Brother DCP-8025D - Manual (Page 147)

9 - 7 USING THE BROTHER CONTROL CENTER
Perform an operation from the Control Center
screen
If you see this screen it means you left-clicked a button in the Control
Center window without first placing a document in the ADF.
Place the document in the DCP’s ADF, and then click OK to go to the
Control Center screen.
If you want to scan the document from the scanner glass, please
use
Scan on the control panel of the DCP.