Sony CDX-GT250S, Operating Instructions Manual

Page: 14 / 48

14
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. If everything is in order, check
the fuse.
• If the unit is turned off and the display disappears, it
cannot be operated with the remote commander.
t Turn on the unit.
The power aerial does not extend.
The power aerial does not have a relay box.
No sound.
• The volume is too low.
• The ATT function is activated.
• The position of the fader control “FAD” is not set for
a 2-speaker system.
No beep sound.
• The beep sound is cancelled (page 9).
• An optional power amplifier is connected and you are
not using the built-in amplifier.
The contents of the memory have been erased.
• The RESET button has been pressed.
t
Store again into the memory.
• The power connecting lead or battery has been
disconnected.
• The power connecting lead is not connected properly.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the position of the ignition
key is switched.
The leads are not matched correctly with the car’s
accessory power connector.
The display disappears from/does not appear
in the display window.
• The dimmer is set “DIM-ON” (page 9).
• The display disappears if you press and hold
(OFF)
.
t
Press and hold
(OFF)
on the unit until the
display appears.
• The connectors are dirty (page 12).
CD playback
The disc cannot be loaded.
• Another disc is already loaded.
• The disc has been forcibly inserted upside down or in
the wrong way.
The disc does not playback.
• Defective or dirty disc.
• The CD-Rs/CD-RWs are not for audio use (page 11).
MP3/WMA files cannot be played back.
The disc is incompatible with the MP3/WMA format
and version (page 11).
MP3/WMA files take longer to play back than
others.
The following discs take a longer time to start
playback.
– a disc recorded with a complicated tree structure.
– a disc recorded in Multi Session.
– a disc to which data can be added.
The ATRAC CD cannot play.
• The disc is not created by authorized software, such
as SonicStage or SonicStage Simple Burner.
• Tracks that are not included in the group cannot be
played.
The display items do not scroll.
• For discs with very many characters, those may not
scroll.
• “A.SCRL” is set to “OFF”.
t Set “A.SCRL-ON” (page 9) or press (SCRL) .
The sound skips.
• Installation is not correct.
t Install the unit at an angle of less than 45° in a
sturdy part of the car.
• Defective or dirty disc.
The operation buttons do not function.
The disc will not eject.
Press the RESET button (page 4).
Radio reception
The stations cannot be received.
The sound is hampered by noises.
• Connect a power aerial control lead (blue) or
accessory power supply lead (red) to the power
supply lead of a car’s aerial booster (only when your
car has built-in FM/AM aerial in the rear/side glass).
• Check the connection of the car aerial.
• The auto aerial will not go up.
t
Check the connection of the power aerial control
lead.
• Check the frequency.
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:
Press
(SENS)
until “LOCAL-ON” appears.
t
Tuning does not stop at a station:
Press
(SENS)
repeatedly until “MONO-ON” or
“MONO-OFF” (FM), or “LOCAL-OFF” (AM)
appears.
• 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 Press
(SENS)
to set the monaural reception
mode to “MONO-ON.”
An FM programme broadcast in stereo is heard
in monaural.
The unit is in monaural reception mode.
t
Press
(SENS)
until “MONO-OFF” appears.