LG 21 Manual

The LG 21 is a 21-inch LCD display with high-definition resolution, built-in HDMI and VGA inputs, integrated speakers, headphone jack, remote control, energy-saving features, and multiple picture modes. 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: 21-inch LCD panel, HDMI and VGA inputs, built-in speakers, headphone jack, power button, menu controls.

Feature	Description
HDMI Input	For high-definition video and audio connection
VGA Input	For computer video connection
Built-in Speakers	Integrated stereo speakers
Headphone Jack	For private audio listening
Power Input	For AC power connection
Menu Button	Access display settings and options
Auto Adjust	Automatically optimizes display settings
Input Select	Switches between HDMI and VGA inputs
Volume Controls	Adjusts speaker volume
Power LED	Indicates power status

Installation

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

1. Connect video source: Use HDMI or VGA cable to connect to computer or media device.
2. Connect audio: Use HDMI for audio or connect separate audio cables if needed.
3. Connect power: Plug power cord into AC outlet.
4. Turn on display: Press power button on front or side panel.

WARNING! Display is fragile; handle with care to avoid damage. Ensure all connections are secure before powering on.

First-Time Setup

Power on display; follow initial setup prompts if available.

1. Select input source: Press INPUT button to choose between HDMI and VGA.
2. Auto adjust: Press AUTO button to optimize display settings automatically.
3. Adjust picture settings: Use menu to set brightness, contrast, and color temperature.
4. Set audio levels: Adjust volume to preferred level using volume controls.

CAUTION! Ensure stable surface placement; avoid direct sunlight exposure.

Specifications

• Screen Size: 21 inches LCD
• Resolution: 1920x1080 Full HD
• Inputs: HDMI, VGA
• Audio: Built-in stereo speakers, headphone jack
• Response Time: 5ms
• Viewing Angle: 178°/178°
• Brightness: 250 cd/m²
• Contrast Ratio: 1000:1
• Power Consumption: <30W typical
• Power Source: 100-240V AC, 50/60Hz

Controls and Settings

Access OSD via MENU button. Front Panel: POWER, MENU, AUTO, INPUT, VOLUME +/-.

On-Screen Display: Brightness, Contrast, Color Temperature, Sharpness, Input Select, Audio Settings, Reset.

Picture Modes: Standard, Movie, Game, Reading. Color Temperature: Cool, Normal, Warm. Advanced Settings: Response Time, Sharpness, Gamma.

Connecting Devices

HDMI: For digital video and audio. VGA: For analog computer connection.

1. Turn off display and source device before connecting.
2. Connect HDMI or VGA cable to appropriate port.
3. Connect audio if using VGA input (separate audio cable required).
4. Select correct input source using INPUT button.

Tip: Use high-quality cables for best picture and sound quality.

Display Modes

Multiple preset modes for different usage scenarios.

1. Standard Mode: Balanced settings for general use
2. Movie Mode: Enhanced contrast and color for video content
3. Game Mode: Faster response time for gaming
4. Reading Mode: Reduced blue light for extended reading
5. Custom Mode: User-defined settings

Note: Mode changes can be made through the OSD menu or quick access buttons.

Energy Saving Features

Auto power off, sleep mode, and power saving settings available.

Energy Saver Mode: Reduces power consumption when enabled. Auto Standby: Automatically enters standby after specified inactivity period. Power LED Indicator: Shows power status and energy saving mode activation.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for screen; slightly damp cloth for casing.

CAUTION! Do not use alcohol, ammonia, or abrasive cleaners. Never spray liquids directly onto screen.

Regulatory Information

FCC Compliant: Class B digital device. Energy Star Certified: Meets energy efficiency standards. RoHS Compliant: Free of hazardous substances. Copyright © 2025 LG Electronics. For support, visit www.lg.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord disconnected	Check power connection; ensure outlet is working
No display	Input selection incorrect	Press INPUT button to select correct source
Poor image quality	Cable or settings issue	Check cable connections; press AUTO button
No sound	Volume muted or low	Check volume settings; ensure audio cable connected
Display flickering	Refresh rate mismatch	Adjust refresh rate in source device settings

Reset: Menu > System > Reset to factory defaults if needed.

Service: Contact LG customer support or visit www.lg.com