Boss Audio 550B User Manual - Page 9

DISC/USB/CARD OPERATION Insert Disc/USB/SD ‡ To play on a disc, insert a disc with the label surface up into the disc slot. Playback will begin automatically. ‡ To play on a USB/SD device, open the USB port cover and insert the USB/SD storage device into the USB/SD port. Playback will begin automatically. Label Surface Up Eject Disc/USB/SD ‡ To eject a disc, press the button to stop playback. Press the (eject) button to eject the disc and then remove it. ‡ To eject a USB device or SD card, press the button to stop playback, then remove the storage device or card. Play/Pause Press the (play/pause) button to pause or resume playback. Next/Previous Track ‡ To play the next track, ‡ To play the previous track, press the or NEXT button. press the or PREV button. Fast Forward/Backward ‡ To fast forward, press and hold the or NEXT button. ‡ To fast backward, press and hold the or PREV button. Introduction Scan Press the INT button to play the first 10 seconds of each track, press again to stop the introduction scan and play the current track. Repeat the Same Track Press the RPT button to toggle between RPT ALL (Play all track), RPT FLR (Continuously repeats alltracks in current folder) and RPT ONE (Continuously repeats current track). Playing all tracks in random Press the RDM button to play all tracks in random order, press again to cancel this function. 7