Sony HT-A9 Manual De Instrucciones página 58

Resetting the Speakers
1
Press and hold  (power) on the
bottom of the speaker for more
than 10 seconds.
The power indicator of the speaker
flashes slowly in red and resetting
starts.
The power indicator of the speaker
flashes in green and orange
alternately when resetting is
completed.
When resetting is completed,
disconnect the AC power cord
(mains lead), then connect the AC
power cord (mains lead) after the
power indicator turns off.
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