300FRONT PANEL CONTROLS 7ENGLISHFront Panel Controls Main Information Display1 Power On/Off (Standby)2 Open/Close3 USB On-The-Go Input4 Headphone Jack5 Volume Control Main Information Display: This displaydelivers messages and status indications to helpyou operate the HS 300 Controller.1 Power On/Off (Standby): Press the buttononce to turn the HS 300 Controller on, press itagain to put the unit in the Standby mode.Note that when the HS 300 Controller isswitched on, the Power Indicator around thebutton turns blue.2 Open/Close: Press this button to open orclose the Disc Tray.3 USB On-The-Go Input: This input may beused to temporarily connect a USB thumb deviceor portable hard disk for direct playback ofaudio, image of video files or a USB hub. TheUSB inputs are designed to power a single USBdevice at a time. If additional hard disks areconnected through a hub it is necessary thatadditional external power supplies are used topower the hub and hard disks.4 Headphone Jack: This jack may be used tolisten to the system's output through a pair ofheadphones. Be certain that the headphoneshave a standard 3.5 mm stereo phone plug.Note that the main room speakers will automati-cally be turned off when the headphone jack isin use.5 Volume Control: Turn this knob clockwiseto increase the volume, counterclockwise todecrease the volume. If the system is muted,adjusting volume control will automaticallyrelease the unit from the silenced condition.