EN-20TROUBLESHOOTINGBefore sending your LCD monitor for servicing, please check the trouble-shooting list below to see if you can self-diagnose the problem.(HDMI/DP Mode)Problems Current Status RemedyNo PictureLED ON Using OSD, adjust brightnessand contrast to maximum orreset to their default settings.LED OFF Check the power switch. Check if AC power cord isproperly connected to themonitor.LED displays ambercolor Check if video signal cable isproperly connected at the backof monitor. Check if the power of computersystem is ON.Abnormal Sound(Only Audio-Inputmodel)(Optional)No sound, or soundlevel is too low Check the audio cable with thehost PC is connected. Check if the volume setup of thehost PC is in minimum positionand try to raise the volumelevel.