61GCDHSymptom Cause Countermeasure Page“Unsupported”is shown on thedisplay eventhough a CD isloaded.• The disc is not properly loaded. • Reload the disc. 3Disc does notplay when 1/3button is pressed.• The disc is dirty or scratched. • Wipe the disc clean or replacethe disc.3A specific partof a disc is notplayed.• The disc is dirty or scratched. • Wipe the disc clean or replacethe disc.3A CD-R or CD-RWdisc cannot beplayed.• The disc has not been finalized.• The recording conditions are bador the quality of the disc itselfit poor.• Finalize the disc then play it.• Use a properly recorded disc.3–MP3 and WMAfiles cannot beplayed.• The file formats, extensions orsettings made when the discwas created are not compatiblewith this unit.• Create discs with file formats,extensions or settingscompatible with this unit.56GTunerHSymptom Cause Countermeasure PageContinuous noiseis heard whenreceiving FMprograms.• Antenna cable is not properlyconnected.• Connect the antenna cableproperly.• Connect an outdoor antenna.8–If a problem occurs first check the following:1. Are the connections correct?2. Is the set being operated as described in the owner’s manual?3. Are the other devices operating properly?If this unit does not operate properly, check the items listed in the table below. If the problem persists,there may be a malfunction.In this case, disconnect the power immediately and contact your retail outlet.GGeneralHSymptom Cause Countermeasure PageSet does notoperate properly.• External noise or interference iscausing the set to malfunction.• Reset the microprocessor. 49Display not litand sound notproduced whenpower switchedto on.• Power cord not plugged insecurely.• Check the connections onthe set’s rear panel and theconnection of the power plug tothe power outlet.10Display lit butsound notproduced.• The speaker cables are notproperly connected.• The function is not switched tothe input source you want toplay.• The volume is set too low.• Connect securely.• Switch to the correct function.• Adjust the volume to anappropriate level.62323Display is off. • The Dimmer setting is set to“Off”.• Set to something other than“Off”.24For stereosources, thepositions of theinstruments areinverted.• The connections of the speakercables or input cables areinverted.• Check and remedy theconnections.6 – 10Power turns offsuddenly andPOWER indicatorflashes red.(Flashes at 0.25second intervals)• Set is damaged. • Turn off the power and contact aDENON service center.–“No NetworkConnection” isdisplayed.• The network is not properly setup.• Select a source other than thenetwork function.• Perform “Quick Setup”.23Quick setupguideTroubleshooting