LG OLED48C2 Series

P/NO : MFL71892901 (2201-REV00)
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
OLED TV
SERVICE MANUAL
Copyright © 2022 LG Electronics Inc. All rights reserved. Only training and service purposes.
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
CHASSIS : E*21D
MODEL: OLED48C2***

LG OLED48C2 Series Specifications

General

Display Type	OLED
Screen Size	48 inches
Refresh Rate	120Hz
Processor	α9 Gen5 AI Processor 4K
Operating System	webOS
HDMI Ports	4
USB Ports	3
Bluetooth	Bluetooth 5.0
Ethernet	Yes
Audio Output	40W
Resolution	3840 x 2160
HDR	HDR10, Dolby Vision, HLG
Wi-Fi	Wi-Fi 6
VRR	Yes

Summary

Safety Precautions

General Guidance

Provides essential rules for safe equipment servicing and handling.

AC Leakage Current Checks

Details procedures for both cold and hot checks to ensure electrical safety.

Servicing Precautions

General Servicing Precautions

Outlines fundamental safety rules for servicing electronic equipment.

Electrostatically Sensitive (ES) Devices

Explains how to handle sensitive electronic components to prevent static damage.

General Soldering Guidelines

Provides best practices and techniques for soldering electronic components safely.

Specification

Application Range

Defines the scope and target chassis for this service manual.

Test Condition

Specifies the environmental and power conditions for testing.

Test Method

Outlines the procedures and standards for performance and safety testing.

Model General Specification

Lists general specifications for various regions and broadcasting systems.

Software Update

USB Download

Instructions for updating TV software via a USB drive.

NSU Download

Guide for updating software using the Network Service Update feature.

Block Diagram

Exploded View

Assembly Disassembly Guide

Disassembly

Step-by-step instructions for taking the TV apart.

Trouble Shooting Guide

A. Video Error

No VideoNormal Audio

Troubleshoots issues with no video but normal audio output.

No VideoNo Audio

Troubleshoots scenarios with no video and no audio.

Picture Broken Freezing

Diagnoses and resolves problems like screen freezing or picture artifacts.

Color Error

Addresses issues related to incorrect or absent color display.

VerticalHorizontal Bar, Residual Image, Light Spot, External Device Color Error

Guides on fixing screen distortions and external device color problems.

B. Power Error

No Power

Steps to diagnose and fix a TV that does not power on.

Off When On, Off While Viewing, Power Auto OnOff

Addresses intermittent power issues and auto power cycles.

C. Audio Error

No AudioNormal Video

Troubleshoots lack of audio while video is present.

Wrecked AudioDiscontinuationNoise

Diagnoses and resolves audio distortions, dropouts, or noise.

D. Function Error

Remote Control & Local Switch Checking

Guides on troubleshooting remote control and physical button functionality.

Magic Remote Operating Checking

Addresses issues with the magic remote's operation and pairing.

Wifi Operating Checking

Guides on troubleshooting Wi-Fi connectivity and performance.

External Device Recognition Error

Diagnoses problems with the TV recognizing connected external devices.

E. Noise

Circuit Noise, Mechanical Noise

Addresses and resolves issues causing circuit or mechanical noises.

F. Exterior Defect

Exterior Defect

Guides on identifying and rectifying physical damage to the TV.