auna iTuner 320 BT Manual page 49

Backlight
1. During System settings mode, press the / buttons to select Backlight
and then press the SELECT button to confirm.
2. For the other settings under Backlight, press the / buttons to select the
following options and then press the SELECT button to confirm.
Operation Mode
Standby Mode
Slumber Mode
High / Medium/ Low
Timeout Off/ 10 sec / 30 sec / 60 sec
Standby Level High / Medium
High / Medium/ Low / Off.
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