Error Displays/Messages - Sony MEX-BT3750U Operating Instructions Manual
Bluetooth audio system
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- Operating instructions manual (60 pages) ,
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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 17).
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 18).
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
(handsfree).
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.
The volume of the connected audio device is
low (high).
Volume level will differ depending on the audio
device.
t Adjust the volume of the connected audio device or
this unit.
The sound skips during playback of a
Bluetooth audio device.
• Reduce the distance between the unit and the
Bluetooth audio device.
• If the Bluetooth audio device is stored in a case
which interrupts the signal, remove the audio device
from the case while using.
• Several Bluetooth devices or other devices which
emit radio waves are used nearby.
t Turn off the other devices.
t Reduce the distance from the other devices.
• The playback sound stops momentarily when the
connection between this unit and the cellular phone is
being made. This is not a malfunction.
The connected Bluetooth audio device cannot
be controlled.
Check that the connected Bluetooth audio device
supports AVRCP.
Some functions do not work.
Check if the connecting device supports the functions
in question.
A call is answered unintentionally.
The connecting phone is set to answer a call
automatically.
No sound is output from the car speakers
during handsfree call.
If the sound is output from the cellular phone, set the
cellular phone to output the sound from the car
speakers.
“OFF BT” appears when initializing.
Press and hold (BT) until “
” turns off. Then
initialize again (page 19).
The external microphone does not work.
The setting of the microphone is not correct.
t Set “MIC-EXT” (page 20).
Error displays/Messages
CHECKING
The unit is confirming the connection of a USB device.
t Wait until confirming the connection is finished.
1
ERROR*
2
• The disc is dirty or inserted upside down.*
t Clean or insert the disc correctly.
• A blank disc has been inserted.
• The disc cannot play due to a problem.
t Insert another disc.
• USB device was not automatically recognized.
t Reconnect it again.
• Press Z to remove the disc.
FAILURE
The connection of speakers/amplifiers is incorrect.
t See the installation guide manual of this model to
check the connection.
HUB NO SUPRT
USB hub is not supported on this unit.
LOAD
The CD changer is loading the disc.
t Wait until loading is complete.
L. SEEK +/–
The local seek mode is on during automatic tuning.
NO DEV (No Device)
(SOURCE) is selected without a USB device
connected. A USB device or a USB cable has been
disconnected during playback.
t Be sure to connect a USB device and USB cable.
NO DISC
The disc is not inserted in the CD changer.
t Insert discs in the CD changer.
continue to next page t
Page 29
- Quick Links:
- Notes on Bluetooth
- Pairing
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