Panasonic CQ-C3401 - Manual (Page 13)

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CQ-C3401W CQ-C3401W
Troubleshooting
If You Suspect Something Wrong
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 Center. 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.
■ Common
The speaker wiring is reversed between right and left.
a Perform the speaker wiring in accordance with the wiring diagram.
The speaker channels
are reversed between
right and left.
Balance/fader setting is not appropriate.
a Readjust Balance/fader.
There is a break, a short circuit, poor contact or wrong wiring regarding the
speaker wiring.
a Check the speaker wiring.
No sound from
speaker(s)
Some operations are not executable in particular modes such as menu mode.
a Read the operating instructions carefully and cancel the mode. If the
unit is still out of order, consult your dealer.
Some operations are
not executable.
Alternator noise comes from the car.
a Change the wiring position of the ground lead.
a Mount a noise filter on the power supply.
Noise is made in step
with engine revolu-
tions.
There is an electromagnetic-wave generator such as a cellular phone near the
unit or its electrical lines.
a Keep the electromagnetic-wave generator such as a cellular phone away
from the unit and the wiring of the unit. If noise cannot be
eliminated due to the wiring harness of the car, consult your dealer.
The contact of the ground lead is poor.
a Make sure that the ground lead is connected to an unpainted part of the
chassis securely.
Noise
You cannot operate the unit while the demonstration screen appears.
a Press [DISP] to end the demonstration screen.
If the demonstration screen appears frequently, there is a possibility that poor
contact or wrong wiring arises between the battery lead of the unit and the
battery cable of the car. (The battery lead should be always powered.)
a Check the battery wiring in accordance with the wiring diagram.
The demonstration
screen displayed and
no operable
MUTE is set to ON.
a Set MUTE to OFF.
The wiring of speaker lines is not correct, or a break or poor contact arises.
a Check the wiring in accordance with the wiring diagram. ( a Installation
Instructions)
Sound is not
generated.
The power cord (battery, power and ground) is connected in the wrong way.
a Check the wiring.
Fuse blows out.
a Eliminate the cause of fuse blowout and replace the fuse with new one.
Consult your dealer.
No power to the unit
Problem
Possible cause a Possible solution
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.
■ Common (continued)
The safety device works.
a Consult your dealer, or your nearest Panasonic Service Center.
The power of the unit
fails unintentionally.
The plus and minus terminals at right and left channels of speakers are con-
nected reversely.
a Perform the speaker wiring in accordance with the wiring diagram.
The sound field is not
clear in the stereo
mode. Central sound is
not settled.
Problem Possible cause a Possible solution
■ Radio
The contact of the battery lead is poor, or the battery lead is not always
powered.
a Make sure that the battery lead is connected securely, and preset sta-
tions again.
Preset stations cannot
be stored.
The number of receivable stations is less than 6.
a Move to an area where receivable stations number is maximum, and try
presetting.
The number of auto
preset stations is less
than 6.
Antenna installation or wiring of antenna cable is faulty.
a Check whether the antenna mounting position and its wiring are correct.
In addition, check to see whether the antenna ground is securely con-
nected to the chassis.
No power is supplied to the antenna amplifier (when using a film antenna, etc.).
a Check the wiring of the antenna battery lead.
Poor reception or
noise
Problem Possible cause a Possible solution
■ CD
Something such as a peeled label obstructs the disc coming out.
a Consult your dealer.
The microcontroller in the unit operates abnormally due to noise or other fac-
tors.
a Unplug the power cord and plug it again. In case the unit is still out of
order, consult your dealer.
Disc unejectable
The unit is not sufficiently secured.
a Secure the unit to the console box.
The unit is tilted at over 30˚ in the front-to-end direction.
a Make the angle 30˚ or less.
Sound skipping due to
vibration
There is a flaw or foreign object on the disc.
a Remove the foreign object, or use a flawless disc.
Sound skipping or
noise
The disc is inserted upside down.
a Insert a disc correctly.
There is a flaw or foreign object on the disc.
a Remove the foreign object, or use a flawless disc.
No playback or disc
ejected
Problem Possible cause a Possible solution