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CQ-C7403U/C7303U/C7203U/C7103U
34
Troubleshooting
Common (continued)
Some operations
are not executable.
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 dealer.
Problem
Possible cause
a
Possible solution
No sound from
speaker(s)
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.
The speaker
channels are
reversed between
right and left.
The speaker wiring is confused between right and left.
a Perform the speaker wiring in accordance with the wiring diagram.
The sound field is
not clear in the
stereo mode.
Central sound does
not settled.
The plus and minus terminals at right and left channels of speakers are connected
reversely.
a Perform the speaker wiring in accordance with the wiring diagram.
Radio
Poor reception or
noise
Antenna installation or wiring of antenna cable is faulty.
a 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.).
a Check the wiring of the antenna battery lead.
The power fails
unintentionally.
The safety device works.
a Consult your dealer, or your nearest Panasonic Servicenter.
The number of auto
preset stations is
less than 6.
The number of receivable stations is less than 6.
a Move to an area where receivable stations number is maximum, and try pre-
setting.
Preset stations
cannot be stored.
The contact of the battery lead is poor, or the battery lead is not always powered.
a Make sure that the battery lead is connected securely, and preset stations
again.