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Troubleshooting Guide
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

? T he power does not turn ON.
✔ The fuse has blown.
☞ After checking for short circuits in the wires,
replace the fuse with one with the same rat-
ing.
? There’s a source you can’t switch.
✔ 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.
☞ 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.
? T he memory is erased when the ignition is
turned OFF.
✔ The ignition and battery wire are incorrectly con-
nected.
☞ Connect the wire correctly, referring to the
section on 'Connecting Wires to Terminals'.
? T he TEL mute function does not work.
✔ The TEL mute wire is not connected properly.
☞ Connect the wire correctly, referring to the
section on 'Connecting Wires to Terminals'.
? T he TEL mute function turns ON even though the
TEL mute wire is not connected.
✔ The TEL mute wire is touching a metal part of the
car.
☞ Pull the TEL mute wire away from the metal
part of the car.
? Even if Loudness is turned ON, high-pitched tone
isn’t compensated for.
✔ 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.
☞ Center the fader and balance settings.
✔ The input/output wires or wiring harness are con-
nected incorrectly.
☞ Reconnect the input/output wires or the
wiring harness correctly. See the section on
'Connecting Wires to Terminals'.
✔ The values of Volume offset are low.
☞ Turn up the Volume offset, referring to the sec-
tion on 'Audio Control' (page 8).
? T he sound quality is poor or distorted.
✔ One of the speaker wires is being pinched by a
screw in the car.
☞ Check the speaker wiring.
✔ The speakers are not wired correctly.
☞ Reconnect the speaker wires so that each
output terminal is connected to a different
speaker.
? T he Touch Sensor Tone doesn’t sound.
✔ 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.
✔ The received RDS station isn’t sending time data.
☞ Receive another RDS station.

Tuner source

? Radio reception is poor.
✔ The car antenna is not extended.
☞ Pull the antenna out all the way.
✔ The antenna control wire is not connected.
☞ Connect the wire correctly, referring to the
section on 'Connecting Wires to Terminals'.
? It isn’t the set Traffic information sound volume.
✔ 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.

Disc source

? "AUX1" is displayed without achieving External
disc control mode.
✔ Unsupported disc changer is connected.
☞ Use the disc changer mentioned in the 'About
CD players/disc changers connected to this
unit' (page 4) of the section on 'Safety precau-
tions'.
? T he specified disc does not play, but another one
plays instead.
✔ The specified CD is quite dirty.
☞ Clean the CD.
✔ The disc is loaded in a different slot from that
specified.
☞ Eject the disc magazine and check the
number for the specified disc.
✔ The disc is severely scratched.
☞ Try another disc instead.
? A CD ejects as soon as it is loaded.
✔ The CD is quite dirty.
☞ Clean the CD, referring to the CD cleaning of
the section on 'About CDs' (page 6)