Using the RESET button
If the speaker cannot be turned on, or if it cannot be operated even when it is turned on, push the RESET button on the rear side with a pointed object, such as a pin. The speaker is reset and turns off.
After pushing the RESET button, turn on the speaker. If it does not turn on, consult your nearest Sony dealer.
Note
- To reset the speaker while it is being powered by the built-in battery, push and hold the RESET button until the (power) indicator turns off.