Troubleshooting; If You Suspect Something Wrong; Common - Panasonic CQ-5109U 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
dealer or an authorized Panasonic Servicenter. The
product should be serviced only by qualified per-
sonnel. 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.
Never take measures especially for those other
than indicated by italic letters in "Possible Solu-
tion" described below because those are too
dangerous for users to handle 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.
No sound from speaker(s)
¡ 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 electric
shock. Immediately stop using the unit and
consult your dealer or an authorized Panasonic
Servicenter.
¡ Never try to repair the unit by yourself because
it is dangerous to do so.
Possible cause
The power cord (battery, power and ground) is connected in the wrong
way.
Check the wiring.
a
MUTE is set to ON.
Set MUTE to OFF.
a
The wiring of speaker lines are not correct, or a break or poor contact
arises.
Check the wiring in accordance with the wiring diagram.
a
There is an electromagnetic-wave generator such as a mobile phone
near the unit or its electrical lines.
Keep an electromagnetic-wave generator such as a mobile phone
a
away from the unit and the wiring of the unit. In case that noise
cannot be eliminated due to the wiring harness of the vehicle,
consult your dealer or an authorized Panasonic Servicenter.
The contact of the ground lead is poor.
Make sure that the ground lead is connected to an unpainted part
a
of the chassis securely.
Alternator noise comes from the vehicle.
Change the wiring position of the ground lead.
a
Mount a noise filter on the power supply.
a
Some operations are not executable in particular modes such as menu
mode.
Read the operating instructions carefully and cancel the mode. If
a
the unit is still out of order, consult your dealer or an authorized
Panasonic Servicenter.
BALANCE/FADER setting is not appropriate.
Readjust BALANCE/FADER.
a
There is a break, a short circuit, poor contact or wrong wiring regard-
ing the speaker wiring.
Check the speaker wiring.
a
Warning
Possible solution
a
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