LG H34SQ-S Manual

The LG H34SQ-S is a 34-inch UltraWide QHD (3440 x 1440) curved gaming monitor with a 144Hz refresh rate, 1ms response time, AMD FreeSync Premium, HDR10 support, sRGB 99% color gamut, and customizable gaming features. It includes multiple connectivity options, ergonomic stand adjustments, and on-screen control software. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 34-inch UltraWide curved IPS panel, Ergonomic stand, Power adapter, DisplayPort cable, HDMI cable, Quick start guide.

Feature	Description
Screen Size & Resolution	34-inch, 3440 x 1440 (UltraWide QHD)
Refresh Rate	144Hz with 1ms (MPRT) response time
Adaptive Sync	AMD FreeSync Premium technology
HDR	HDR10 support for enhanced contrast
Color Gamut	sRGB 99% coverage
Connectivity	2x HDMI 2.0, 1x DisplayPort 1.4, 2x USB 3.0, Headphone jack
Ergonomic Stand	Height, tilt, swivel, and pivot adjustments
Gaming Features	Black Stabilizer, Crosshair, Dynamic Action Sync
On-Screen Control	Software for monitor settings management
Power Input	External power adapter (100-240V)

Installation

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

1. Attach stand: Align stand neck with monitor base, secure with provided screw.
2. Connect power: Plug power adapter into monitor, then into wall outlet.
3. Connect video source: Use HDMI or DisplayPort cable to connect PC or gaming console.
4. Connect USB devices: Use USB upstream cable (included) to connect to PC for USB hub functionality.

WARNING! Monitor is heavy; use two people for lifting and assembly to avoid injury.

First-Time Setup

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

1. Select input source: Press joystick button to open OSD, navigate to Input Selection.
2. Adjust display settings: Use OSD to set brightness, contrast, and color mode.
3. Enable gaming features: Access Game Adjust menu to activate AMD FreeSync, set refresh rate.
4. Install On-Screen Control: Download software from LG website for advanced settings management.

CAUTION! Ensure monitor is securely attached to stand before adjusting height or tilt.

Specifications

• Screen Size: 34 inches (diagonal).
• Aspect Ratio: 21:9 UltraWide.
• Panel Type: IPS.
• Resolution: 3440 x 1440 (QHD).
• Refresh Rate: 144Hz.
• Response Time: 1ms (MPRT).
• Brightness: 300 cd/m² (typical).
• Contrast Ratio: 1000:1.
• Connectivity: HDMI 2.0 x2, DisplayPort 1.4, USB 3.0 hub, Headphone out.
• Power Consumption: 45W typical, 0.3W standby.

Controls and Settings

Access OSD via joystick control on rear bottom edge. Power button located near joystick.

Joystick Navigation: Press to enter OSD; push up/down/left/right to navigate; press to select.

Picture: Brightness, Contrast, Sharpness, Color Temp (Warm, Medium, Cool), Gamma, Black Stabilizer. Game Adjust: Refresh Rate, AMD FreeSync, Response Time (Fast, Faster), Crosshair, Dynamic Action Sync. Input Selection: HDMI 1, HDMI 2, DisplayPort. General: Language (ENGLISH default), Reset, Power LED control.

Connecting Devices

PC/Console: HDMI or DisplayPort. USB Devices: Connect upstream cable to PC for USB hub.

1. Turn off monitor and source device before connecting.
2. Match cables to ports (HDMI to HDMI, DisplayPort to DisplayPort).
3. Select correct input via OSD Input Selection menu.
4. For USB hub: Connect upstream cable to PC USB port; peripheral devices to monitor USB ports.

Tip: Use DisplayPort for maximum refresh rate (144Hz) at native resolution.

Gaming Features

Optimized settings for enhanced gaming experience.

1. AMD FreeSync Premium: Enable in Game Adjust menu to reduce screen tearing.
2. Black Stabilizer: Adjusts dark areas for better visibility in shadows.
3. Crosshair: Overlays aiming reticle for FPS games (multiple styles available).
4. Dynamic Action Sync: Reduces input lag for faster response.
5. Refresh Rate: Ensure set to 144Hz in Windows display settings and monitor OSD.
6. Response Time: Set to "Faster" for minimal motion blur.
7. HDR: Enable in Windows settings when supported by game/content.

WARNING! Extended gaming sessions may cause eye strain; take regular breaks.

On-Screen Control

LG's software for easy monitor settings management on PC.

1. Download from LG website (support section).
2. Install and run application.
3. Use to adjust screen split (PBP/PIP), color settings, brightness, and input selection via mouse.
4. Create and save custom profiles for different use cases (gaming, photo editing, office).

Note: Requires connection via USB upstream cable for full functionality.

Care & Cleaning

Unplug power before cleaning. Use soft, dry microfiber cloth for screen; slightly damp cloth for stubborn marks (water only).

CAUTION! Do not use alcohol, ammonia, or abrasive cleaners. Avoid spraying liquids directly on screen.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Energy Star certified for efficiency. Copyright © LG Electronics Inc. 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 connection	Check power adapter connections; ensure outlet is working.
No signal	Input selection/cable	Select correct input in OSD; check cable connections; try different cable.
Screen flickering	Refresh rate/Adaptive Sync	Set refresh rate to 144Hz; disable/enable AMD FreeSync.
Dead pixels	Manufacturing defect	Contact LG support if within warranty period.
USB hub not working	Upstream cable	Ensure upstream cable connected to PC; reinstall USB drivers.
HDR not working	Windows settings/source	Enable HDR in Windows Display Settings; ensure content supports HDR10.

Reset: OSD > General > Reset All Settings.

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