Brother DS-820W - Manual (Page 18)

Troubleshooting
A
Error Message Cause Action
Unknown error. The document failed to upload for
an undetermined reason.
This may also occur if Button
Manager V2 cannot establish a
connection with the network
server.
Check all network settings of the
Button Manager V2 to make sure
they are correct.
NOTE
If you are having trouble uploading files, make sure you can access the network file server using an Internet
browser. If the network file server is not working or there is a problem with the network connection between
your computer and the network file server, Button Manager V2 will not be able to upload files.
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