Panasonic CQ-C8300U - Manual (Page 52)

Troubleshooting
Preliminary Steps
Check and take steps as described in the tables below.
If You Suspect Something Wrong
Immediately switch the power off.
Disconnect the power connector and check that there is
neither smoke nor heat from the unit before asking for
repairs. Never try to repair the unit by yourself because it
is dangerous to do so.
Caution;
• Do not use the unit if it malfunctions or if
there is something wrong.
• Do not use the unit in abnormal condition,
for example, without sound, or with smoke
or foul smell, which can cause ignition or
electric shock. Immediately stop using it and
call the store where you purchased it.
Troubleshooting Tips
□ Common
c
Problem D
The Power tails
unintentionally.
Sound is not
generated.
No power to the unit.
►
►
►
The demonstration
screen displayed and
no operable.
►
Some operations are
not executable.
►
[ Possible cause Possible solution ]
The power cord (battery, ACC and
ground) is connected in the wrong
way.
Check the wiring.
Fuse blow out. Eliminate the cause of fuse blow out
and replace the fuse with new one.
Consult your dealer.
f
The safety device works. Call the store where you purchased
the unit, or your nearest Panasonic
Servicenter.
MUTE is set to ON. Set MUTE to OFF.
The wiring of the speaker lines
are not correct, or a break or poor
contact arises. Check the wiring in accordance with
the wiring diagram.
c
You cannot operate the unit while
the demonstration screen appears. Press [DISP] (display) to end the
demonstration screen.
If the demonstration screen
appears frequently, there is a
possibility that poor contact or
wrong wiring arises between the
battery lead of the unit and the
battery cable of the car.
(The battery lead should be always
powered.)
V
Check the battery wiring in accordance
with the wiring diagram.
Some operations are not executable
in particular modes such as menu
mode.
Read the operating instructions
carefully and cancel the mode. In
case the unit is still out of order,
consult the dealer.
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CQ-C840Q/8300/8200/8100U