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LG 34GN85B - User Manual

LG 34GN85B
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* Disclaimer : LG LED Monitor applies LCD screen with LED backlights.
This product is a computer monitor and not for television purpose.
Please read this manual carefully before operating your set and retain it
for future reference.
www.lg.com
34GN850
34GN85B
OWNER’S MANUAL
LG Gaming Computer Monitor
(LED COMPUTER MONITOR*)

Table of Contents

Questions and Answers

  • M
    Michelle IrwinJul 29, 2025
    What to do if nothing is displayed on my LG Monitor screen?
    • Y
      ysnyderJul 29, 2025
      If nothing is displayed on your LG Monitor screen, first ensure the power cord is correctly plugged into the power outlet. Then, check the power cable connection and press the power button. Also, verify that the connected input is enabled in the monitor's settings (Settings > Input). If the monitor is in sleep mode, move the mouse or press any key on the keyboard. Confirm that your computer is turned on. If the issue persists, check the signal cable between the PC and the monitor to ensure it is properly connected. Finally, install the display driver from the LG website and verify that your graphics card supports Plug and Play.
  • H
    Harold ClineAug 4, 2025
    Why is my LG 34GN85B Monitor screen display unstable and shaky?
    • L
      lauraalvarezAug 4, 2025
      If you are experiencing unstable and shaky screen display or shadow trails on your LG Monitor, and the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Try changing the resolution to 1080p or the recommended resolution.
  • K
    Kimberly JohnsonAug 10, 2025
    How to fix no sound from the headphone port on LG Monitor?
    • E
      erik27Aug 10, 2025
      If you're not getting any sound from the headphone port on your LG Monitor, ensure that the headphone port connections are properly made. Then, try increasing the volume using the joystick. Finally, set the audio output of your PC to the monitor by going to Control Panel > Hardware and Sound > Sound and setting the Monitor as the default device.
  • K
    Karen GarciaAug 16, 2025
    Why does my LG 34GN85B Monitor screen retain an image?
    • A
      Anthony JonesAug 16, 2025
      Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor, resulting in the retention of the image. To extend the lifetime of the monitor, use a screensaver.
  • A
    Amanda KrauseAug 22, 2025
    How to enable disabled features on LG 34GN85B Monitor?
    • C
      Carmen AlvarezAug 22, 2025
      If some features are disabled on your LG Monitor, the OSD might be locked. To unlock it, go to Settings > General and set OSD Lock to Off.

Summary

LICENSE

ASSEMBLING AND PREPARING

Supported Drivers and Software

Download and install the latest drivers and software from the LG website for optimal performance.

Product and Button Description

Understand the monitor's physical buttons, joystick, and LED indicators for basic operation.

Moving and Lifting the Monitor

Safe procedures to prevent damage when handling or transporting the monitor.

Installing on a Table

Instructions for safely placing the monitor on a flat surface with adequate ventilation.

Adjusting the Stand Height

How to modify the monitor's vertical position for ergonomic viewing.

Adjusting the Screen Angle

Instructions for tilting the monitor screen forward or backward for optimal viewing.

Cable Management and Security

Tips for organizing cables and using the Kensington security lock.

Wall Mounting Preparation

Steps for attaching a wall mount plate and installing the monitor on a wall.

USING THE MONITOR

Connecting to a PC

Guide to connecting your computer to the monitor via HDMI and DisplayPort.

Connecting Peripherals

How to connect USB devices and headphones to the monitor.

USER SETTINGS

Activating the Main Menu

Learn to navigate and control monitor settings using the joystick button.

Main Menu Features Overview

Explores the primary functions available in the monitor's main menu system.

Menu Settings Configuration

Detailed guide to configuring various display settings like Game Mode, Picture, Input, and General.

Game Mode Settings

Customize display for different gaming scenarios (SDR/HDR) and game types.

Game Adjust Options

Fine-tune gaming performance with features like Overclock, Adaptive-Sync, and Response Time.

Picture Adjust Options

Adjust brightness, contrast, color temperature, and other visual settings for optimal image quality.

Input and Ratio Settings

Manage display input sources and aspect ratio for different resolutions.

General Settings and Features

Configure language, power saving, OSD lock, and other general monitor features.

TROUBLESHOOTING

Screen Display Problems

Solutions for issues like no display, flickering, or incorrect resolution.

Image Quality Issues

Address problems such as image retention or shadow trails on the screen.

Color and Audio Problems

Resolve display color abnormalities and headphone audio output issues.

PRODUCT SPECIFICATION

Technical Specifications Summary

Details on LCD screen, resolution, power consumption, and environmental operating conditions.

Physical Dimensions and Weight

Information on the monitor's size, weight, and overall physical characteristics.

Factory Support Mode

HDMI Timing (Video) Details

Technical timing information for HDMI video signals and preset modes.

LG 34GN85B Specifications

General IconGeneral
Screen Size34 inches
Panel TypeNano IPS
Response Time1 ms (GtG)
Contrast Ratio1000:1
HDRHDR10
Color GamutDCI-P3 98%
VESA Mount CompatibleYes (100 x 100 mm)
Aspect Ratio21:9
CurvatureFlat
Resolution3440 x 1440
Refresh Rate160 Hz
Brightness400 cd/m²
Connectivity2 x HDMI, 1 x DisplayPort, 2 x USB 3.0, 1 x Headphone Out
Adaptive SyncNVIDIA G-SYNC Compatible

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