Sony CDX-GT650UI Operating Instructions Manual page 30

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/AM
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 25).
t Tuning does not stop at a station:
Set "LOCAL-OFF" (page 25).
• 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 25).
An FM program broadcast in stereo is heard in
monaural.
The unit is in monaural reception mode.
t Set "MONO-OFF" (page 25).
RDS
PTY displays "- - - - - - - -."
• The current station is not an RDS station.
• RDS data has not been received.
• The station does not specify the program type.
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 26).
MP3/WMA/AAC files cannot be played back.
The disc is incompatible with the MP3/WMA/AAC
format and version. For details on playable discs and
formats, visit the support site.
30
MP3/WMA/AAC 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 display items do not scroll.
• For discs with very many characters, those may not
scroll.
• "AUTO SCROLL" is set to "OFF."
t Set "A.SCRL-ON" (page 25).
t Press and hold (DSPL) (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 6).
USB playback
You cannot play back items via a USB hub.
This unit cannot recognize USB devices via a USB
hub.
Cannot play back items.
A USB device does not work.
t Reconnect it.
The USB device takes longer to play back.
The USB device contains files with a complicated tree
structure.
A beep sounds.
During playback, the USB device has been
disconnected.
t Before disconnecting a USB device, make sure to
stop playback first for data protection.
The sound is intermittent.
The sound may be intermittent at a high-bit-rate of
more than 320 kbps.