44About optional unitOthersAbout optional unitConnecting portable audioplayers to the AUX jackUse a commonly available accessory cable withthe RCA connector to connect a portable audioplayer to the AUX (auxiliary) jack of this system.The default setting for AUX is OFF.The AUX mode is activated.For details, refer to "Switching AudioModes" on page 14.ATTENTION• While the AUX mode is activated, actionssuch as turning off the audio player orpulling out the connection cord may causenoise spikes that can damage the systemspeakers. Be sure to avoid this possibilityby turning off system power or switchingfrom AUX mode to another mode beforeshutting off or disconnecting the portableaudio player.• Audio output levels will differ for the variousdevices that can be connected by thismethod. Carefully adjust volume until theoutput level of the connected player isknown.• Before using a portable audio player in avehicle, read the player's operation manualcarefully and confirm problem-freeoperation in the vehicle before proceeding.Switching the AUX mode on and offThe function mode is activated.The AUX ON/OFF mode is activated.It switches between ON and OFF eachtime the button is turned.The selected settings will take effect.11 Turn on the portable audio playerand start its play function.11 Press the [FUNCTION] button.2 Press the [SELECT] button toselect the AUX ON/OFF.3 Turn the [VOL] button to select theON/OFF mode.