Sony MEX-M72BT Operating Instructions Manual page 33

Echo or noise occurs in phone call
conversations.
 Lower the volume.
 Set EC/NC Mode to [EC/NC-1] or [EC/NC-2]
(page 20).
 If the ambient noise other than the phone
call sound is loud, try reducing this noise.
E.g.: If a window is open and outside
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 boat 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 24).
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.
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 boat
speakers during handsfree call.
 If the sound is output from the cellular
phone, set the cellular phone to output
the sound from the boat 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.
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