Troubleshooting; If You Suspect Something Wrong; Common - Panasonic CQ-BT5107U 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
nearest authorized Panasonic Servicenter. 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.
Never take measures especially for those other
than indicated by
italic
Solution" 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)
22
CQ-BT5107U
letters in "Possible
The power cord (battery, power and ground) is connected in the wrong
way.
a
Check the wiring.
The sound volume level is zero (MUTE).
a
Turn [VOLUME] clockwise to increase the sound volume.
The wiring of speaker lines are not correct, or a break or poor contact
arises.
a
Check the wiring in accordance with the wiring diagram.
There is an electromagnetic-wave generator such as a mobile phone near
the unit or its electrical lines.
a
Keep an electromagnetic-wave generator such as a mobile 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 nearest Servicenter.
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.
Alternator noise comes from the truck.
a
Change the wiring position of the ground lead.
a
Mount 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 nearest Servicenter.
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.
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 electric
shock. Immediately stop using the unit and
consult your nearest Servicenter.
¡ Never try to repair the unit by yourself because
it is dangerous to do so.
a
Possible cause Possible solution