Manual for IPS LED MONITOR

Manual for IPS LED MONITOR

Brand: LG logo LG

Category: Monitor

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 8:30 p.m.

Warranty Information

Refer to the Owner's Manual (CD) for safety precautions and keep it for future reference. Ensure to read the Safety Precautions before using the product.

The manual covers the assembly and setup of the LG IPS LED Monitor, including unpacking, attaching the stand, and mounting options (table or wall). It details connecting the monitor to PCs and AV devices via D-SUB and HDMI. The manual also explains how to customize settings such as picture, color, display, and audio. Advanced functions like Reader Setting, SUPER ENERGY SAVING, Picture Mode, SUPER RESOLUTION+, DUAL DISPLAY, and DUAL WEB are described. Troubleshooting tips and product specifications for various models (22MP55HQ, 23MP55HQ, 24MP55HQ, 27MP55HQ) are provided. Finally, it offers guidance on proper posture for using the monitor.

Troubleshooting and error codes

No image appears Check the following before calling for service.
Is the power cord of the display connected?
  • Check and see if the power cord is connected properly to the power outlet.
Is the power indicator light on?
  • Press the Power button.
Is the power on and the power indicator White?
  • Adjust the brightness and the contrast.
Is the power indicator flickering?
  • If the display is in power saving mode, try moving the mouse or pressing any key on the keyboard to bring up the screen.
  • Try to turn on the PC.
Do you see an "OUT OF RANGE" message on the screen?
  • This message appears when the signal from the PC (video card) is out of horizontal or vertical frequency range of the display. See the 'Specifications' section of this manual and configure your display again.
Do you see a "NO SIGNAL" message on the screen?
  • When the monitor is on "No-Signal" in 5 minutes, the monitor goes to DPM mode.
Do you see an "OSD LOCKED" message on the screen?
  • You can secure the current control settings, so that they cannot be inadvertently changed. You can unlock the OSD controls at any time by pushing the MENU button for several seconds: the message "OSD UNLOCKED" will appear.
Display image is incorrect
Display Position is incorrect.
  • Press the AUTO button to automatically adjust your display image to the ideal setting.
On the screen background, vertical bars or stripes are visible.
  • Press the AUTO button to automatically adjust your display image to the ideal setting.
Any horizontal noise appearing in any image or characters are not clearly portrayed.
  • Press the AUTO button to automatically adjust your display image to the ideal setting.
  • Check Control Panel Display Settings and adjust the display to the recommended resolution or adjust the display image to the ideal setting. Set the color setting higher than 24 bits (true color).
The screen color is mono or abnormal.
  • Check if the signal cable is properly connected and use a screwdriver to fasten if necessary.
  • Make sure the video card is properly inserted in the slot.
  • Set the color setting higher than 24 bits (true color) at Control Panel Settings.
The screen blinks.
  • Check if the screen is set to interlace mode and if yes, change it to the recommend resolution.
Do you see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message?
Have you installed the display driver?
  • Be sure to install the display driver from the display driver CD (or diskette) that comes with your display. Or, you can also download the driver from our web site: http://www.lg.com.
  • Make sure to check if the video card supports Plug&Play function.
The screen is flickering.
Did you select the recommended resolution?
  • If the selected resolution is HDMI 1080i 60/50 Hz, the screen may be flickering. Change the resolution to the recommended resolution 1080P.
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