Troubleshooting - Panasonic CQ-C3301N Operating Instructions Manual

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Troubleshooting

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If You Suspect Something Wrong
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Check and take steps as described below.
If the described suggestions do not solve the problem, it is recom-
mended to take the unit to your nearest authorized Panasonic
Service Centre. The product should be serviced only by qualified
personnel. Please refer the checking and the repair to professionals.
Panasonic shall not be liable for any accidents arising out of neglect
of checking the unit or your own repair after your checking.
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Common
Problem
The power cord (battery, power and ground) is connected in the wrong way.
aCheck the wiring.
No power to the unit
Fuse blows out.
aEliminate the cause of fuse blowout and replace the fuse with new one.
Consult your dealer.
MUTE is set to ON.
aSet MUTE to OFF.
There is contact between the external mute lead and the chassis.
Sound is not aConnect the external mute lead correctly. If the lead is unused, insulate
generated. it.
The wiring of speaker lines is not correct, or a break or poor contact arises.
aCheck the wiring in accordance with the wiring diagram. (Installation
Instructions)
You cannot operate the unit while the demonstration screen appears.
aPress [DISP] to end the demonstration screen.
The demonstration
If the demonstration screen appears frequently, there is a possibility that poor
screen displayed and
contact or wrong wiring arises between the battery lead of the unit and the
no operable
battery cable of the car. (The battery lead should be always powered.)
aCheck the battery wiring in accordance with the wiring diagram.
There is an electromagnetic-wave generator such as a cellular phone near the
unit or its electrical lines.
aKeep the electromagnetic-wave generator such as a cellular phone away
from the unit and the wiring of the unit. If noise cannot be eliminated
Noise
due to the wiring harness of the car, consult your dealer.
The contact of the ground lead is poor.
aMake sure that the ground lead is connected to an unpainted part of the
chassis securely.
Noise is made in step Alternator noise comes from the car.
with engine revolu- aChange the wiring position of the ground lead.
tions. aMount a noise filter on the power supply.
Some operations are not executable in particular modes such as menu mode.
Some operations are
aRead the operating instructions carefully and cancel the mode. If the
not executable.
unit is still out of order, consult your dealer.
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CQ-C3301N
Warning
¡Do not use the unit in an irregular condition,
for example, without sound, or with smoke or
a foul smell, which can cause ignition or elec-
tric shock. Immediately stop using the unit
and consult your dealer.
¡Never try to repair the unit by yourself
because it is dangerous to do so.
Possible cause Possible solution
a
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Common (continued)
Problem
Balance/fader setting is not appropriate.
aReadjust Balance/fader.
No sound from
There is a break, a short circuit, poor contact or wrong wiring regarding the
speaker(s)
speaker wiring.
aCheck the speaker wiring.
The speaker channels
The speaker wiring is reversed between right and left.
are reversed between
aPerform the speaker wiring in accordance with the wiring diagram.
right and left.
The sound field is not
The plus and minus terminals at right and left channels of speakers are con-
clear in the stereo
nected reversely.
mode. Central sound is
aPerform the speaker wiring in accordance with the wiring diagram.
not settled.
The power of the unit The safety device works.
fails unintentionally. aConsult your dealer, or your nearest Panasonic Service Centre.
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Radio
Problem
Antenna installation or wiring of antenna cable is faulty.
aCheck whether the antenna mounting position and its wiring are correct.
In addition, check to see whether the antenna ground is securely con-
Poor reception or
nected to the chassis.
noise
No power is supplied to the antenna amplifier (when using a film antenna, etc.).
aCheck the wiring of the antenna battery lead.
FM Stereo broadcast is The MONO mode is active.
received only in mono. aCancel the MONO mode.
Only strong signal sta- The LOCAL mode is active.
tions can be received. aCancel the LOCAL mode.
The number of auto The number of receivable stations is less than 6.
preset stations is less aMove to an area where receivable stations number is maximum, and try
than 6. presetting.
The contact of the battery lead is poor, or the battery lead is not always
Preset stations cannot powered.
be stored. aMake sure that the battery lead is connected securely, and preset sta-
tions again.
Possible cause a Possible solution
Possible cause Possible solution
a
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