ViewSonic CD4200 manual Troubleshooting, There is no picture or sound, There is no picture from AV

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.

ENGLISH

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.

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