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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.
✔ No ACC position on vehicle
☞ Connect the same wire to the ignition as the battery wire.
?
Nothing happens when the buttons are
✔ The computer chip in the unit is not functioning normally.
☞ Press the reset button on the unit (page 4).
?
There's a source you can't
switch.05
✔ There's no tape 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 battery wire has not been connected to the proper terminal.
☞ Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
✔ The ignition and battery wire are incorrectly
☞ Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
?
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.
ignition.02
pressed.04
OFF.10
connected.11
?
No sound can be heard, or the volume is low.
✔ The fader or balance settings are set all the way to one
☞ Center the fader and balance settings.
✔ The input/output wires or wiring harness are connected
☞ Reconnect the input/output wires or the wiring harness correctly.
See the section on <Connecting Wires to Terminals>.
✔ The cassette tape is
☞ Try playing another cassette tape. If works fine, the first tape was
bad.
✔ The values of Volume offset are
☞ Increase the values of Volume offset. (page 6)
?
The sound quality is poor or
✔ One of the speaker wires is being pinched by a screw in the car.
☞ Check the speaker wiring.
✔ The tape head is
dirty.26
☞ Clean the tape head.
✔ The speakers are not wired
☞ Reconnect the speaker wires so that each output terminal is
connected to a different speaker.
?
The Security Code item isn't displayed in the Menu
✔ The Security Code function is already activated.
☞ When the Security Code function is activated it isn't displayed in
the menu items.
?
The Touch Sensor Tone doesn't
✔ The preout jack is being used.
☞ The Touch Sensor Tone can't be output from the preout jack.
?
Even though the vehicle light switch is turned ON, the unit's display
won't
dim.36
✔ The dimmer wire isn't connected.
☞ Connect the dimmer wire correctly.
?
The Dimmer function doesn't work.
✔ The Dimmer wire isn't connected correctly.
☞ Check the Dimmer wire connection.
— 27 —
— 27 —
bad.23
low.24
distorted.25
correctly.27
System.32
sound.34
38-1
side.21
incorrectly.22
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