Troubleshooting guide

Some functions of this unit may be disabled by some settings made on this unit.

 !  • Cannot set up display.

The demonstration mode is not turned off as mentioned in <Demonstration mode setting> (page 32).

 !  • Cannot set the “Text Select”, “Side Select”, or “Status” setting for the “Display Select” item.

A display type is not selected as mentioned in <Selecting a display type> (page 24).

 !  • Cannot set up the subwoofer.

Cannot set up the low pass filter.

No output from the subwoofer.

 

“SubWoofer” is not set to ON as mentioned in <Audio

 

 

control> (page 8).

 

Cannot set up the subwoofer phase.

 ! 

 

“LPF SubWoofer” is set to “Through” as mentioned in

 

 

<Audio control> (page 8).

Contents

What might seem to be a malfunction in your unit may just be the result of a slight operation error or a wiring error. Before calling for service, first check the following table for possible problems.

General

 ?  The key beep does not sound

The Preout jack is in use.

The key beep cannot be output from the Preout jack.

 ?  • Sound cannot be heard.

The unit does not turn on.

Information shown on the display is incorrect.

The connectors are dirty.

Clean the connectors. Refer to <Cleaning the connector> (page 4).

Tuner source

 ?  Radio reception is poor.

The car antenna is not extended. Pull the antenna out all the way.

Disc source

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

The specified CD is quite dirty.

Clean the CD with reference to <Handling discs> (page 4).

The disc is severely scratched.

Try another disc instead.

Audio file source

 ?  The sound skips when an Audio file is being played.

The media is scratched or dirty.

Clean the media with reference to <Handling discs> (page 4).

The recording condition is bad.

Play the media again or use another media.

50 KDC-400U

English 51