LG 34UC87C-B Manual

The LG 34UC87C-B is a 34-inch UltraWide QHD curved monitor with 3440x1440 resolution, IPS display technology, 178°/178° viewing angles, 5ms response time, 60Hz refresh rate, AMD FreeSync technology, sRGB 99% color gamut, OnScreen Control software, Dual Controller, Reader Mode, Black Stabilizer, Game Mode, and multiple connectivity options including HDMI, DisplayPort, and USB hub. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 34-inch UltraWide curved IPS panel, Stand with height/tilt adjustment, Power button, Joystick control, Multiple input ports, USB hub.

Feature	Description
Screen Size	34-inch UltraWide curved display
Resolution	3440 x 1440 QHD
Panel Type	IPS with 178°/178° viewing angles
Refresh Rate	60Hz with AMD FreeSync
Response Time	5ms
Color Gamut	sRGB 99%
Connectivity	HDMI, DisplayPort, USB 3.0 hub
Adjustability	Height, tilt, and swivel adjustment
Special Features	OnScreen Control, Dual Controller, Reader Mode
Power Consumption	Energy efficient with power saving mode

Installation

Unpack and inspect contents. Assemble stand and monitor.

1. Attach stand: Align stand with monitor base and secure with provided screws.
2. Connect power: Plug power cord into monitor and wall outlet.
3. Connect video sources: Use HDMI or DisplayPort cables for computer connection.
4. Connect USB devices: Use USB upstream port for hub functionality.
5. Adjust position: Set desired height, tilt, and orientation.

WARNING! Monitor is heavy; lift with care to avoid injury. Ensure stand is securely attached.

First-Time Setup

Power on monitor; configure initial settings.

1. Input selection: Press INPUT button to select HDMI or DisplayPort.
2. Adjust display settings: Use OSD menu for brightness, contrast, and color.
3. Install OnScreen Control: Download software from LG website for enhanced control.
4. Configure gaming features: Enable AMD FreeSync and Game Mode if needed.
5. Set up split screen: Use Screen Split feature for multi-tasking.

CAUTION! Ensure stable surface; avoid placing near heat sources.

Specifications

• Screen Size: 34 inches UltraWide curved.
• Resolution: 3440 x 1440 QHD.
• Aspect Ratio: 21:9.
• Panel Technology: IPS.
• Refresh Rate: 60Hz.
• Response Time: 5ms.
• Color Gamut: sRGB 99%.
• Connectivity: HDMI, DisplayPort, USB 3.0 hub.
• Adjustability: Height, tilt, swivel.
• Power Consumption: Typical 45W, Max 70W.

Controls and Settings

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

OSD Menu: Brightness, Contrast, Sharpness, Color Temperature, Gamma, Response Time, FreeSync, Game Mode, Input Selection, Screen Split, Reader Mode, Black Stabilizer.

Picture: Brightness, Contrast, Sharpness, Color Temp (Cool, Medium, Warm), Gamma. Gaming: Response Time (Fast, Faster), Black Stabilizer, FreeSync, Game Mode. Display: Input List, Screen Split (14 modes), Auto Rotate. General: Language, Reset, Power LED.

Connecting Devices

HDMI: For computers, gaming consoles. DisplayPort: For high-resolution PC connection. USB: For peripheral devices.

1. Turn off monitor and devices before connecting.
2. Match cables to ports (HDMI to HDMI, DisplayPort to DisplayPort).
3. Select input via INPUT button or OSD menu.
4. For USB hub: Connect upstream cable to computer.

Tip: Use high-quality cables for best performance at 3440x1440 resolution.

Gaming Features

AMD FreeSync technology, Game Mode, Black Stabilizer, Response Time control.

1. Enable FreeSync: In OSD menu under Gaming settings.
2. Game Mode: Select FPS, RTS, or Custom profiles.
3. Black Stabilizer: Enhance visibility in dark scenes.
4. Response Time: Adjust for minimal motion blur.
5. Crosshair: Display aiming point for FPS games.

Note: FreeSync requires compatible AMD graphics card and DisplayPort connection.

Productivity Features

Screen Split, Dual Controller, Reader Mode, OnScreen Control software.

1. Screen Split: Choose from 14 multi-tasking layouts.
2. Dual Controller: Control two computers with one keyboard/mouse.
3. Reader Mode: Reduce blue light for comfortable reading.
4. OnScreen Control: Software for easy monitor settings management.
5. Color Mode: sRGB, Custom, and factory calibrated modes.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for screen; mild cleaner for exterior.

CAUTION! Do not spray liquids directly on screen; avoid abrasive materials.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Energy Star certified for energy efficiency. RoHS compliant. Copyright © 2025 LG Electronics; all rights reserved. For support, visit www.lg.com or contact 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cable connection	Check power cable; ensure outlet is working.
No signal	Input selection/cables	Select correct input; check cable connections.
Image blurry	Resolution settings	Set resolution to 3440x1440; adjust sharpness.
Color issues	Color settings	Reset color settings; check color mode.
USB devices not working	Upstream cable	Ensure USB upstream cable connected to computer.
FreeSync not working	Compatibility/connection	Use DisplayPort; ensure AMD graphics card and driver.

Reset: OSD Menu > General > Reset All.

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