refrigerator control box.
Multi Duct Removal
Instructions for removing the multi duct.
Cover Valve Disassembly and Assembly
Disassembly and assembly of the cover valve.
Adjustment
Compressor Role and Precautions
Explanation of the compressor's role and handling precautions.
PTC-Starter Composition and Function
Details on the PTC starter composition and function.
OLP (Overload Protector) Definition and Role
Definition and role of the overload protector (OLP).
Removing the Cover PTC
Step-by-step guide to removing the PTC cover.
Troubleshooting
Compressor and Electric Components Troubleshooting
Troubleshooting for compressor and electric components.
PTC and OLP Troubleshooting
Diagnosing issues related to the PTC starter and OLP.
Other Electrical Components Troubleshooting
Troubleshooting for other electrical parts like fans and heaters.
Service Diagnosis Chart
A chart for diagnosing common refrigerator complaints.
Refrigeration Cycle Troubleshooting
Troubleshooting chart for the refrigeration cycle.
Operation Principle and Repair Method of Icemaker
Icemaker Operation Principle
Describes the operational flow of the icemaker.
Ice Maker Functions
Details on icemaking modes and water supply.
Icemaker Defect Diagnosis Function
Error codes and diagnosis for the ice maker control panel.
Description of Function & Circuit of MICOM
MICOM Function Overview
Explains the basic functions and settings of the refrigerator.
PCB Function Details
Details on the function of the Printed Circuit Board (PCB).
Sensor Resistance Specification
Resistance values for various temperature sensors.
MICOM Troubleshooting
Troubleshooting guide based on symptoms and causes.
Main PWB Assembly and Parts List
Assembly diagram and parts list for the main PWB.
PWB Diagram
Schematic diagrams of the PWB assembly.
Exploded View and Replacement Part List
Case Parts Exploded View
Exploded view of the refrigerator's external case parts.
Freezer Parts Exploded View
Exploded view of freezer compartment parts.
Refrigerator Parts Exploded View
Exploded view of refrigerator compartment parts.
Door Parts Exploded View
Exploded view of refrigerator door components.
Water & Ice Maker Parts Exploded View
Exploded view of water and ice maker parts.

Table of Contents