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What might seem to be a malfunction in your unit may
just be the result of slight misoperation or miswiring.
Before calling service, first check the following table
for possible problems.
General
? The power does not turn ON.01
✔ The fuse has blown.
☞ After checking for short circuits in the wires, replace the fuse with
one with the same rating.
? There’s a source you can’t switch.07
✔ There’s no media inserted.
☞ Set the media you want to listen to. If there’s no media in this
unit, you can't switch to each source.
✔ The Disc changer isn’t connected.08
☞ Connect the Disc changer. If the Disc changer isn’t connected to
it's input terminal, You can't switch to an external disc source.
? Even if Loudness is turned ON, high-pitched tone isn't compensated
for. 17
✔ Tuner source is selected.
☞ High-pitched tone isn't compensated for when in Tuner source.
? No sound can be heard, or the volume is low.
✔ The fader or balance settings are set all the way to one side.21
☞ Center the fader and balance settings.
✔ The values of Volume offset are low.24
☞ Turn up the Volume offset, referring to the section on <Audio
control> (page10).
? The sound quality is poor or distorted.25
✔ One of the speaker wires is being pinched by a screw in the car.
☞ Check the speaker wiring.
✔ The speakers are not wired correctly.27
☞ Reconnect the speaker wires so that each output terminal is
connected to a different speaker.
? The Touch Sensor Tone doesn’t sound.34
✔ The preout jack is being used.
☞ The Touch Sensor Tone can’t be output from the preout jack.
? Even though Synchronize Clock is ON, the clock can’t be adjusted.35
✔ The received RDS station isn’t sending time data.
☞ Receive another RDS station.
Tuner source
? Radio reception is poor.39
✔ The car antenna is not extended.
☞ Pull the antenna out all the way.
? It isn't the set Traffic information sound volume. 43
✔ The set sound volume is less than the tuner sound volume.
☞ If the tuner sound volume is louder than the set sound volume,the
tuner sound volume is used.
Troubleshooting Guide
KDC-M4524G_U.S 03.7.8 9:23 AM Page 27