Sony SRS-BTM30 - Manual (Page 20)

20
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Initializing This Unit
You can reset this unit to its default and delete all pairing information.
1
If this unit is turned on, press and hold the 1 button to turn off this
unit.
2
While holding the 1 button, press the ID SET button for 7 seconds or
more.
The 1 indicator (green) and the indicator (blue) flash four times, and this unit is
reset to the default setting. All pairing information is deleted.