LG Electronics 42LS75A 49LS75A 55LS75A Troubleshooting, No image is displayed, Problem Action

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TROUBLESHOOTING 43

TROUBLESHOOTING

No image is displayed

Problem	Action
Is the product power cord	yyCheck if the power cord is correctly plugged into the power
connected?	outlet.
Does the Out of range message	yyThe signal from the PC (video card) is out of the vertical
appear?	or horizontal frequency range of the product. Adjust the
	frequency range by referring to the Specifications in this
	manual.
	* Maximum resolution: 1920 x 1080 (60Hz)
Does the Check signal cable	yyThe signal cable between PC and product is not connected.
message appear?	Check the signal cable.
	yyPress the INPUT menu in the remote Control to check the
	input signal.

ENGLISH

The Unknown Product message appears when the product is connected.

		Problem			Action
	Did you install the driver?				yyCheck if the Plug & Play function is supported by referring to
					the video card user manual.

		The screen image looks abnormal.

		Problem			Action
	Is the screen position wrong?				yyCheck if the video card resolution and frequency are
					supported by the product. If the frequency is out of range,
					set to the recommended resolution in the Control Panel
					Display Setting menu.
	The screen is displayed abnormally.				yyThe proper input signal is not connected to the signal port.
					Connect the signal cable that matches with the source input
					signal.

NOTE

••The software-related contents may be changed without prior notice due to upgrade of the product functions.

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Contents Monitor Signage Table of Contents Licenses Accessories Assembly and PreparationScrews Optional AccessoriesSP-2100 AN-WF500 Power CordButtons Description Parts and ButtonsButtons Connection PanelConnecting the Speakers Connecting the StandUsing Kensington Lock Connecting IR & Light SensorPortrait Layout Connecting the OPS OPS Player Removing the LG Logo Attaching and removing the LG Logo BracketInstalling on a Wall Securing the monitor to a wall optional Number and Alphabet buttons Remote ControlVolume Up/Down Button A ButtonUSB Menu Control ExitMaking Connections Connecting to a PCExternal Device Connection Direct Connection Using the Router Using the InternetHD Receiver/DVD/VCR Camcorder/Camera/Gaming Device English Daisy Chain Monitors Using the Multi Display Mode function Remote Control Home Using the Input ListUsing My Media Connecting USB storage devicesTips for using USB storage devices Supported External Subtitle Format To use Select Play Remote Control HomeTo set Device Selection Remote Control Home Files Supported by My MediaSupported Video Codec Supported Internal Subtitle FormatSupported Photo File Supported Audio FileViewing Videos To play video files on display Remote Control HomeTips for Playing Video Files English Listening to Music Viewing image files Remote Control HomeViewing music files Remote Control Home Viewing PhotosSettings File Manager SuperSign ContentsInformation Picture ID Settings Quick Settings Main Menu SettingsPicture Settings Remote Control Settings Picture Picture Adjust Real Cinema NoiseReduction Mpeg Noise Reduction Black LevelEnglish Sound Settings To Set Your Network Remote Control Settings Network SettingsNetwork Wi-Fi Connection Tips for Network Setting Tips for Wireless Network Setting General SettingsResets all monitor settings No image is displayed TroubleshootingDoes the Check signal cable Problem ActionAudio function does not work Screen color is abnormal Problem ActionOperation does not work normally Problem Action After-image appears on the product42LS75A Product SpecificationsApplicable only for models that support the speakers 49LS75A Mm x 637.4 mm x 31.7 mm / 15.6 kg 55LS75A Mm x 713.7 mm x 31.7 mm / 20.7 kg 135.1 Product Dimensions49LS75A 1230.4 28.8 31.7 701 776 713 135.5 727.4 415.2 400 150 150.6 DTV mode Hdmiops / DVI / Displayport PC Support ModeHorizontal Vertical Resolution Frequency Frequency Hz KHz Code Hex Function Remarks IR CodesSome key codes are not supported depending on the model Communication Parameter Connecting the cableRS-232C Configurations To Control Multiple ProductsHexadecimal Command Reference ListEnglish Transmission Transmission/Reception ProtocolAcknowledgement Contrast Command k g Power Command k a Energy Saving Command j qSelect Input Command x b Aspect Ratio Command k cTransmission Kt Set ID DataCr Volume Control Command k f Adjusts the playback volume Sound mode Command d y Selects a sound modeDay and Time 2 hour/minute/second are set Auto Power Off 4 Hours Command m n On Timer Input Command f uLanguage Command f i Sets the OSD language Current temperature Command d n Reset Command f kKey Command m c White Balance Green Gain Command j n White balance red gain Command j mScreen Off Command k d Tile ID Command d Backlight Command m g Check Tile Mode Command d zTile Mode Command d d Natural Mode in Tile mode Command d j Power On Delay Command f h DPM Select Command f jIR Operation Command t p Daylight Saving Time Command s d Local Key Operation Command t oStatus Command s Check Screen Command t z Sets Check ScreenCopyright notices are available for download