Sony WX-920BT Mode D'emploi page 26

The talker's voice cannot be heard.
 The front speakers are not connected to the unit.
 Connect the front speakers to the unit. The
talker's voice is output only from the front
speakers.
A call partner says that the volume is too low or
high.
 Adjust the volume accordingly using mic gain
adjustment (page 15).
Echo or noise occurs in phone call conversations.
 Lower the volume.
 Set EC/NC Mode to [EC/NC-1] or [EC/NC-2]
(page 15).
 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 an 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 CALL.
 Connect from the phone.
The phone sound quality is poor.
 Phone sound quality depends on reception
conditions of cellular phone.
 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.
 Adjust the volume of the connected audio
device or this unit (page 19).
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 during use.
 Several BLUETOOTH devices or other devices
which emit radio waves are in use nearby.
 Turn off the other devices.
 Increase 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.
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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.
Pairing failed due to a timeout.
 Depending on the connecting device, the time
limit for pairing may be short.
 Try completing the pairing within the time.
Cannot pair.
 The unit may not be able to pair with a previously
paired BLUETOOTH device after initializing the
unit if the pairing information of the unit is on the
BLUETOOTH device. In this case, delete the
pairing information of the unit from the
BLUETOOTH device, and then pair them again.
BLUETOOTH function cannot operate.
 Turn off the unit by pressing OFF for more than
2 seconds, then turn the unit on again.
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.
Siri Eyes Free is not activated.
 Perform the handsfree registration for an iPhone
that supports Siri Eyes Free.
 Set the Siri function on the iPhone to on.
 Cancel the BLUETOOTH connection with the
iPhone and the unit, and reconnect.