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LG 34UC88-B - User Manual

LG 34UC88-B
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www.lg.com
* LG LED Monitor applies LCD screen with LED backlights.
Please read this manual carefully before operating your set and retain it for future
reference.
OWNER’S MANUAL
34UC98
34UC88
IPS LED
MONITOR
(LED Monitor*)

Table of Contents

Questions and Answers

  • P
    Patricia VasquezJul 28, 2025
    How to fix an LG 34UC88-B when nothing is displayed on the screen?
    • T
      toddtaylorJul 28, 2025
      If nothing is displayed on your LG Monitor's screen, first ensure the power cord is correctly plugged into the outlet and that the power cable is properly connected. Press the power button. Also, verify that the correct input is enabled by going to Menu > Quick Settings > 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 signals from the PC are out of the monitor's frequency range, refer to the Product Specification section of this manual to set the appropriate frequency. Finally, check the cable and try reconnecting it.
  • M
    Melissa KrauseJul 31, 2025
    What to do if there is no sound from the headphone port on my LG 34UC88-B?
    • J
      jordanjessicaJul 31, 2025
      If there's no sound from the headphone port on your LG Monitor, ensure the headphone port connections are properly made. Try increasing the volume using the joystick. Also, 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.
  • C
    coryrichmondAug 5, 2025
    Why is the display color abnormal on my LG Monitor?
    • M
      Mary JohnsonAug 5, 2025
      If the display color on your LG Monitor appears abnormal, first set the color to 24 bit (true color) or higher by navigating to Control Panel > Display > Settings > Color Quality in Windows. Then, check the signal cable connection, reconnect it, or reinsert the PC's graphic card. Please note that this might not be an error and may not be related to the monitor's performance.
  • M
    Morgan HerringAug 9, 2025
    Why is the screen display unstable and shaky on my LG 34UC88-B?
    • M
      mary50Aug 9, 2025
      If your LG Monitor's screen display is unstable, shaky, or images leave shadow trails, 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.
  • E
    emoraAug 13, 2025
    What to do if I see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on my LG Monitor?
    • H
      hbrooksAug 14, 2025
      If you see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on your LG Monitor, install the display driver from the display driver CD (or diskette) that came with your display. Alternatively, you can download the driver from http://www.lg.com. Also, make sure to check if the graphic card supports Plug and Play function.
  • G
    graycatherineAug 18, 2025
    Why does my LG Monitor screen retain an image?
    • A
      Aaron LongAug 18, 2025
      If your LG Monitor screen retains an image, it may be due to displaying a still image for a prolonged time, which can damage the screen. To extend the monitor's lifespan, use a screensaver.
  • K
    Kevin RileyAug 23, 2025
    How to turn off the OSD Lock on my LG 34UC88-B?
    • W
      warrenwellsAug 23, 2025
      If the OSD Lock message is displayed on your LG Monitor, go to Menu > General and set OSD Lock to Off.

Summary

Assembling and Preparing Monitor

Moving and Lifting the Monitor

Provides instructions for safely moving and lifting the monitor to prevent damage.

Assembling the Stand (34 UC98)

Step-by-step guide to assemble the monitor stand for the 34UC98 model.

Assembling the Stand (34 UC88)

Step-by-step guide to assemble the monitor stand for the 34UC88 model.

Installing on a Table

Instructions for setting up the monitor on a table and connecting power.

Installing the Wall Mount Plate

Steps for installing a wall mount plate onto the monitor.

Installing on the Wall

Guidance on mounting the monitor on a wall using a compatible bracket.

Using the Monitor

Connecting to a PC

Instructions for connecting the monitor to a PC for display and audio output.

HDMI Connection for PC

How to connect the monitor to a PC using an HDMI cable for video and audio.

DisplayPort Connection

How to connect the monitor to a PC using a DisplayPort cable for video and audio.

Thunderbolt Connection

How to connect devices using the monitor's Thunderbolt ports.

Connecting AV Devices

How to connect audio-visual devices to the monitor using HDMI.

HDMI Connection for AV Devices

User Settings and Configuration

Activating the Main Menu

Menu Settings Configuration

Detailed explanation of various menu options and their functions.

Quick Settings

Picture Settings Adjustment

Color Adjustments

Troubleshooting Monitor Issues

No Display Issues

Solutions for problems like no power, no signal, or out of range messages.

Screen Instability and Trails

Display Color Issues

Product Specifications

34 UC98 Specifications

Detailed technical specifications for the LG 34UC98 monitor model.

34 UC88 Specifications

Detailed technical specifications for the LG 34UC88 monitor model.

LG 34UC88-B Specifications

General IconGeneral
Colorblack
Screen Typeled
Tiltableyes
Wall Mount100mm x 100mm
Webcamno
OS Compatibilitywindows
Screen Size34 inches
Panel Typeips
Aspect Ratio21:9
Resolution3440 x 1440
Native Resolution3440 x 1440
Refresh Rate60hz
Horizontal Viewing Angle178 degrees
Vertical Viewing Angle178 degrees
Response Time5 milliseconds
Brightness300 candela per square meter
Contrast Ratio5, 000, 000:1
Synchronizationfreesync (amd adaptive sync)
HDRno
Built-In Speakersyes
HDMI Ports2
Power Consumption56.7 watts
Depth with Stand9.4 inches
Width with Stand32.2 inches
Net Weight without Stand18.3 pounds

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