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.

✔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.

✔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.

?The memory is erased when the ignition is turned OFF.

✔The ignition and battery wire are incorrectly connected.

☞Connect the wire correctly, referring to the section on <Connecting Wires to Terminals> (page 28, 29).

?The 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> (page 28, 29).

?The 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 connected incorrectly.

☞Reconnect the input/output wires or the wiring harness correctly. See the section on <Connecting Wires to Terminals> (page 28, 29).

✔The values of Volume offset are low.

☞Turn up the Volume offset, referring to the section on <Audio Setup> (page 10).

✔The <Built-in Amp Setting> (page 23) is OFF.

☞Turn it ON.

?The 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.

?The Touch Sensor Tone doesn’t sound.

✔The preout jack is being used.

☞The Touch Sensor Tone can’t be output from the preout jack.

?The Dimmer function doesn’t work.

✔The Dimmer wire isn’t connected correctly.

☞Check the Dimmer wire connection.

✔The <Dimmer> (page 22) is OFF.

☞Turn it ON.

?The display blacks out while scrolling.

✔<Display Illumination Control> is set to OFF.

☞Refer to <Display Illumination Control> (page 22).

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> (page 28, 29).

?The desired frequency can’t be entered with the Direct Access Tuning.

✔A station that can’t be received is being entered.

☞Enter a station that can be received.

✔You’re trying to enter a frequency with a 0.01 MHz unit.

☞What can be designated in the FM band is to 0.1 MHz.

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