Sony MHC-V73D Help Manual page 167

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MHC-V73D
Transferring results in an error.
The USB device is not formatted correctly. Refer to the operating instructions of the USB device on how to format.
Turn off the system and remove the USB device. If the USB device has a power switch, turn the USB device off and
on again after removing it from the system. Then, perform the transfer again.
If the transfer and erase operations are repeated multiple times, the file structure within the USB device becomes
fragmented. Refer to the operating instructions of the USB device on how to deal with this problem.
The USB device was disconnected or the power was turned off during transfer. Delete the partially-transferred file,
and perform the transfer again. If this does not fix the problem, the USB device may be broken. Refer to the
operating instructions of the USB device on how to deal with this problem.
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