34|KDC-U546BTTroubleshooting GuideSome functions of this unit may be disabled bysome settings made on this unit.!• Cannot set up the subwoofer.• Cannot set up the low pass filter.• No output from the subwoofer.▲• “SUBWOOFER SET” of not set to ON.• Preout is not set to subwoofer.☞“SWITCH PREOUT” of (page 18).!Cannot set up the subwoofer phase.▲The Low Pass Filter is set to “THROUGH”.☞“LPF SUBWOOFER” of !The number of songs contained in “SONGS”category of this unit is different from thatcontained in “SONGS” category of iPod.▲Podcast files are not counted in this unit as this unitdoes not support the playback of podcast files.What might seem to be a malfunction in your unitmay just be the result of slight miss operation ormiss wiring. Before calling service, first check thefollowing table for possible problems.General?The operation check sound (beep sound) does notsound.✔The preout jack is being used.☞The operation check sound (beep sound) cannotbe output for the preout jack.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 oneplays instead.✔The specified CD is quite dirty.☞Clean the CD, referring to the CD cleaning of thesection on (page 3).✔The disc is severely scratched.☞Try another disc instead.Audio file source?The sound skips when an Audio file is beingplayed.✔The media is scratched or dirty.☞Clean the media, referring to the CD cleaning ofthe section on (page 3).✔The recording condition is bad.☞Record the media again or use another media.Hands-free phoning?The hands-free talk volume is low.✔The hands-free talk volume is set at a low level.☞The hands-free talk volume can be adjustedindependently. Adjust it during hands-freetalk.“MIC GAIN”, “NR LEVEL” and “EC LEVEL” of (page 20).?No sound is heard from the rear speakers.✔You are talking in the hand-free talk mode.☞No sound is heard from the rear speakers in thehands-free talk mode.?No beep is heard at reception of an incoming call.✔No beep is heard depending on the type of yourcell-phone.☞The “CALL BEEP” of (page 20)is set to ON.?Voice is not recognized.✔The vehicle window is open.☞If the surrounding noise is large, voice cannot berecognized properly. Close the vehicle windowsto reduce noise.✔Small voice.☞If voice is too small, it cannot be recognizedproperly. Speak into the microphone a little moreloudly and naturally.✔The person saying the voice tag is not the one whoregistered the it.☞Only the voice of the person who registered thevoice tag can be recognized.
