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Sony CDX-GT252MP Manual

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16
Troubleshooting
The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below, check the
connection and operating procedures.
General
No power is being supplied to the unit.
Check the connection or fuse.
The power antenna (aerial) does not extend.
The power antenna (aerial) does not have a relay box.
No sound.
• The ATT function is activated, or the Telephone ATT
function (when the interface cable of a car telephone
is connected to the ATT lead) is activated.
• The position of the fader control “FAD” is not set for
a 2-speaker system.
No beep sound.
• The beep sound is canceled (page 11).
• An optional power amplifier is connected and you are
not using the built-in amplifier.
The contents of the memory have been erased.
The power supply lead or battery has been
disconnected or it is not connected properly.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the position of the ignition
is switched.
The leads are not matched correctly with the car’s
accessory power connector.
During playback or reception, demonstration
mode starts.
If no operation is performed for 5 minutes with
“DEMO-ON” set, demonstration mode starts.
t Set “DEMO-OFF” (page 11).
The display disappears from/does not appear
in the display window.
• The dimmer is set to “DIMMER-ON” (page 11).
• The display disappears if you press and hold
(SOURCE/OFF).
tPress (SOURCE/OFF) on the unit until the
display appears.
• The connectors are dirty (page 14).
The Auto Off function does not operate.
The unit is turned on. The Auto Off function activates
after turning off the unit.
t Turn off the unit.
Radio reception
The stations cannot be received.
The sound is hampered by noises.
• The connection is not correct.
t Connect a power antenna (aerial) control lead
(blue) or accessory power supply lead (red) to the
power supply lead of a car’s antenna (aerial)
booster (only when your car has built-in FM/
MW/LW antenna (aerial) in the rear/side glass).
t Check the connection of the car antenna (aerial).
t If the auto antenna (aerial) will not go up, check
the connection of the power antenna (aerial)
control lead.
Preset tuning is not possible.
• Store the correct frequency in the memory.
• The broadcast signal is too weak.
Automatic tuning is not possible.
• Setting of the local seek mode is not correct.
t Tuning stops too frequently:
Set “LOCAL-ON” (page 11).
t Tuning does not stop at a station:
Set “LOCAL-OFF” (page 11).
• The broadcast signal is too weak.
t Perform manual tuning.
During FM reception, the “ST” indication
flashes.
• Tune in the frequency accurately.
• The broadcast signal is too weak.
t Set “MONO-ON” (page 11).
An FM program broadcast in stereo is heard in
monaural.
The unit is in monaural reception mode.
t Set “MONO-OFF” (page 11).
RDS
The SEEK starts after a few seconds of
listening.
The station is non-TP or has weak signal.
t Deactivate TA (page 9).
No traffic announcements.
• Activate TA (page 9).
• The station does not broadcast any traffic
announcements despite being TP.
t Tune in another station.
PTY displays “- - - - - - - -.”
• The current station is not an RDS station.
• RDS data has not been received.
• The station does not specify the program type.
Program service name flashes.
There is no alternative frequency for the current
station.
t Press (SEEK) +/– while the program service name
is flashing. “PI SEEK” appears and the unit starts
searching for another frequency with the same PI
(Program Identification) data.
… 16 …


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