Sony MEX-BT3850U Operating Instructions Manual page 37

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 play back.
• Defective or dirty disc.
• The CD-Rs/CD-RWs are not for audio use (page 31).
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.
• "A.SCRL" is set to "OFF."
t Set "A.SCRL-ON" (page 29).
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.
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 24).
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 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.
• 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 the Bluetooth audio is played back, 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.
continue to next page t
(handsfree).
37