Troubleshooting - Panasonic Strada CN-NVD905U 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 qualifi ed personnel. Please refer
checking and 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 except those indicated by
italic letters in "Possible 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)
The power of the unit
fails unintentionally.
98
98
Possible cause

The power cord (battery, power and ground) is connected the wrong way.

Check the wiring.
 Fuse blows out.

Eliminate the cause of fuse blowout and replace the fuse with new one.
Consult your dealer.
 The vehicle engine is not running.

Start the engine. (ACC ON is also usable.)
 The wiring of speaker lines is not correct, or a break or poor contact exists.

Check the wiring in accordance with the wiring diagram. (Installation
Instructions)
 Turn the volume up.
 There is an electromagnetic-wave generator such as a cellular phone near the unit
or its electrical lines.

Keep the electromagnetic-wave generator such as a cellular phone away
from the unit and the wiring of the unit. In case the noise cannot be
eliminated due to the wiring harness of the car, consult your dealer.
 The contact of the ground lead is poor.

Make sure that the ground lead is connected to an unpainted part of the
chassis securely.

Alternator noise comes from the car.

Change the wiring position of the ground lead.

Mount a noise fi lter.
 Some operations are not executable in particular modes such as menu mode.

Read the Operating Instructions carefully and cancel the mode. If the unit is
still out of order, consult your dealer.

There is a break, a short circuit, poor contact or wrong wiring regarding the
speaker wiring.

Check the speaker.
 The safety device works.

Consult your dealer, or your nearest Panasonic Servicenter.
Warning
 If the unit is out of order (no power, no sound) or
in an abnormal state (has foreign objects in it, is
exposed to water, is smoking, or smells), turn it
off immediately and consult your dealer.
 Do not disassemble, modify the unit or attempt to
repair the product yourself. If the product needs to
be repaired, consult your dealer or an authorized
Panasonic Servicenter.

Possible solution