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LG 31MU97C - User Manual

LG 31MU97C
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www.lg.com
Owner's Manual
IPS LED MONITOR
LED MONITOR*
31MU97
31MU97C
31MU97Z
Please read the safety information carefully
before using the product.
* LG LED Monitors are LCD Monitors with LED Backlighting.

Table of Contents

Questions and Answers

  • D
    Debra OconnorJul 28, 2025
    What to do if nothing is displayed on my LG Monitor screen?
    • C
      clarkmichaelJul 28, 2025
      If your LG Monitor screen is blank, ensure the power cord is securely plugged into the outlet. Also, verify the power cable connection and press the power button. Check that the correct input is enabled via Menu > Input. If the monitor is in sleep mode, try moving the mouse or pressing a key on the keyboard. Confirm that your computer is turned on. If the issue persists, check the cable and reconnect it. If signals from the PC are out of range, see the Product Specification section of this manual to set the appropriate frequency.
  • W
    Warren MorganAug 3, 2025
    What to do if there is no sound from the headphone port on my LG Monitor?
    • H
      hsuarezAug 3, 2025
      If you're not getting any sound from the headphone port on your LG Monitor, first, ensure the headphone connections are properly made. Then, try increasing the volume using the joystick. Finally, set the audio output of your PC to the monitor you are using by going to Control Panel > Hardware and Sound > Sound and setting the monitor as the default device on Microsoft Windows.
  • J
    John MaynardAug 8, 2025
    How to fix unstable and shaky screen display or shadow trails on LG 31MU97C?
    • E
      Erica SmithAug 8, 2025
      If your LG Monitor's screen display is unstable, shaky, or images leave shadow trails, and the resolution is set to HDMI 1080i 60/50 Hz (interlaced), try changing the resolution to 1080P or the recommended resolution.
  • M
    Misty HansenAug 12, 2025
    Why does my LG Monitor screen retain an image, and how to prevent it?
    • R
      reynoldskyleAug 12, 2025
      Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor, resulting in image retention. To extend the monitor's lifespan, use a screensaver.
  • M
    Mark HuntAug 17, 2025
    Why is the display color abnormal on my LG Monitor?
    • J
      Jordan LawsonAug 17, 2025
      If the display color on your LG Monitor seems off, first, set the color to 24 bit (true color) or higher via Control Panel > Display > Settings > Color Quality in Windows. Also, check the signal cable connection and reconnect it, or reinsert the PC's graphics card. Note that some color variations are normal for an LCD screen and not indicative of a defect or performance issue.
  • T
    Troy MillerAug 22, 2025
    How to turn off OSD Lock message on LG 31MU97C?
    • S
      shellyarnoldAug 22, 2025
      If the OSD Lock message is displayed on your LG Monitor, navigate to Menu > Settings and set OSD Lock to Off.

Summary

ASSEMBLING AND PREPARING

Product and Button Description

Explains the monitor's physical features and button functions.

How to Use the Joystick Button

Details how to operate the monitor using the joystick button.

Input Connector

Illustrates and lists the available input ports on the monitor.

Moving and Lifting the Monitor

Provides instructions for safely moving and lifting the monitor.

Monitor Installation Guide

Step-by-step instructions for installing the monitor and its stand.

Installing on a Table

Instructions for placing and connecting the monitor on a table.

Adjusting the Stand Height

Guide to adjust the monitor's height using the stand.

Adjusting the Monitor Angle

Instructions for tilting the monitor screen for optimal viewing.

Using the Pivot Feature

How to rotate the monitor screen 90 degrees clockwise.

Detaching the Monitor Stand

Steps to remove the monitor stand from the display.

Wall Mount Plate Installation

Guide to attach the wall mount plate to the monitor.

Wall Mounting Instructions

Instructions for mounting the monitor on a wall.

USING THE MONITOR

Connecting to a PC

How to connect your computer to the monitor for display output.

HDMI Connection Guide

Details on connecting the monitor to a PC via HDMI cable.

DisplayPort Connection

Guide to connect the monitor using Mini DisplayPort or DisplayPort.

Thunderbolt Connection

Instructions for connecting external devices via the Thunderbolt port.

Connecting AV Devices

How to connect audio-visual devices using HDMI.

Connecting Peripherals via USB

Connecting peripherals to the monitor via USB.

USB Connection for HDMI;DisplayPort

Thunderbolt USB Connectivity

USER SETTINGS

Activating the Main Menu

Main Menu Features Overview

Monitor Menu Settings

Aspect Ratio Settings

Function Settings

Picture Mode Selection

Picture-by-Picture (PBP) Mode

PBP Aspect Ratio Control

Picture Quality Adjustments

Response Time Optimization

Color Settings Configuration

System Settings Management

Resetting Monitor Settings

TROUBLESHOOTING

No Image Display

Display Instability and Ghosting

Abnormal Display Color

PRODUCT SPECIFICATION

Supported Resolutions

Input Connector Details

LG 31MU97C Specifications

General IconGeneral
3DNo
DDC/CIYes
Color gamut99.5 %
Pixel pitch0.0567 x 0.1701 mm
Aspect ratio17:9
Display diagonal31 \
Display resolution4096 x 2160 pixels
Display technologyLED
Contrast ratio (typical)1000:1
Display number of colors-
Display brightness (typical)320 cd/m²
Supported graphics resolutions4096 x 2160
Picture modeCustom/sRGB/AdobeRGB/DCM Sim/DCI-P3 Sim./Reader/Calibration1/Calibration2
RMS rated power10 W
Number of speakers2
USB hub version3.2 Gen 1 (3.1 Gen 1)
Number of upstream ports3
Mini DisplayPorts quantity1
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (max)85 W
Power consumption (off)0.5 W
Power consumption (standby)- W
Power consumption (typical)49 W
Power consumption (PowerSave)1.2 W
SafetyUL(cUL)/CB/TCO 6.0/TUV/KC
CertificationENERGY STAR 6.0, RoHS, Reach, Windows, FCC-B / CE
Product colorBlack
Package depth152.4 mm
Package width972.82 mm
Package height510.54 mm
Package weight12020.2 g
Tilt angle range-5 - 15 °
Panel mounting interface100 x 100 mm
Sustainability certificatesENERGY STAR
Cables includedAC, DisplayPort, HDMI, USB
Storage temperature (T-T)-20 - 60 °C
Operating temperature (T-T)10 - 35 °C
Storage relative humidity (H-H)5 - 90 %
Operating relative humidity (H-H)10 - 80 %
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)241.3 mm
Height (with stand)482.6 mm
Weight (with stand)9616.158 g
Depth (without stand)53.34 mm
Width (without stand)736.6 mm
Height (without stand)406.4 mm
Weight (without stand)78925.1 g

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