Mute button, press this button to turn off the volume, press it again to turn on thevolume.AUXUse the AUX connection to connect an external audio source. Press AUX on themain unit or on the remote control to enter AUX mode. When AUX mode is active youcan only use the volume controls of the Lenco device all other functions need to beoperated from the device that send the signal to the Lenco device.Sleep timerThis feature will turn off the device after a preset amount of time (Up to 90 minutes).To activate the sleep timer mode press the button on the remote control repeatedlyuntil the desired time is reached. You can choose out of 15, 30, 45, 60 and 90minutes. Take note that the sleep timer doesn't turn off the external audio device.ResetIf the device does not respond to the control buttons anymore, press the reset buttonto reset the device. The reset clears the system memory so all settings will beerased.System settingsSetting the display backlight levelPress the dimmer button on the remote control to adjust the backlight intensity. Theintensity can be set low or high.Setting the clock1. Press the 12 / 24 hour button on the remote control to set the desired clockformat.2. Press the set clock button on the remote control to enter time set mode.3. Press the HR button on the remote control to set the hours.4. Press the MIN button on the remote control to set the minutes.TroubleshootingProblem AnswerUnit does not turn on Check if the adaptor is connected correctlyNo soundDid you select the right source (Bluetooth® of AUX)Is the external audio source set correct?Is the Bluetooth® device paired?Press mutePress volume +Remote control does not functionAre you within the operating area?In strong light (outdoor) the remote control may notwork properly.Maybe the battery is empty?Unit does not respond Reset the unit.