Radio Reception; Usb Playback - Sony CDX-GT40U Mode D'emploi

During playback or reception,
demonstration mode starts.
 If no operation is performed for 5 minutes
with "DEMO-ON" set, demonstration mode
starts.
– Set "DEMO-OFF" (page 15).
The display disappears from/does not
appear in the display window.
 The dimmer is set to "DIM-ON" (page 15).
 The display disappears if you press and hold
.
– Press  on the unit until the
display appears.
 The connectors are dirty (page 18).
The Auto Off function does not operate.
 The unit is turned on. The Auto Off function
activates after turning off the unit.
– Turn off the unit.

Radio reception

The stations cannot be received.
The sound is hampered by noises.
 The connection is not correct.
– 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 radio antenna (aerial) in the
rear/side glass).
– Check the connection of the car antenna
(aerial).
– 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.
 The broadcast signal is too weak.
– Perform manual tuning.
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.
20
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 play back.
 Defective or dirty disc.
 The CD-Rs/CD-RWs are not for audio use
(page 17).
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.
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 SCR" is set to "OFF."
– Set "A.SCRL-ON" (page 15).
– Press and hold  (SCRL).
The sound skips.
 Installation is not correct.
– Install the unit at an angle of less than 45° in
a sturdy part of the car.
 Defective or dirty disc.

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.
– Reconnect it.