Sony HT-A7000 Help Manual page 127

Help Guide
Sound Bar
HT-A7000
The USB device is not recognized.
Try the following:
1.
Turn the speaker system off.
2.
Remove and reconnect the USB device.
3.
Turn the speaker system on.
Make sure that the USB device is securely connected to the
Check to see if the USB device is damaged.
Make sure that the USB device is turned on.
If the USB device is connected via a USB hub or cable, disconnect it and connect the USB device directly to the
speaker system.
When connecting a WALKMAN® or smartphone, its internal storage or external storage (such as a memory card)
may not be recognized.
5-024-835-11(2) Copyright 2021 Sony Corporation
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(USB) port.