Sony MDR-AS700BT - Manual (Page 106)

Help Guide
BLUETOOTH connection
Pairing cannot be done.
Bring the headset and the BLUETOOTH device closer together.
Cannot make a BLUETOOTH connection.
Check that the headset is turned on.
Check that the BLUETOOTH device is turned on and the BLUETOOTH
function is on.
Connection with the BLUETOOTH device may not be memorized on the
headset. Make a BLUETOOTH connection from the BLUETOOTH device to
the headset soon after pairing is complete.
The headset or the BLUETOOTH device is in sleep mode.
The BLUETOOTH connection is terminated. Make the BLUETOOTH
connection again.
Distorted sound
Make sure that the headset is not receiving interference from a wireless LAN,
other 2.4 GHz wireless device, or microwave oven.
The correspondence distance is short. (Sound skips.)
If a device that generates electromagnetic radiation, such as a wireless LAN,
other BLUETOOTH device(s), or a microwave oven is nearby, move the
headset away from such sources.
Point the antenna of the headset towards the BLUETOOTH device. Make sure
no obstacles blocks the communication.
The headset does not operate properly.
Reset the headset. Pairing information is not deleted by this operation.
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