Troubleshooting - Panasonic PP103910 Operating Instructions Manual

Troubleshooting

If you suspect something wrong
Check and take steps as described below.
If the described suggestions do not solve the problem, it is
recommended to take the unit to your dealership. The
product should be serviced only by qualified personnel.
Please refer the checking and the repair to professionals.
We shall not be liable for any accidents arising out of
neglect of checking the unit or your own repair after your
checking.
Never take measures especially for those other than indi-
cated by italic letters in "Possible Solution" described
below because those are too dangerous for users to han-
dle themselves.
Common
Problem
No power to the unit
Sound is not generated.
Noise
Noise is made in step with
engine revolutions.
Some operations are not
executable.
Possible cause
The power cord (battery, power and ground) is connected in the
wrong way.
aCheck the wiring.
MUTE is set to ON.
a Set MUTE to OFF.
There is contact between the external mute lead and the chassis.
aConnect the external mute lead correctly. If the lead is unused,
insulate 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.
There is an electromagnetic-wave generator such as a cellular phone
near the unit or its electrical lines.
a Keep 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 eliminated due to the wiring harness of the
truck, consult your dealership.
The contact of the ground lead is poor.
aMake sure that the ground lead is connected to an unpainted
part of the chassis securely.
Alternator noise comes from the truck.
aChange the wiring position of the ground lead.
aMount a noise filter on the power supply.
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 dealership.
Warning
¡Do not use the unit in an irregular condi-
tion, for example, without sound, or with
smoke or a foul smell, which can cause
ignition or electric shock. Immediately
stop using the unit and consult your deal-
ership.
¡Never try to repair the unit by yourself
because it is dangerous to do so.
a Possible solution
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