Panasonic CQ-C8300U - Manual (Page 53)

(
Problem
_J d
Possible cause Possible solution )
r ■S /■ N
Noise is made in
step with engine
revoiutions.
No sound from
spe3ker(s)
There is an electromagnetic-wave
generator such as a cellular phone
near the unit or its electrical lines.
The contact of the ground lead is
poor.
The speaker channels
are reversed between
right and left.
►
►
Balance/fader setting is not
appropriate.
There is a break, a short circuit,
poor contact or wrong wiring
regarding the speaker wiring.
Some speakers are out of order.
The speaker wiring is confused
between right and left.
Keep an 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.
Make sure that the ground lead is
connected to an unpainted part of the
chassis securely.
Change the wiring position of the
ground lead.
Mount a noise filter on the power supply.
Readjust balance/fader.
Check the speaker wiring.
Replace the speaker with new one.
Perform the speaker wiring in
accordance with the wiring diagram.
□ Radio
c
Problem
Poor reception or
noise
D C
Possible cause Possible solution
The number of auto
preset stations are
less than 6.
r ,
Preset stations cannot
be stored.
►
►
►
j
Antenna installation or wiring of
antenna cable is faulty.
Check whether the antenna mounting
position and its wiring are correct.
In addition, check to see whether the
antenna ground is securely connected
to the chassis.
No power is supplied to the
antenna amplifier (when using a
film antenna, etc.).
Check the wiring of the antenna
battery lead.
j
^The number of receivable stations
are less than 6.
Move to an area where receivable
stations number is maximum, and try
presetting.
J
fThe contact of the battery lead is
poor, or the battery lead Is not
always powered.
~ >
Make sure that the battery lead is
connected securely, and preset
stations again.
CQ-C840d/8300/8200/810QU
53