About Mp3 Files; About Wma Files; Maintenance - Sony CDX-M20 Mode D'emploi

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).
• When naming an MP3 file, be sure to add the
file extension ".mp3" to the file name.
• During playback or fast-forward/reverse of a
VBR (Variable Bit Rate) MP3 file, elapsed
playing time may not display accurately.
Note
If you play a high-bit-rate MP3, such as 320 kbps,
sound may be intermittent.

About WMA files

• WMA, which stands for Windows Media
Audio, is a music file compression format
standard. It compresses audio CD data to
approximately 1/22* of its original size.
• WMA tag is 63 characters.
• When naming a WMA file, be sure to add
the file extension ".wma" to the file name.
• During playback or fast-forward/reverse of a
VBR (Variable Bit Rate) WMA file, elapsed
playing time may not display accurately.
* only for 64 kbps
Note
Playback of the following WMA files is not
supported.
– lossless compression
– copyright-protected
If you have any questions or problems
concerning your unit that are not covered in
this manual, consult your nearest Sony dealer.
18

Maintenance

Replacing the lithium battery of the
remote commander
When the battery becomes weak, the range
of the remote commander becomes shorter.
Replace the battery with a new CR2025
lithium battery. Use of any other battery
may present a risk of fire or explosion.
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Notes on the lithium battery
• Keep the lithium battery out of the reach of
children. Should the battery be swallowed,
immediately consult a doctor.
• Wipe the battery with a dry cloth to assure a
good contact.
• Be sure to observe the correct polarity when
installing the battery.
• Do not hold the battery with metallic tweezers,
otherwise a short-circuit may occur.
WARNING
Battery may explode if mistreated.
Do not recharge, disassemble, or dispose
of in fire.
Cleaning the connectors
The unit may not function properly if the
connectors between the unit and the front
panel are not clean. In order to prevent this,
detach the front panel (page 7) and clean the
connectors with a cotton swab. Do not apply
too much force. Otherwise, the connectors
may be damaged.
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