1Press SLEEP repeatedly until [OFF] (off) is displayed.

1Press SLEEP repeatedly until [OFF] (off) is displayed.

»When the sleep timer is deactivated, »When the sleep timer is deactivated,  disappears on the display.Adjust display brightnessManual background disappears on the display.

Adjust display brightness

1Press REPEAT ALARM/BRIGHTNESS CONTROL repeatedly to select different levels of display brightness.

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Philips AJ3551 user manual Adjust display brightness, Press SLEEP repeatedly until OFF off is displayed