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Troubleshooting Guide
What might appear 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.
PROBLEM
The power does not turn on.
No sound can be heard, or the
volume is low.
Nothing happens when the
buttons are pressed.
The sound quality is poor or
distorted.
Radio reception is poor.
The memory is erased when
the ignition is turned off.
The TEL mute function does
not work.
The TEL mute function turns on
even though the TEL mute
cable is not connected.
MD mode cannot be set.
The MD cannot be inserted.
The MD does not load.
POSSIBLE CAUSE
The fuse has blown.
No ACC position on vehicle ignition.
The Attenuator function is turned on.
The fader and/or balance settings are set all the way to
one side.
The input/output cables or wiring harness are connected
incorrectly.
The computer chip in the unit is not functioning normally.
A speaker cable may be pinched by a screw in the car.
The speakers are not wired correctly.
The car antenna is not extended.
The antenna control cable is not connected.
The battery cable has not been connected to the proper
terminal.
The ignition and battery cable are incorrectly connected.
The TEL mute cable is not connected properly.
The TEL mute cable is touching a metal part of the car.
The faceplate was closed whilst the MD was being
ejected.
There is already an MD loaded.
The insertion orientation of the MD is incorrect or the MD
is upside down.
After checking for short circuits in the cables, replace the
fuse with one having the same rating.
Connect the same cable to the ignition as the battery cable.
Turn off the Attenuator function.
Reset the fader and/or balance settings.
Reconnect the input/output cables and/or the wiring harness
correctly. See the section on "Connecting Cables to
Terminals".
Press the reset button on the unit (see page 4).
Check the speaker wiring.
Reconnect the speaker cables so that each output terminal
is connected to a different speaker.
Pull out the antenna all the way.
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Pull the TEL mute cable away from the metal part of the car.
Press the eject(0) button and reinsert the MD.
Eject the currently loaded MD and then load the new one.
Insert the MD in the proper orientation.
— 41 —
SOLUTION
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