Sony MEX-BT31PW Manual

13

• MSC (Mass Storage Class)-type USB 

devices (such as a USB flash drive, digital 
media player, Android phone) compliant 
with the USB standard can be used.
Depending on the digital media player or 
Android phone, setting the USB 
connection mode to MSC is required.

• Backup of data to a USB device is 

recommended.

• Connect the USB device after starting the 

engine.
Depending on the USB device, malfunction or 
damage may occur if it is connected before 
starting the engine.

• Corresponding codec is MP3 (.mp3), WMA 

(.wma), AAC (.m4a) and AAC (.mp4).

• For details on the compatibility of your USB 

device, visit the support site on the back cover.

Playback starts.

If a USB device is already connected, to start 
playback, press 

 repeatedly 

until “USB” appears.

To stop playback, press and hold 
 for 1 second.

To remove the USB device, stop the USB 
playback, then remove the USB device.

• Do not use USB devices so large or heavy that 

they may fall down due to vibration, or cause a 
loose connection.

• Do not detach the front panel during playback 

of the USB device, otherwise USB data may be 
damaged.

Changing display items
Press 

.

Displayed items may differ depending on 
the USB device, recording format and 
settings.

• The maximum number of tracks is 10,000.
• It may take time for playback to begin, 

depending on the amount of recorded data.

• During playback or fast-forward/reverse of a 

VBR (Variable Bit Rate) MP3/WMA/AAC file, 
elapsed playing time may not display 
accurately.

• Playback of the following MP3/WMA/AAC 

files is not supported.
– lossless compression files
– copyright-protected  files
– DRM (Digital Rights Management) files
– Multi-channel  audio  files