Usb Playback - Sony MEX-BT3900U Bedienungsanleitung

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.
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.
• Defective or dirty disc.
• The CD-Rs/CD-RWs are not for audio use (page 32).
MP3/WMA/AAC files cannot be played.
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 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."
t Set "A.SCRL-ON" (page 30).
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 items via a USB hub.
This unit cannot recognize USB devices via a USB
hub.
Cannot play items.
A USB device does not work.
t Reconnect it.
The USB device takes longer to play.
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.
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The sound is intermittent.
The sound may be intermittent at a high-bit-rate of
more than 320 kbps.
Bluetooth function
The connecting device cannot detect this unit.
• Before the pairing is made, set this unit to pairing
standby mode.
• While connected to a Bluetooth device, this unit
cannot be detected from another device. Disconnect
the current connection and search for this unit from
another device.
• When the device pairing is made, set the Bluetooth
signal output to on (page 23).
Connection is not possible.
• Connect to this unit from a Bluetooth device or vice
versa. The connection is controlled from one side
(this unit or Bluetooth device), but not both.
• Check the pairing and connection procedures in the
manual of the other device, etc., and perform the
operation again.
The name of the detected device does not
appear.
Depending on the status of the other device, it may not
be possible to obtain the name.
No ringtone.
• Adjust the volume in "VOL RING" level.
• Depending on the connecting device, the ringtone
may not be sent properly.
t Set "RINGTONE" to "R.TONE-1" (page 24).
The talker's voice volume is low.
Adjust the volume level.
A call partner says that the volume is too low
or high.
Adjust the volume accordingly using Mic Gain
adjustment (page 25).
Echo or noise occurs in phone call
conversations.
• Lower the volume.
• Set EC/NC Mode to "EC/NC-1" or "EC/NC-2"
(page 25).
• If the ambient noise other than the phone call sound
is loud, try reducing this noise.
E.g.: If a window is open and road noise, etc., is loud,
shut the window. If the air conditioner is loud, lower
the air conditioner.
The phone is not connected.
When Bluetooth audio is played, the phone is not
connected even if you press
t Connect from the phone.
The phone sound quality is poor.
Phone sound quality depends on reception conditions
of cellular phone.
t Move your car to a place where you can enhance
the cellular phone's signal if the reception is poor.
(handsfree).