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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
?
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.
?
The memory is erased when the ignition is turned
✔ The ignition and battery wire are incorrectly
☞ Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
?
There's no loudness
effect.12
✔ You're using Non-fading preout.
☞ Loudness has no effect in Non-fading preout.
?
The Non-fading output can't be turned ON or
✔ The <Switching preout> (page 30) is set is set on Rear preout.
☞ Change it to Non-fading preout.
?
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
✔ The input/output wires or wiring harness are connected
✔ The values of Volume offset are
✔ The <Built-in Amp Mute Setting> (page 31) is
?
The sound quality is poor or
✔ One of the speaker wires is being pinched by a screw in the car.
✔ The speakers are not wired
?
Non-fading output, Non-fading Low Pass Filter and Non-fading
OFF.10
setting can't be
connected.11
✔ The <Switching preout> (page 30) is set on Rear preout.
✔ The <Non-fading output> (page 14) is
✔ The <Dual zone system> (page 16) is
OFF.14
?
There's no Front High Pass Filter and Rear High Pass Filter
✔ The Non-fading preout is being used.
?
The Touch Sensor Tone doesn't
✔ The preout jack is being used.
?
The Dimmer function doesn't work.
✔ The Dimmer wire isn't connected correctly.
— 39 —
☞ Center the fader and balance settings.
☞ Reconnect the input/output wires or the wiring harness correctly.
See the section on <Connecting Wires to Terminals>.
low.24
☞ Turn up the Volume offset, referring to the section on <Audio
control> (page 8).
☞ Turn it OFF.
distorted.25
☞ Check the speaker wiring.
correctly.27
☞ Reconnect the speaker wires so that each output terminal is
connected to a different speaker.
done.28
☞ Set it on Non-fading preout.
☞ Turn it ON.
☞ Turn it OFF.
☞ There's no effect in Non-fading preout.
sound.34
☞ The Touch Sensor Tone can't be output from the preout jack.
☞ Check the Dimmer wire connection.
side.21
incorrectly.22
ON.100
OFF.29
ON.30
effect.31
38-1
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