LG 55XE3C User Manual

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Please read this manual carefully before operating your set and retain it

for future reference.

OWNER’S MANUAL

LG Digital

Signage

(MONITOR SIGNAGE)

www.lg.com

Copyright © 2018 LG Electronics Inc. All Rights Reserved.

55XE3C

75XE3C

Table of Contents

Other manuals for LG 55XE3C

Easy Setup Guide8 pages

Quick Start Guide8 pages

Questions and Answers:

C
Clifford PayneAug 18, 2025
What to do if no image is displayed on my LG Monitor?
- M
  Mary HoldenAug 18, 2025
  If your LG Monitor isn't displaying an image, here are a few things to check: * Ensure the power cord is correctly plugged into the power outlet. * Verify that the circuit breaker is properly connected and switched on (red). * Inspect the signal cable. * Press the INPUT menu on the remote control to confirm the input signal. Also, if operating in below-zero temperatures, the monitor may take up to one hour to raise its internal temperature.
D
Donald JonesAug 20, 2025
Why does the audio function not work on my LG Monitor?
- B
  Brenda WillisAug 20, 2025
  If the audio function isn't working on your LG Monitor, try the following: * Check if the audio cable is connected properly. * Adjust the volume settings. * Ensure the sound is set properly. * Select the appropriate equalizer sound. * Adjust the volume again to ensure it's not muted or too low.
P
Paul HoldenAug 23, 2025
Why is the screen color abnormal on my LG Monitor?
- P
  Pamela Cooper MDAug 23, 2025
  If the screen color on your LG Monitor appears abnormal, it could be due to several reasons: * The number of colors might be set to 16 colors. To fix this, set the number of colors to more than 24 bits (true color) via [Control Panel] ? [Display] ? [Settings] ? [Color Table] in Windows. * There might be a connection issue with the signal cable, so check its connection status. * Try re-inserting the PC graphics card. Also, note that the appearance of a few red, green, blue, white, or black pixels is not a malfunction of the LCD.
M
Matthew MurrayAug 26, 2025
How to fix abnormal screen image on LG Monitor?
- H
  hgonzalezAug 26, 2025
  If the screen image on your LG Monitor looks abnormal, it might be due to these reasons: * The graphics card resolution and frequency might not be supported. Check if they are supported and set to the recommended resolution in the [Control Panel] ? [Display] ? [Setting] menu if the frequency is out of range. * The input signal might not be correctly connected to the signal port. Ensure the signal cable matches the source input signal.
Y
Yesenia NolanAug 28, 2025
Why does after-image appear on my LG Monitor?
- T
  Taylor BrewerAug 28, 2025
  An after-image may appear on your LG Monitor for the following reasons: * If a fixed image is displayed for a long time, the pixels may be damaged. To prevent this, use the screen-saver function. * When a dark image is displayed after an image with high contrast (black and white or gray), it is normal for LCD screens.
M
Manuel WilsonAug 30, 2025
How to fix no image on LG 55XE3C?
- A
  Adam PorterAug 30, 2025
  If your LG Digital Signage displays no image, first ensure the power cord is securely plugged into the power outlet. Also, check that the circuit breaker is properly connected and switched on (red). If the issue persists, verify the signal cable connection between your PC and the signage. Access the input menu to confirm the correct input signal is selected. Finally, remember that in below-zero temperatures, the display may take up to an hour to warm up internally.
N
natalie84Sep 1, 2025
What to do if audio function does not work on LG Digital Signage?
- R
  Rachel McdonaldSep 1, 2025
  If the audio function isn't working on your LG Digital Signage, start by checking the audio cable connection. Then, ensure the volume is appropriately adjusted and the sound settings are correctly configured. Also, try selecting a different equalizer sound and adjusting the volume again.
K
Kristin ClarkSep 4, 2025
Why is the screen color abnormal on my LG Digital Signage?
- A
  Amber RichardsonSep 4, 2025
  If the screen color on your LG Digital Signage appears abnormal, first ensure the number of colors is set to more than 24 bits (true color) via [Control Panel] [Display] [Settings] [Color Table] in Windows. Next, check the connection status of the signal cable. Note that slight color variations can be a normal characteristic of LCD panels and not a malfunction.
R
Reginald GillSep 7, 2025
What to do if the screen image looks abnormal on LG Digital Signage?
- M
  Melinda EllisSep 7, 2025
  If the screen image on your LG Digital Signage looks abnormal, verify that your graphics card resolution and frequency are supported by the product. If the frequency is out of range, adjust it to the recommended resolution via the [Control Panel] [Display] [Setting] menu. Also, ensure the correct input signal is connected to the appropriate signal port. If condensation is present, allow some time after powering on for it to dissipate. Finally, regularly clean the heat exchanger to prevent internal temperature increases.
A
ashleyrodriguezSep 9, 2025
Why does after-image appear on LG 55XE3C?
- R
  reynoldsericSep 9, 2025
  If an after-image appears on your LG Digital Signage, it could be due to using a fixed image for an extended period, which can damage the pixels. Use the screen-saver function to prevent this. Also, displaying a dark image after a high-contrast image (black and white or gray) is normal for LCD screens.

LG 55XE3C Specifications

General

Brand	LG
Model	55XE3C
Category	Digital Signage
Language	English

Summary

IMPORTANT PRECAUTIONS

Precautions When Installing the Product

Details safety guidelines for product installation to prevent injury or death.

Precautions for the AC Adapter and Power

Outlines critical safety measures for using the AC adapter and power cord.

Precautions When Moving the Product

Provides safety instructions for safely moving the product to prevent damage or injury.

Precautions When Using the Product

Covers essential safety guidelines for safe operation and avoiding potential hazards.

Precautions When Cleaning the Product

Offers advice on safe cleaning methods to prevent damage or hazards.

ASSEMBLY AND PREPARATION

Installing on a Wall

Details the requirements for safe and proper wall mounting, including ventilation.

Enclosure Installation Guide

Provides technical guidance for fixing panel screw holes and mounting the enclosure.

Safety and Precaution Guide for Installation

Offers crucial safety advice for installation, particularly regarding direct sunlight.

REMOTE CONTROL

MAKING CONNECTIONS

Connecting to a PC

Explains how to connect the monitor to a PC and the supported features.

External Device Connection

Guides on connecting external devices like HD receivers or VCRs using various ports.

TROUBLESHOOTING

No image is displayed.

Addresses issues where the product does not display any image and provides troubleshooting steps.

The Unknown Product message appears when the product is connected.

The screen image looks abnormal.

Troubleshooting steps for incorrect screen positioning or display anomalies.

After-image appears on the product.

Explains how to prevent or mitigate after-images on the screen.

After-image appears when the product is turned off.

Explains how to prevent or mitigate after-images on the screen.

The audio function does not work.

Troubleshooting steps for when no audio is outputted from the monitor.

Screen color is abnormal.

Steps to improve color resolution and fix poor color display.

The operation does not work normally.

Troubleshooting steps for unexpected power-off issues.

The power suddenly turned off.

Troubleshooting steps for unexpected power-off issues.

PRODUCT SPECIFICATIONS

USER SETTINGS

Picture Settings

Adjusts visual parameters like brightness, contrast, and sharpness for optimal display.

Sound Settings

Network Settings

Manages wired and wireless network connections, including setup and advanced settings.

General Settings

Configures language, keyboard, time, date, and auto power settings for the monitor.

Configuring Set ID

Using Tile Mode

TO CONTROL MULTIPLE PRODUCTS

Connecting the Cable

Details how to connect multiple monitors to a single PC using RS-232C cables.

Communication Parameter

Command Reference List

INSTALLATION MENU

Signage Setup

Power Off Management

Rotation

Sync Mode

Application

Status Message

SIMPLINK Setup

Signage 365 Care

Factory Reset

Guide to Using Content Rotation

USB Cloning

Fail Over

ISM Method

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