LG 22SM3B Owners Manual - Page 14
Screen color is abnormal., The operation does not work normally., Timer
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ENGLISH 14 The audio function does not work. No sound? Problem Sound is too dull. Sound is too low. Action yySee if the audio cable is connected properly. yyAdjust the volume. yySee if the sound is set properly. yySelect the appropriate equalizer sound. yyAdjust the volume. Screen color is abnormal. Problem Screen has poor color resolution (16 colors). Screen color is unstable or mono-colored. Do black spots appear on the screen? Action yySet the number of colors to more than 24 bits (true color). Select Control Panel → Display → Settings → Color Table menu in Windows. yyCheck the connection status of the signal cable. Or, re-insert the PC video card. yySeveral pixels (red, green, blue, white, or black color) may appear on the screen, which can be attributable to the unique characteristics of the LCD panel. This is not a malfunction of the LCD. The operation does not work normally. Problem The power suddenly turned off. Action yyIs the Timer set? yyCheck the power control settings. Power interrupted.