Manual for 24CN670N

Manual for 24CN670N

Brand: LG logo LG

Category: Desktop Computer

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 7:09 p.m.

Manual Publish Date: 2020-01-01

Warranty Information

Refer to the LG Electronics website (www.lg.com) for information on licenses and warranty.

  • Cleaning: Use recommended cleaning chemicals like Isopropanol 70% or Ethanol 70%. Always turn off the monitor and unplug the power cable before cleaning. Use a soft cloth and avoid excessive force. Do not use benzene or thinners.
  • Assembly: Check all components are included. Assemble the stand by following the instructions. Use cable holders for tidying up cables.
  • Installation: Install on a table ensuring sufficient ventilation (at least 100 mm from the wall). Connect the power cord and turn on the monitor. Wall mounting is also possible with a compatible bracket.
  • Adjustments: Adjust stand height and screen angle for comfortable viewing. The monitor also features a swivel stand and a pivot feature (90-degree rotation).
  • Connections: Connect to a PC via HDMI, DisplayPort, or USB-C. Connect audio devices to the headphone and microphone port. LAN and SFP connections are available for network connectivity.
  • User Settings: Access the OSD menu to adjust Quick Settings, Input, Picture, Sound, and General options.

Troubleshooting and error codes

Troubleshooting Solution
Nothing is displayed on the screen.
Is the monitor's power cord plugged in? Check if the power cord is correctly plugged into the power outlet.
Is the power LED on? Check the power cable connection and press the power button.
Is the power on and the power LED displaying white? Check that the connected input is enabled. (See "Input")
Is the [No Signal] message being displayed? This is displayed when the signal cable between the PC and the monitor is missing or disconnected. Check the cable and reconnect it.
Is the [Out of Range] message being displayed? This occurs when signals transferred from the PC (graphics card) are out of the horizontal or vertical frequency range of the monitor. Please see the Product Specification section of this manual to set the appropriate frequency.
Screen display is unstable and shaky. / Images displayed on the monitor leave shadow trails. Solution
Did you select the appropriate resolution?
  • If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Change the resolution to 1080p or the recommended resolution.
  • Not setting the graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed screen, a truncated display area or misalignment of the display.
  • The setting methods may be different depending on the computer or operating system, and some resolutions may not be available depending on the performance of the graphics card. If this is the case, contact the manufacturer of the computer or graphics card for assistance.
Does image sticking occur even when the monitor is turned off? Displaying a still image for a prolonged time may cause damage to the screen, resulting in the retention of the image. To extend the lifetime of the monitor, use a screensaver.
Are there spots on the screen? When using the monitor, pixilated spots (red, green, blue, white, or black) may appear on the screen. This is normal for an LCD screen. It is not an error, nor is it related to the monitor's performance.
Some features are disabled. Solution
Are some functions not available when you press the Menu button? The OSD is locked. Disable [OSD Lock] in [General].
Do you see an "Unrecognised monitor, Plug and Play (VESA DDC) monitor found" message? Solution
Have you installed the display driver?
  • Be sure to install the display driver from our website: http://www.lg.com.
  • Make sure to check if the graphics card supports Plug and Play function.
No sound from the headphone port. Solution
Are images displayed without sound?
  • Make sure that the headphone port connections are made properly.
  • Try increasing the volume with keys.
  • Set the audio output of the PC to the monitor you are using. (The settings may differ depending on the operating system (OS) you use.)
RFID card is not working. Solution
Did you tag the RFID card on the RFID logo() on the front of monitor?
  • Check if the RFID card supports RFID reader.
  • Turn off the monitor and turn it on again.
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