LG H34SQ-W Manual

The LG H34SQ-W is a 34-inch UltraWide QHD (3440 x 1440) Curved Monitor with a 21:9 aspect ratio, featuring a 144Hz refresh rate, 1ms response time, AMD FreeSync Premium, HDR10 support, sRGB 99% color gamut, and USB-C connectivity with 90W power delivery. It includes a height-adjustable stand, tilt/swivel/pivot functionality, and on-screen control software. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. On-Screen Display (OSD) 8. Gaming Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 34-inch Curved IPS Panel, Stand Base, Stand Neck, Power Cable, HDMI Cable, USB-C Cable, Quick Start Guide.

Feature	Description
Screen Size & Resolution	34-inch, 3440 x 1440 (UltraWide QHD)
Aspect Ratio & Curvature	21:9, 1500R curvature
Refresh Rate & Response Time	144Hz, 1ms (GtG)
Adaptive Sync	AMD FreeSync Premium
HDR	HDR10 support
Color Gamut	sRGB 99%
Connectivity	USB-C (90W PD), HDMI 2.0, DisplayPort 1.4, USB Hub
Ergonomics	Height, Tilt, Swivel, Pivot adjustable
On-Screen Control	LG software for display settings
Power Input	100-240V AC, 50/60Hz

Installation

Unpack and inspect contents. Place on stable, level surface.

Attach Stand: Connect stand neck to monitor back, secure with screw. Attach base to neck.
Connect Power: Plug power cable into monitor and wall outlet.
Connect Video Source: Use included HDMI, DisplayPort, or USB-C cable to connect to PC/laptop.
Connect USB Devices: Use USB downstream ports for peripherals if needed.

WARNING! Monitor is heavy; lift with care using two people. Ensure stand is securely attached.

First-Time Setup

Power on monitor; follow on-screen prompts if any.

Adjust Position: Set desired height, tilt, swivel, or pivot.
Select Input: Press joystick button to open OSD, select INPUT to choose source (USB-C, HDMI, DP).
Install On-Screen Control: Download LG OnScreen Control from LG website for easy settings management.
Configure Display Settings: Use OSD to adjust brightness, contrast, color mode, etc.

CAUTION! Do not touch screen with sharp objects. Handle with clean, dry hands.

Specifications

Panel Type: IPS (In-Plane Switching).
Brightness: 400 cd/m² (typical).
Contrast Ratio: 1000:1.
Viewing Angles: 178°/178° (H/V).
Inputs: 1x USB-C (with 90W PD), 2x HDMI 2.0, 1x DisplayPort 1.4.
USB Hub: 2x USB 3.0 downstream ports.
Audio: None (no built-in speakers).
VESA Mount: 100 x 100 mm compatible.
Power Consumption: Typical 45W, Max 250W.
Dimensions (with stand): 32.1" x 21.5" x 9.8".

Controls and Settings

Access OSD via joystick control on back of monitor. Joystick Functions: Press to open OSD, move up/down/left/right to navigate, press to select.

OSD Main Menu: INPUT SELECT, PICTURE ADJUST, GAMING SETTINGS, GENERAL SETTINGS.

Picture Adjust: Brightness, Contrast, Sharpness, Color Temp (sRGB, Custom, etc.), Gamma, Black Stabilizer. Gaming: Refresh Rate (144Hz), Response Time (Fast, Faster), FreeSync (On/Off), Crosshair, FPS Counter. General: Language, Power LED, Auto Standby, Reset.

Connecting Devices

PC/Laptop: Use USB-C for single-cable connection (video, data, power). Gaming Consoles: Use HDMI for Xbox/PlayStation. Multiple Sources: Connect via HDMI and DP simultaneously.

Turn off monitor and source device before connecting.
Plug cable securely into correct port.
Power on source device, then monitor.
Select input via OSD or joystick.

Tip: Use USB-C for laptops to charge device and transmit video/data simultaneously.

On-Screen Display (OSD)

Use joystick to navigate OSD menus.

Open OSD: Press joystick.
Navigate: Move joystick up/down/left/right.
Select: Press joystick.
Exit: Move to EXIT or press and hold joystick.
Quick Settings: Assign frequently used settings to shortcuts via OnScreen Control software.
Split Screen: Use PBP (Picture-by-Picture) to display two inputs side by side.
Screen Adjust: Auto/Manual adjust for analog signals.

WARNING! Do not apply excessive force to joystick. Use gentle movements.

Gaming Features

AMD FreeSync Premium: Eliminates screen tearing and stuttering. Black Stabilizer: Enhances visibility in dark scenes. Crosshair: Overlay crosshair for FPS games. Dynamic Action Sync: Reduces input lag. FPS Counter: Displays refresh rate.

Care & Cleaning

Unplug before cleaning. Use soft, dry microfiber cloth. For stubborn stains, lightly dampen cloth with water; do not apply directly to screen.

CAUTION! Do not use alcohol, ammonia, or abrasive cleaners. Avoid pressure on screen.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2023 LG Electronics Inc. All rights reserved. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cable loose	Ensure power cable is securely connected to monitor and outlet.
No signal	Input selection/cable	Select correct input via OSD; check cable connections; try different cable.
Screen flickering	Refresh rate/FreeSync	Set refresh rate to 144Hz in OS; enable/disable FreeSync.
Dead pixels	Manufacturing defect	Contact LG support if within warranty period.
USB-C not charging	Power Delivery issue	Ensure USB-C cable supports 90W PD; check laptop compatibility.

Reset: OSD > General > Reset to restore factory settings.

Service: 1-800-243-0000; www.lg.com