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LG 65UM3F UM3F Series - User Manual

LG 65UM3F UM3F Series
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OWNER’S MANUAL
LG Digital Signage
(MONITOR SIGNAGE)
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
Please read this manual carefully before operating your set and retain it for future
reference.
43UM3F
43UH5F
43UM3DF
49UM3F
49UH5F
49UM3DF
49UH7F
55UM3F
55UH5F
55UM3DF
55UH7F
65UM3F
65UH5F
65UM3DF
65UH7F

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Questions and Answers

  • L
    Linda MathisSep 9, 2025
    Why is there no image on my LG Digital Signage?
    • M
      Mariah LongSep 10, 2025
      If no image is displayed on your LG Digital Signage, ensure the power cord is correctly plugged into the power outlet. Also, check the signal cable and access the input menu to check the input signal. If the signal from the PC (Graphics card) is out of the vertical or horizontal frequency range of the product, adjust the frequency range by referring to the Specifications in this manual.
  • J
    John DavisAug 25, 2025
    Why is no image displayed on my LG Digital Signage?
    • N
      Nicole TurnerAug 25, 2025
      There might be several reasons why your LG Digital Signage is not displaying an image. First, ensure that the power cord is correctly plugged into the power outlet. Also, check the signal cable and access the input menu to verify the input signal. If the signal from the PC's graphics card is out of the product's vertical or horizontal frequency range, adjust the frequency range according to the specifications.
  • I
    iroweAug 25, 2025
    What to do if the screen image looks abnormal on my LG Digital Signage?
    • K
      Kristen CarterAug 26, 2025
      If the screen image on your LG Digital Signage looks abnormal, it could be due to the graphics card resolution and frequency not being supported by the product. Verify that the graphics card resolution and frequency are supported. If the frequency is out of range, set it to the recommended resolution in the “Display” settings in the Control Panel. Another potential cause is an improper input signal connected to the signal port. Ensure that you connect the appropriate signal cable that matches the source input signal.
  • A
    Alison OsborneSep 23, 2025
    What to do if the 'Unknown Product' message appears when connecting my LG 65UM3F UM3F?
    • W
      Wanda VelazquezSep 23, 2025
      If you see an 'Unknown Product' message, check if the function is supported by referring to the graphics card user manual.
  • K
    Kevin EvansSep 12, 2025
    What to do if the audio function does not work on LG Digital Signage?
    • P
      pdavisSep 12, 2025
      If the audio function does not work on your LG Digital Signage, verify that the audio cable is connected properly. Adjust the volume and ensure the sound is set properly. Also, select the appropriate equalizer sound and check the volume level.
  • T
    Thomas RobertsSep 15, 2025
    What to do if LG 65UM3F UM3F shows 'Unknown Product' message?
    • J
      jbirdSep 15, 2025
      If the 'Unknown Product' message appears when your LG Digital Signage is connected, check if the function is supported by referring to the graphics card user manual.
  • K
    Kimberly HallSep 4, 2025
    Why does after-image appear on my LG Digital Signage?
    • L
      Linda TurnerSep 4, 2025
      If after-image appears on your LG Digital Signage, and you use a fixed image for a long time, this may be because the pixels may be damaged. Use the screen-saver function. Note that this is normal for LCD screen products.
  • S
    sleeSep 5, 2025
    What to do if the Unknown Product message appears when connecting LG 65UM3F UM3F Digital Signage?
    • H
      Heather MillerSep 5, 2025
      Check if the function is supported by referring to the graphics card user manual.
  • A
    allenheatherSep 23, 2025
    What to do if the Unknown Product message appears when my LG 65UM3F UM3F Digital Signage is connected?
    • N
      nparksSep 23, 2025
      If the 'Unknown Product' message appears when your LG Digital Signage is connected, check if the function is supported by referring to the graphics card user manual.
  • J
    Jocelyn MooreAug 30, 2025
    Why is the screen color abnormal on my LG 65UM3F UM3F Digital Signage?
    • A
      Amanda PowellAug 30, 2025
      If the screen color on your LG Digital Signage appears abnormal, ensure that the number of colors is set to more than 24 bits (true color) via Control Panel - Display - Settings - Color Table in Windows. Also, check the connection status of the signal cable, and if necessary, re-insert the PC graphics card. Note that several pixels (red, green, white, blue or black) may appear, which is normal for LCD panels and not a malfunction.

LG 65UM3F UM3F Series Specifications

General IconGeneral
Screen Size65 inches
Panel TypeIPS
Contrast Ratio1200:1
Viewing Angle (H x V)178° x 178°
Response Time8 ms
Operating SystemwebOS
OrientationLandscape / Portrait
Operating Hours16/7
Display TypeLED
Resolution3840 x 2160
InputHDMI, USB, RS-232C
OutputAudio Out
External ControlRS-232C

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