JVC KD-ABT22 Manuel D'instructions page 39

• Some CD-Rs or CD-RWs may not play back on this
unit because of their disc characteristics, or for the
following reasons:
– Discs are dirty or scratched.
– Moisture condensation has occurred on the lens
inside the unit.
– The pickup lens inside the unit is dirty.
– The files on the CD-R/CD-RW are written using the
"Packet Write" method.
– There are improper recording conditions (missing
data, etc.) or media conditions (stained, scratched,
warped, etc.).
• CD-RWs may require a longer readout time since the
reflectance of CD-RWs is lower than that of regular
CDs.
• Do not use the following CD-Rs or CD-RWs:
– Discs with stickers, labels, or a protective seal stuck
to the surface.
– Discs on which labels can be directly printed by an
ink jet printer.
Using these discs under high temperature or high
humidity may cause malfunctions or damage to the
unit.
Playing an MP3/WMA/AAC disc
• This unit can play back MP3/WMA/AAC files with
the extension code <.mp3>, <.wma>, or <.m4a>
(regardless of the letter case—upper/lower).
• This unit can show the names of albums, artists
(performer), and Tag (Version 1.0, 1.1, 2.2, 2.3, or
2.4) for MP3 files and show WMA/AAC Tag.
• This unit can display only one-byte characters. No
other characters can be correctly displayed.
• This unit can play back MP3/WMA/AAC files meeting
the conditions below:
MP3:
– Bit rate: 8 kbps — 320 kbps
– Sampling frequency:
48 kHz, 44.1 kHz, 32 kHz, 24 kHz, 22.05 kHz,
16 kHz, 12 kHz, 11.025 kHz, 8 kHz
WMA:
– Bit rate: 32 kbps — 192 kbps
– Sampling frequency:
48 kHz, 44.1 kHz, 32 kHz
AAC:
– Bit rate: 16 kbps — 320 kbps
– Sampling frequency:
48 kHz, 44.1 kHz
Disc format: ISO 9660 Level 1/Level 2, Romeo, Joliet,
Windows long file name
• The maximum number of characters for file/folder
names vary depending on the disc format used
(includes 4 extension characters—<.mp3>,
<.wma>, or <.m4a>).
– ISO 9660 Level 1: up to 12 characters
– ISO 9660 Level 2: up to 31 characters
– Romeo *: up to 128 characters
– Joliet *: up to 64 characters
– Windows long file name *: up to 128 characters
* The parenthetic figure is the maximum number of
characters for file/folder names in case the total
number of files and folders is 271 or more.
• This unit can recognize a total of 512 files,
200 folders, and 8 hierarchical levels.
• This unit can play back files recorded in VBR (variable
bit rate).
Files recorded in VBR have a discrepancy in the
elapsed time display, and do not show the actual
elapsed time. In particular, this difference becomes
noticeable after performing the search function.
• This unit cannot play back the following files:
– MP3 files encoded in MP3i and MP3 PRO format.
– MP3 files encoded in an inappropriate format.
– MP3 files encoded with Layer 1/2.
– WMA files encoded in lossless, professional, and
voice format.
– WMA files which are not based upon Windows
Media ® Audio.
– WMA files copy-protected with DRM.
– Files which have data such as AIFF, ATRAC3, etc.
• The search function works but search speed is not
constant.
Continued on the next page
REFERENCES 39