LG CM3430W Manual

The LG CM3430W is a 34-inch Curved UltraWide Monitor with WQHD resolution, 21:9 aspect ratio, AMD FreeSync technology, HDR10 support, sRGB 99% color gamut, USB-C connectivity, HDMI and DisplayPort inputs, built-in speakers, on-screen control, reader mode, black stabilizer, and crosshair display. Powered by 100-240V AC, 50/60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 34-inch Curved IPS Panel, On-Screen Control, AMD FreeSync, HDR10, USB-C with 90W Power Delivery, Built-in Speakers.

Feature	Description
Screen Size	34-inch Curved UltraWide (21:9)
Resolution	WQHD (3440 x 1440)
Panel Type	IPS
Refresh Rate	144Hz
Response Time	1ms (GTG)
Connectivity	USB-C, HDMI 2.0, DisplayPort 1.4
USB Hub	2 x USB 3.0 ports
Built-in Speakers	2 x 7W
Color Gamut	sRGB 99%
Curvature	1900R

Installation

Unpack and inspect contents. Assemble monitor stand and base.

1. Attach stand to monitor: Align stand with monitor base and secure with provided screw.
2. Connect power cable: Plug DC adapter to monitor and connect to AC power outlet.
3. Connect video sources: Use HDMI, DisplayPort, or USB-C cable for video input.
4. Connect peripherals: Use USB upstream cable for USB hub functionality.

WARNING! Monitor is fragile; handle with care to avoid damage. Ensure all connections are secure.

First-Time Setup

Power on monitor; follow on-screen prompts.

1. Select input source: Press INPUT button to choose between HDMI, DisplayPort, or USB-C.
2. Adjust display settings: Use OSD menu to set brightness, contrast, and color temperature.
3. Configure gaming features: Enable AMD FreeSync, set response time, and adjust crosshair settings.
4. Set up USB-C: Connect compatible devices for video, data, and charging (up to 90W).

CAUTION! Ensure stable surface; avoid direct sunlight on screen.

Specifications

• Screen Size: 34 inches Curved UltraWide.
• Resolution: 3440 x 1440 (WQHD).
• Aspect Ratio: 21:9.
• Panel Technology: IPS.
• Refresh Rate: 144Hz.
• Response Time: 1ms (GTG).
• Connectivity: USB-C, HDMI 2.0, DisplayPort 1.4, USB 3.0 Hub.
• Power Consumption: 45W typical, 0.3W standby.
• Power Source: 100-240V AC, 50/60Hz.
• Operating Temp: 10°C to 40°C.

Controls and Settings

Access OSD via joystick control at bottom of monitor. Power Button: Turns monitor on/off.

OSD Menu: Picture Mode, Game Adjust, Input, General Settings, Sound.

Picture: Brightness, Contrast, Sharpness, Color Temp, Gamma, Black Stabilizer. Game: Response Time, FreeSync, Crosshair, Black Stabilizer. Input: Source Selection, Auto Switch. General: Language, Reset, Power LED. Sound: Volume, Mute.

Connecting Devices

HDMI/DisplayPort: For computers and gaming consoles. USB-C: Single cable solution for video, data, and power.

1. Turn off monitor and devices before connecting.
2. Match cables to ports (HDMI to HDMI, etc.).
3. Select input via INPUT button or OSD menu.
4. For USB-C: Connect compatible laptop for video and charging.

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

Gaming Features

Supports AMD FreeSync, 144Hz refresh rate, 1ms response time.

1. AMD FreeSync: Enable in Game Adjust menu for smooth gameplay.
2. Black Stabilizer: Enhance visibility in dark scenes.
3. Crosshair Display: Overlay crosshair for FPS games.
4. Response Time: Set to Faster for reduced motion blur.
5. HDR Effect: Simulate HDR content on SDR games.

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

Productivity Features

On-Screen Control: Software for easy monitor settings adjustment. Screen Split: Multiple window layouts for multitasking.

1. On-Screen Control: Download software from LG website for PC/Mac control.
2. Screen Split: Choose from 14 different multi-tasking layouts.
3. Reader Mode: Reduce blue light for comfortable reading.
4. Flicker Safe: Minimize screen flickering for reduced eye strain.
5. Color Mode: sRGB, Custom, and Game presets available.

Care & Cleaning

Unplug before cleaning. Use microfiber cloth only; no liquids or abrasive materials.

CAUTION! Do not spray liquids directly on screen; avoid pressure on curved surface.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2023 LG Electronics; all rights reserved. Energy Star certified for energy efficiency. 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 connections; ensure outlet is working.
No signal	Input selection/cable	Select correct input source; check cable connections.
Flickering screen	Refresh rate/cable	Set refresh rate to 144Hz; use high-quality DisplayPort cable.
Color issues	Settings/cable	Reset color settings; check cable for damage.
USB-C not working	Cable/device compatibility	Use certified USB-C cable; check device compatibility.

Reset: OSD Menu > General > Reset All.

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