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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>.
?
The TEL mute function does not
✔ The TEL mute wire is not connected properly.
☞ Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
?
The TEL mute function turns ON even though the TEL mute wire is
not
connected.16
✔ 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.
17
✔ Tuner source is selected.
☞ High-pitched tone isn't compensated for when in Tuner source.
OFF.10
connected.11
work.15
?
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
☞ Turn up the Volume offset, referring to the section on <Audio
control> (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.
?
Even though Synchronize Clock is ON, the clock can't be
✔ 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.
✔ The antenna control wire is not
☞ Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
— 31 —
bad.23
low.24
distorted.25
correctly.27
connected.40
side.21
incorrectly.22
adjusted.35
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