Sony NW-A25 How To Use Manual page 211

Help Guide
The content such as music on your Walkman may be corrupted.
Connect the Walkman to a Windows computer and use Media Go or
Windows Explorer to delete the content in which the noise occurred
from the Walkman. If you use a Mac computer, use the Finder to delete
the corrupted content. After you have deleted the corrupted content,
transfer the content from the computer to the Walkman again. Do not
perform any other tasks on the computer while transferring content to
the Walkman. Doing so may cause the content to be corrupted.
If the plug is dirty, wipe it clean with a soft, dry cloth.
If your Walkman is connected to a Bluetooth audio device, check the
connection status.
[238] Troubleshooting
Volume cannot be turned up, or the volume
remains low when the playback volume is turned
up.
If the HOLD switch is in the HOLD position, slide it to the opposite
position.
If the AVLS (Volume Limit) setting is activated, deactivate it.
When listening on a Bluetooth audio device, turn up the volume control
of the Bluetooth audio device.
If the volume level cannot be adjusted directly on the Bluetooth audio
device, increase the volume on your Walkman.
[239] Troubleshooting
Sound can only be heard from one side of the
headphones.
Sound will not be output properly if the plug is not inserted correctly
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Q&A Sound
Q&A Sound
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08/06/16 16:25