Sony CDX GT420U Operating Instructions - Page 14

• Before playing, clean the discs with a commercially available cleaning cloth. Wipe each disc from the center out. Do not use solvents such as benzine, thinner, commercially available cleaners, or antistatic spray intended for analog discs. Notes on CD-R/CD-RW discs • Some CD-Rs/CD-RWs (depending on the equipment used for its recording or the condition of the disc) may not play on this unit. • You cannot play a CD-R/a CD-RW that is not finalized. • The unit is compatible with the ISO 9660 level 1/ level 2 format, Joliet/Romeo in the expansion format, and Multi Session. • The maximum number of: - folders (albums): 150 (including root and empty folders). - files (tracks) and folders contained in a disc: 300 (if a folder/file names contain many characters, this number may become less than 300). - displayable characters for a folder/file name is 32 (Joliet), or 64 (Romeo). • When the disc is recorded in Multi Session, only the first track of the first session format is recognized and played (any other format is skipped). The priority of the format is CD-DA and MP3/WMA/AAC. - When the first track is a CD-DA, only CD-DA of the first session is played. - When the first track is not a CD-DA, the MP3/ WMA/AAC session is played. If the disc has no data in any of these formats, "NO MUSIC" is displayed. Music discs encoded with copyright protection technologies This product is designed to play back discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protection technologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and may not be playable by this product. Note on DualDiscs A DualDisc is a two sided disc product which mates DVD recorded material on one side with digital audio material on the other side. However, since the audio material side does not conform to the Compact Disc (CD) standard, playback on this product is not guaranteed. 14 About USB devices • Mass Storage Class and ATRAC Audio Device type USB devices compliant with the USB standard can be used. However, this unit cannot recognize USB devices via a USB HUB. For details on the compatibility of your USB device, visit the Sony support website (page 19). • Corresponding codec is different according to device type. - Mass Storage Class: MP3/WMA/AAC - ATRAC Audio Device: ATRAC/MP3/WMA/ AAC • DRM (Digital Rights Management) files other than ATRAC may not be played. • The maximum number of displayable data is as follows. Mass Storage Class: - folders (albums): 128, files (tracks) per folder: 500 ATRAC Audio Device: ATRAC/MP3/WMA/AAC - albums/artists/playlists/genres: 65,535, tracks: 65,535 Notes • When using a cable, use the one supplied with the USB device to connect. • Do not use a USB device that is so large or heavy it may interfere with driving operations. • Do not leave a USB device in a parked car, as malfunction may result. • It may take time for playback to begin, depending on the amount of recorded data. • Backup of data in a USB device is recommended. Playback order of MP3/WMA/AAC files (CD-R/RW or Mass Storage Class) MP3/WMA/AAC Folder (album) MP3/WMA/ AAC file (track) About MP3 files • MP3, which stands for MPEG-1 Audio Layer-3, is a music file compression format standard. It compresses audio CD data to approximately 1/10 of its original size. • ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to MP3 only. ID3 tag is 15/30 characters (1.0 and 1.1), or 63/126 characters (2.2, 2.3 and 2.4).