Troubleshooting - Panasonic CQ-C3100AN Operating Instructions Manual

E

Troubleshooting

N
G
L
I
S
If You Suspect Something Wrong
H
31
Check and take steps as described below.
If the described suggestions do not solve the problem, it is rec-
ommended to take the unit to your nearest authorized Panasonic
Service Centre. The product should be serviced only by qualified
personnel.
■
Common
Problem
The power cord (battery, ACC and ground) is connected in the wrong way.
aCheck the wiring.
No power to the unit
Fuse blowout
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 generat- aConnect the external mute lead correctly. If the lead is unused, insulate
ed. it.
The wiring of speaker lines are 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 an electromagnetic-wave generator such as a cellular phone away
from the unit and the wiring of the unit. In case that noise cannot be
Noise
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.
aMount a noise filter on the power supply.
tions.
Some operations are not executable in particular modes such as menu mode.
Some operations are
aRead the operating instructions carefully and cancel the mode. In case
not executable.
the unit is still out of order, consult the dealer.
40
CQ-C3300/C3100A/C3100G/C3100VN
Caution:
¡Do not use the unit in an irregular condition,
for example, without sound, or with smoke or
foul smell, which can cause ignition or electric
shock. Immediately stop using the unit and
call the store where you purchased it.
¡Never try to repair the unit by yourself
because it is dangerous to do so.
Possible cause a Possible solution
■
Common (continued)
Problem
BAL/FAD setting is not appropriate.
aReadjust BAL/FAD.
No sound from speak-
There is a break, a short circuit, poor contact or wrong wiring regarding the
er(s)
speaker wiring.
aCheck the speaker wiring.
The speaker channels
The speaker wiring is confused 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.
■
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-
nected to the chassis.
Poor reception or
noise
No power is supplied to the antenna amplifier (when using a film antenna,
etc.).
aCheck the wiring of the antenna battery lead.
The MONO mode is active.
Stereo broadcast is
received only in mono. aCancel the MONO mode.
Only nearby stations The LOCAL mode is active.
can be received. aCancel the LOCAL mode.
The number of receivable stations is less than 6.
aMove to an area where receivable stations number is maximum, and try
The number of auto
presetting.
preset stations is less
than 6.
The LOCAL mode is active.
aCancel the LOCAL mode.
The contact of the battery lead is poor, or the battery lead is not always pow-
Preset stations cannot ered.
aMake sure that the battery lead is connected securely, and preset sta-
be stored.
tions again.
Possible cause a Possible solution
Possible cause a Possible solution
CQ-C3300/C3100A/C3100G/C3100VN
E
N
G
L
I
S
H
32
41