TCL 8111 Series User Manual page 29

Note
After powering on your Sound Bar, if there is no
operation performed on either the Sound Bar
or remote control within 10 seconds, all LED indicators
on the Sound Bar will turn off and light up again when
the operation is resumed.
Tip
You can use more advanced functions on the remote
control (see 'Overview of the remote control' on page
14).
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