1. Introduction
This manual provides essential instructions for the safe and efficient use of your LG 24MR400-B 24-inch IPS FHD Monitor. Please read this manual thoroughly before operating the product and retain it for future reference.
The LG 24MR400-B is a 24-inch Full HD (1920x1080) IPS display featuring a 100Hz refresh rate, 5ms response time, and AMD FreeSync technology for smooth visuals. It offers sRGB 99% color gamut for accurate color reproduction.
Figure 1.1: Front view of the LG 24MR400-B monitor. This image shows the monitor from the front, highlighting its 3-side borderless design and the included MTC HDMI cable.
2. Safety Information
- Always use the power cord and adapter supplied with the monitor.
- Do not block ventilation openings. Ensure adequate space around the monitor for proper airflow.
- Avoid placing the monitor near heat sources or in direct sunlight.
- Do not expose the monitor to rain or moisture to prevent fire or electric shock.
- Handle the screen with care. Do not press or scratch the surface.
- Unplug the monitor from the power outlet before cleaning.
- Refer all servicing to qualified service personnel.
3. Package Contents
Verify that all components are present in your package. If any items are missing or damaged, contact your retailer.
- LG 24MR400-B Monitor Display
- Monitor Stand Base
- Monitor Stand Neck
- Power Adapter
- Power Cord
- HDMI Cable (MTC HDMI Cable)
- User Manual (this document)
4. Setup
4.1 Assembling the Stand
- Place the monitor screen face down on a soft, clean cloth to prevent scratches.
- Attach the stand neck to the stand base. Secure it with the captive screw on the bottom of the base.
- Align the assembled stand neck and base with the mounting slot on the back of the monitor. Push firmly until it clicks into place.
Figure 4.1: Rear view of the monitor with the stand attached. This image illustrates the monitor's back panel, including the stand connection point and various input ports.
Note: The monitor also supports VESA wall mounting (100x100mm). If using a wall mount, remove the stand and attach the VESA bracket (sold separately) to the four screw holes on the back of the monitor.
Figure 4.2: Rear view of the monitor without the stand. This image displays the VESA mounting pattern on the back of the monitor for alternative mounting solutions.
4.2 Connecting the Monitor
- Power Connection: Connect the power adapter to the monitor's power input port, then plug the power cord into a wall outlet.
- HDMI Connection: Connect one end of the supplied HDMI cable to the HDMI port on the back of the monitor and the other end to the HDMI output port on your computer or other video source.
- Other Connections (if applicable): If your model has other input ports (e.g., DisplayPort), connect them as needed.
Ensure all cables are securely connected.
5. Operating the Monitor
5.1 Power On/Off
To turn the monitor on or off, press the power button/joystick located on the bottom center of the monitor.
5.2 On-Screen Display (OSD) Menu
The OSD menu allows you to adjust various monitor settings such as brightness, contrast, color, input source, and more.
- Accessing the OSD: Press the joystick button once to bring up the main OSD menu.
- Navigation: Move the joystick up, down, left, or right to navigate through the menu options.
- Selection: Press the joystick button to select an option.
- Exit: Move the joystick left repeatedly or select the 'Exit' option to close the OSD menu.
Key OSD Settings:
- Picture: Adjust brightness, contrast, sharpness, and gamma.
- Color: Fine-tune color temperature, red/green/blue levels, and sRGB mode.
- Input: Manually select the input source (HDMI).
- Game Adjust: Enable/disable AMD FreeSync, adjust Black Stabilizer, and Response Time.
- General: Language, OSD Lock, Power LED, and Factory Reset.
6. Maintenance
- Cleaning the Screen: Gently wipe the screen with a soft, lint-free cloth. For stubborn marks, lightly dampen the cloth with water or a specialized screen cleaner. Do not spray cleaner directly onto the screen.
- Cleaning the Cabinet: Use a soft, dry cloth to wipe the monitor's casing. Avoid using abrasive cleaners or solvents.
- Power Off: Always unplug the monitor before cleaning.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power / Power LED off | Power cord not connected; Power outlet not working. | Ensure power cord is securely connected to monitor and outlet. Test outlet with another device. |
| No image on screen | Video cable not connected; Incorrect input source selected. | Check HDMI cable connection. Use OSD menu to select correct input source. Ensure computer is powered on. |
| Image is blurry or distorted | Incorrect resolution; Cable issue. | Set display resolution to 1920x1080. Check cable for damage or replace if necessary. |
| Screen flickers | Refresh rate mismatch; Cable issue; Graphics card driver. | Ensure refresh rate is set to 100Hz in display settings. Update graphics drivers. Try a different HDMI cable. |
| Colors are incorrect | Color settings in OSD; Graphics card settings. | Adjust color settings in the OSD menu. Calibrate display through your operating system. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | LG 24MR400-B |
| Screen Size | 24 Inches |
| Panel Type | IPS |
| Resolution | 1920 x 1080 (FHD) |
| Aspect Ratio | 16:9 |
| Refresh Rate | 100 Hz |
| Response Time | 5ms |
| Brightness (Typical) | 250 cd/m² |
| Contrast Ratio (Typical) | 1200:1 |
| Color Gamut (Typical) | sRGB 99% (CIE1931) |
| Connectivity | HDMI |
| Special Features | AMD FreeSync Premium |
| VESA Mount Compatible | Yes (100x100mm) |
| Dimensions (with stand) | 21.3 x 7.9 x 2 inches (approximate, based on product dimensions) |
| Weight (with stand) | 6.5 pounds (approximate) |
9. Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official LG website. You can find detailed support resources, driver downloads, and contact information there.
LG Official Support: https://www.lg.com/us/support