Sony CDX-M850MP User Manual

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The playback order of the MP3 files
The playback order of the folders and files is as 
follows:
Notes
• A folder that does not include an MP3 file is skipped.
• When you insert a disc with many trees, it takes a 
longer time to start playback. We recommend that 
you make only one or two trees for each disc.
• Maximum folder number: 150 (including root folder 
and empty folders)
• The maximum number of MP3 files and folders that 
can be contained in a disc: 300
When a file/folder name contains many characters, 
this number may become less than 300.
• The maximum number of trees which can be played 
is 8.
Tip
To specify a desired playback order, before the folder 
or file name, input the order by number (e.g., “01,” 
“02”), then record contents onto a disc. (The order 
differs depending on the writing software.)
Getting Started
Resetting the unit
Before operating the unit for the first time, or 
after replacing the car battery or changing the 
connections, you must reset the unit.
Press the RESET button with a pointed object, 
such as a ballpoint pen.
Resetting the unit during use in sub-
display position
Notes
• After resetting the unit in the closed position, be sure 
to press 
(OPEN)
 on the unit once before operating 
further. If a disc is in the unit, the disc will be ejected 
automatically. Insert the disc again.
• Pressing the RESET button will erase the clock 
setting and some stored contents.
• After resetting the unit, press 
(OPEN/CLOSE)
 on the 
card remote commander to make sure the front 
panel  opens and closes correctly once before 
operating further.
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Folder (album)
MP3 file (track)
Tree 1
(root)
Tree 2
Tree 4
Tree 5
Tree 3
RESET button
RESET button