LG Electronics M4720C, M5520C owner manual Audio function does not work

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Troubleshooting

The audio function does not work.

No sound?

Sound is too dull.

Sound is too low.

See if the audio cable is connected properly.

Adjust the volume.

See if the sound is set properly.

Select the appropriate equalize sound.

Adjust the volume.

Screen color is abnormal.

Screen has poor color resolution (16 colors).

Screen color is unstable or mono-colored.

Do black spots appear on the screen?

Set the number of colors to more than 24 bits

(true color)

Select Control Panel - Display - Settings - Color Table menu in Windows.

Check the connection status of the signal cable.

Or, re-insert the PC video card.

Several pixels (red, green, white or black color) may appear on the screen, which can be attributable to the unique characteristics of the LCD panel. It is not a malfunction of the LCD.

The operation does not work normally.

The power suddenly turned off.

Is the sleep timer set?

Check the power control settings.

Power interrupted.

"CAUTION! FAN STOP!"

If the power is turned off after this message appears, it means that the fan is out of order. In this case, contact your local service center.

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Contents Monitor Signage Table of Contents Accessories AccessoriesSeparate purchase Stand kitConnecting the Stand M4720CM5520C Connecting the Speakers When the speakers are installed Install in Portrait Mode Using the Remote Control Name of the Remote Control ButtonsEnergy Saving Button Input Select ButtonClear button ARC ButtonName and Function of the Parts Rear ViewConnecting to External Devices When Connecting to your PCInput → → AUTO/SET When using the LAN When using AV input Daisy Chain MonitorsVesa Fdmi wall Mounting Video Input Component Input 480i/480p/576i/576p/720p/1080i/1080p Select ComponentHdmi Input 480p/576p/720p/1080i/1080p Select HDMI/DVIScreen Adjustment options Adjust ButtonUser Menus OSD SelectScreen Adjustment options For PC Analog signalAdjusts the USB options OSD MenuHow to adjust the screen automatically How to adjust the OSD On Screen Display screenUse the remote control to adjust the OSD screen Adjusting the display image Aspect RatioEnergy Saving Level 1 80% light Level 2 60% light Level 3 40% lightPicture Mode Backlight Advanced Control Color Temperature Color SettingsColor Management System Settings Picture Reset Return Picture Mode to the default factoryScreen Adjusting the audio function Adjusting the timer function Selecting the options Power Indicator Network SetupFactory Reset DPM SelectTile Mode Adjusts the tile optionsRow Tile mode product 1 ~ 9 c3 x r3 column ID10 RowWhen connecting the USB device Adjusts the USB optionsSelect Photo LIST, Music List or Movie List Precautions when using the USB device Photo List Photo ListPhoto Selection and PopUp Menu Photo ListHow to view photo SlideshowBGM Background Music RotateMusic List Music ListMusic Selection and PopUp Menu Play During stop Play the selected027 ‘Screen Saver’?Movie List Movie List Using the remote control Movie Selection and PopUp MenuPicture Size Sets to Full Screen or Original Size When you select the Movie OptionSubtitle File Sets to On or Off Close DivX Registration CodeDeactivation Troubleshooting No image is displayedTroubleshooting Audio function does not work Power SpecificationsLCD Panel Specifications Video Signal Input ConnectorEnvironmental ConditionsPC Mode Preset Mode Controlling the Multiple Product Command Reference List DATA1 DATA2 DATA3 Transmission / Receiving Protocol Controlling the Multiple Product Controlling the Multiple Product Controlling the Multiple Product BrightnessCommand h To adjust screen brightness Tint Real data mapping 0 to Red To Green A10 A11 A12 Auto ConfigureCommand j u A14 A15 A16 Acknowledgement XSet IDOK/NGDatax DataHex Mode A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 90H HDMI/DVI DTV A0H HDMI/DVI PC IR Codes Down Back Page Model