DNN990HD/ DNN770HD

• Cannot set up the subwoofer.
• Cannot set up subwoofer phase.
• No output from the subwoofer.
• Cannot set up the low pass filter.
• Cannot set up the high pass filter.

Subwoofer is not set to on.

Set the subwoofer to on.
See Speaker setup.

The dual zone function is enabled.

Set the dual zone function to off.
See Zone Control.

• Cannot select the output destination of the subsource in the dual zone.
• Cannot adjust the volume of the rear speakers.

The dual zone function is disabled.

Set the dual zone function to on.
See Zone Control.

• Cannot set up the equalizer.
• Cannot set up the crossover network.

The dual zone function is enabled.

Set the dual zone function to off.
See Zone Control.

“DSP Select” is set to “Bypass”.

Set “DSP Select” to “Through”.
See DSP select.

Radio reception is poor.

The car antenna is not extended.

Pull out the antenna all the way.

The antenna control wire is not connected.

Connect the wire correctly.
See “Connection” in the Quick Start Guide.

Cannot play audio files stored in a disc.

“CD Read” is set to “2”.

Set “CD Read” to “1”.
See Disc setup.

Cannot select a folder.

The random play function is enabled.

Turn off the random function.

Cannot perform repeat play during VCD playback.

The PBC function is enabled.

Turn off the PBC function.

The specified disc does not play, but another one plays instead.

The disc is quite dirty.

Clean the disc.
See Precautions on handling discs.

The disc is severely scratched.

Try another disc instead.

The sound skips when an audio file is being played.

The disc is scratched or dirty.

Clean the disc.
See Precautions on handling discs.

The recording condition is bad.

Record the file again or use another disc.

The Touch Sensor Tone doesn’t sound.

The preout jack is being used.

The Touch Sensor Tone cannot be output from the preout jack.