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Qls QA390 - System Protection and Power Management

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6.10 Volume protection
Set volume protection, means adjustable max volume value, advise set one volume
protection value according to headphone setting, avoid unexpected adjust be too big volume
6.11 Automatically Off-screen
Set the time to automatically turn off the LCD screen, turn off the display to save power, and
improve the sound quality. After turning off, press the confirmation button of the main unit
or remote control to light up again
6.12 Automatically power off
Set the automatic power off time, can set automatically power off after 30, 60, 90 and 120
minutes, valid after press setting key withdraw
6.13 Pause power off time
Set automatic power off when 15 or 30 minutes after pause play, default close
6.14 Remote control power on/off
If you do not use the remote control, it is recommended to set it to off to avoid photoelectric
interference in the space
6.15 Factory Settings Reset
Under the setting menu, 2s long time setting key then loose, select confirm can recover
leave factory setting, at the same time, clear the received songs in the favorite