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OWNER'S MANUAL
(LED Monitor*)
* LG LED Monitor applies LCD screen with LED
backlights.
Please read this manual carefully before operating
your set and retain it for future reference.
34GL750
34GN73A
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.

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Table of Contents
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Summarization of Contents

USING THE MONITOR
Connecting to a PC
Guide for connecting the monitor to a computer via various ports like HDMI and DisplayPort.
Connecting AV Devices
Instructions for connecting external audio-visual equipment to the monitor.
Connecting Peripherals
Information on connecting USB devices and accessories to the monitor.
Connecting Headphones
Details on connecting audio output devices to the monitor's headphone port.
USER SETTINGS
Activating the Main Menu
How to access and navigate the monitor's on-screen display (OSD) menu using the joystick.
Main Menu Features
Overview of the different options and functions available in the main menu.
Menu Settings
Detailed guide to configuring various display and system settings via the OSD menu.
TROUBLESHOOTING
Nothing is displayed on the screen.
Troubleshooting steps for when the monitor displays no image or is blank.
Some features are disabled.
Solution for when monitor features are unavailable, such as when OSD is locked.
The screen retains an image.
Advice on image sticking and using screensavers to prevent screen retention.
Screen display is unstable and shaky. / Images displayed on the monitor leave shadow trails.
Troubleshooting unstable or shaky screen display and issues with ghosting or shadow trails.
The display color is abnormal.
Solutions for abnormal display colors, pixel issues, or discolored screens.
No sound from the headphone port.
Troubleshooting no sound issues when using DP or HDMI input with headphones.
PRODUCT SPECIFICATION
Factory Support Mode
Lists horizontal, vertical frequencies, and polarity for various PC resolutions and connection types.
HDMI Timing (Video)
Details HDMI video timings including horizontal and vertical frequencies for different resolutions.
Power LED
Explains the LED color indications for different monitor operating modes (On, Sleep, Off).

Table of Contents