VIEWSONIC CD4200 - Manual (Page 48)

ViewSonic CD4200 41
ENGLISH
TROUBLESHOOTING
There is no picture or sound.
▪ Make sure the AC adapter is connected.
▪ Verify that there is a valid source signal.
▪ Make sure the correct input mode is selected.
There is no picture from AV.
▪ Make sure the BRIGHTNESS is properly adjusted.
▪ The florescent lamp may have reached the end of its life.
Contact an authorized service center.
▪ Make sure the video source is plugged into the composite
video-in port.
There is no sound.
▪ Make sure the volume is not set to minimum.
▪ Make sure the sound is not muted
▪ Make sure that headphones are not connected.
There is no picture or sound , just noise.
▪ The source signal may be weak.
▪ Your provider may be experiencing difficulties.
▪ Check your input connections.
Picture is not clear.
▪ The source signal may be weak.
▪ The provider may be experiencing difficulties.
▪ Check input connections.