LG 31MU97-B User Manual

The LG 31MU97-B is a professional 31-inch 4K Ultra HD monitor with 4096 x 2160 resolution, IPS display technology, 99.5% Adobe RGB color gamut, Thunderbolt 2 connectivity, DisplayPort, HDMI inputs, USB 3.0 hub, and professional calibration capabilities. Designed for graphic design, video editing, and professional content creation applications. 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. Color Calibration 8. Display Modes 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 31-inch 4K IPS panel, Thunderbolt 2 ports, DisplayPort, HDMI, USB 3.0 hub, On-Screen Control software, hardware calibration capability.

FeatureDescription
Screen Size31-inch 4K Ultra HD (4096 x 2160)
Panel TechnologyIPS (In-Plane Switching)
Color Gamut99.5% Adobe RGB, DCI-P3 compatible
Thunderbolt 2Daisy-chain capable, high-speed data transfer
DisplayPortDisplayPort 1.2 input
HDMIHDMI 2.0 input
USB 3.0 Hub4-port USB 3.0 hub with fast charging
Hardware CalibrationProfessional color calibration support
On-Screen ControlSoftware-based monitor control
POWERTurns monitor on/off

Installation

Unpack and inspect contents. Assemble stand and mount monitor.

  1. Attach stand: Align stand base with monitor, secure with provided screws.
  2. Connect video sources: Use Thunderbolt 2, DisplayPort, or HDMI cables.
  3. Connect USB devices: Use USB 3.0 ports for peripherals.
  4. Plug into AC power using included power adapter.

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 Thunderbolt, DisplayPort, or HDMI.
  2. Resolution setup: Ensure computer outputs 4096 x 2160 resolution.
  3. Color mode: Select preferred color space (Adobe RGB, sRGB, DCI-P3).
  4. Install On-Screen Control: Download and install software from LG website.

CAUTION! Ensure stable surface; monitor requires adequate ventilation.

Specifications

Controls and Settings

Access OSD via rear joystick control or On-Screen Control software.

Physical Controls: Power button, Joystick navigation, Input selection.

Picture: Brightness, Contrast, Sharpness, Color Temperature, Gamma. Color: Color Space (Adobe RGB, sRGB, DCI-P3), 6-Axis Color Control, Calibration settings. Input: Source selection, Auto detect. System: Language, OSD timeout, Power LED.

Connecting Devices

Thunderbolt 2: For Mac computers and daisy-chaining. DisplayPort: For PC computers. HDMI: For video sources and gaming consoles.

  1. Turn off monitor and computer before connecting.
  2. Use high-quality cables capable of 4K resolution.
  3. Select input via INPUT button or OSD menu.
  4. For daisy-chaining: Connect additional Thunderbolt devices to second port.

Tip: Use Thunderbolt 2 for best performance with compatible devices.

Color Calibration

Professional hardware calibration supported.

  1. Connect calibration device: Use compatible colorimeter (X-Rite, Datacolor).
  2. Launch calibration software: Use manufacturer's software or LG Calibration Studio.
  3. Follow on-screen instructions: Complete calibration process.
  4. Save profile: Store calibration to monitor hardware.
  5. Verify accuracy: Check calibration with test images.

WARNING! Allow monitor 30 minutes warm-up before calibration for accurate results.

Display Modes

Multiple preset modes for different applications.

Care & Cleaning

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

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. RoHS compliant. Copyright © LG Electronics. For support, visit www.lg.com or contact 1-800-243-0000.

Troubleshooting

SymptomPossible CauseCorrective Action
No displayPower/input selectionCheck power connection; verify correct input selected; ensure computer output.
Poor image qualityResolution/cableSet to native 4096x2160 resolution; use high-quality cables; check source quality.
Color inaccuracyCalibration/color spaceRecalibrate monitor; verify color space setting matches application.
USB devices not workingConnection/powerEnsure USB upstream cable connected; try different USB port; check device power.
Thunderbolt not detectedDriver/cableInstall Thunderbolt drivers; use certified Thunderbolt 2 cable; check computer compatibility.

Reset: OSD Menu > Reset to Factory Defaults

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

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