LG SH34SQ-W Manual

The LG SH34SQ-W is a 34-inch UltraWide QHD (3440x1440) curved monitor with a 21:9 aspect ratio, featuring IPS panel technology, HDR10 support, 144Hz refresh rate, 1ms response time, AMD FreeSync Premium, USB-C connectivity with 90W power delivery, built-in speakers, and height/tilt/swivel adjustment. 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. OnScreen Control Software 8. Gaming Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 34-inch UltraWide curved IPS display, stand with height/tilt adjustment, power adapter, USB-C cable, DisplayPort cable, quick start guide.

Feature	Description
Screen Size & Resolution	34-inch, 3440 x 1440 QHD UltraWide
Panel Technology	IPS with 178° viewing angles
Refresh Rate	144Hz with 1ms (MPRT) response time
Adaptive Sync	AMD FreeSync Premium
HDR Support	HDR10
Connectivity	USB-C (90W PD), 2x HDMI 2.0, DisplayPort 1.4, 2x USB 3.0
Audio	Dual 7W built-in speakers
Ergonomics	Height, tilt, swivel, and pivot adjustment
OnScreen Control	LG software for display settings management
Power	External power adapter (100-240V)

Installation

Unpack and inspect contents. Place on stable desk surface.

Attach stand: Align stand neck with monitor base, secure with provided screw.
Mount monitor: Attach monitor to stand neck until it clicks into place.
Connect power: Plug power adapter into monitor, then into wall outlet.
Connect video source: Use USB-C, HDMI, or DisplayPort cable to connect to PC or laptop.

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.

Adjust ergonomics: Set height, tilt, and swivel to comfortable viewing position.
Select input source: Press joystick button to open OSD, navigate to INPUT SELECT.
Configure display settings: Use OSD to adjust brightness, contrast, and color mode.
Install OnScreen Control: Download software from LG website for advanced settings.

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

Specifications

Screen Size: 34 inches (diagonal).
Aspect Ratio: 21:9 UltraWide.
Curvature: 1900R.
Brightness: 400 cd/m² (typical).
Color Gamut: sRGB 99%.
Ports: USB-C (90W PD), 2x HDMI 2.0, DisplayPort 1.4, 2x USB 3.0 downstream, headphone jack.
Power Consumption: 65W typical, 0.3W standby.
Dimensions (with stand): 32.1" x 20.9" x 11.2".
Weight: 17.6 lbs (with stand).

Controls and Settings

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

OSD Menu Structure: GAME SETTINGS (refresh rate, FreeSync, crosshair), PICTURE (brightness, contrast, HDR, color temp), INPUT SELECT, GENERAL (volume, language, reset).

Picture Modes: GAMER 1, GAMER 2, FPS, RTS, VIVID, READER, HDR EFFECT. Audio: Volume control, mute. Gaming: Black stabilizer, response time control, FreeSync on/off.

Connecting Devices

USB-C: Single-cable solution for video, audio, data, and 90W laptop charging. HDMI: For gaming consoles, media players. DisplayPort: For high-refresh-rate PC gaming.

Turn off monitor and source device before connecting.
Connect appropriate cable (USB-C recommended for laptops).
Select input source via OSD or joystick shortcut.
For USB peripherals: Connect devices to USB 3.0 downstream ports.

Tip: Use USB-C cable for MacBook Pro or Windows laptops with USB-C/Thunderbolt.

OnScreen Control Software

LG's OnScreen Control allows mouse control of monitor settings and screen split functions.

Download: Visit LG support site, search for SH34SQ-W, download OnScreen Control.
Install: Run installer, follow prompts.
Screen Split: Choose from 14 multi-window layouts (PIP, PBP, split screen).
Monitor Settings: Adjust brightness, contrast, input source via software interface.
Updates: Check for firmware updates through software.

Note: Requires Windows 10/11 or macOS 10.15 or later.

Gaming Features

Optimized for gaming with 144Hz refresh rate and AMD FreeSync Premium.

FreeSync Premium: Enable in OSD under GAME SETTINGS to reduce screen tearing.
Black Stabilizer: Brightens dark scenes without overexposing bright areas.
Crosshair: Overlay crosshair for FPS games (selectable styles).
Response Time: Set to FASTEST for minimal motion blur.
HDR: Enable HDR in Windows/Mac settings when playing HDR content.

Tip: Use DisplayPort for full 144Hz at 3440x1440 resolution.

Care & Cleaning

Unplug power before cleaning. Use microfiber cloth lightly dampened with water; do not use chemicals.

CAUTION! Never spray liquid directly onto screen. Avoid pressure on curved panel.

Regulatory Information

FCC Part 15 Class B compliant. Energy Star certified. RoHS compliant. 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 connection	Check power adapter connection; ensure outlet is working.
No signal	Input selection/cable	Select correct input source; check cable connection; try different cable.
Blurry text	Resolution settings	Set PC to 3440x1440 native resolution; run ClearType (Windows).
FreeSync not working	Settings/cable	Enable FreeSync in OSD and GPU software; use DisplayPort cable.
USB-C not charging	Power delivery	Ensure USB-C cable supports 90W PD; check laptop compatibility.
Dead pixels	Manufacturing	Contact LG support if within warranty period.

Reset: OSD > GENERAL > RESET ALL to restore factory settings.

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