Panasonic CQ-C3401 Problem Possible cause a Possible solution, ACheck the wiring, Generated, Tors

Troubleshooting

If You Suspect Something Wrong

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HCheck and take steps as described below.

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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.

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)

Problem

The sound field is not clear in the stereo mode. Central sound is not settled.

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Possible cause a Possible solution

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The plus and minus terminals at right and left channels of speakers are con- nected reversely.

aPerform the speaker wiring in accordance with the wiring diagram.

The power of the unit	The safety device works.
fails unintentionally.	aConsult your dealer, or your nearest Panasonic Service Center.

■ Common

Problem	Possible cause a Possible solution
	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.
Sound is not	aSet MUTE to OFF.
	The wiring of speaker lines is not correct, or a break or poor contact arises.
generated.
	aCheck the wiring in accordance with the wiring diagram. (a Installation
	Instructions)
	You cannot operate the unit while the demonstration screen appears.
The demonstration	aPress [DISP] to end the demonstration screen.
	If the demonstration screen appears frequently, there is a possibility that poor
screen displayed and
no operable	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.)
	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
Noise	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.
	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	Some operations are not executable in particular modes such as menu mode.
	aRead the operating instructions carefully and cancel the mode. If the
not executable.
	unit is still out of order, consult your dealer.
	Balance/fader setting is not appropriate.
No sound from	aReadjust Balance/fader.
	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.

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CQ-C3401W

■ Radio

Problem	Possible cause a Possible solution
	Antenna installation or wiring of antenna cable is faulty.
	aCheck whether the antenna mounting position and its wiring are correct.
Poor reception or	In addition, check to see whether the antenna ground is securely con-
	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.
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.

■ CD

Problem	Possible cause a Possible solution
	The disc is inserted upside down.
No playback or disc	aInsert a disc correctly.
ejected	There is a flaw or foreign object on the disc.
	aRemove the foreign object, or use a flawless disc.
Sound skipping or
	There is a flaw or foreign object on the disc.
noise	aRemove the foreign object, or use a flawless disc.
	The unit is not sufficiently secured.
Sound skipping due to	aSecure the unit to the console box.
vibration	The unit is tilted at over 30˚ in the front-to-end direction.
	aMake the angle 30˚ or less.
	Something such as a peeled label obstructs the disc coming out.
	aConsult your dealer.
Disc unejectable	The microcontroller in the unit operates abnormally due to noise or other fac-
	tors.
	aUnplug the power cord and plug it again. In case the unit is still out of
	order, consult your dealer.

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CQ-C3401W