Users Manual - English
Page 174
... Paper Size on page 27.) (MFC-6490CW) Make sure the machine's Paper Size setting matches the size of paper in the tray. (See Paper Size and Type (MFC6490CW only) on page 27.) Also, check that is in the memory. Error Message Unable to Scan XX Unusable Device Disconnect device from front connector & turn the machine off and then on again. Wrong Paper Size...
... Paper Size on page 27.) (MFC-6490CW) Make sure the machine's Paper Size setting matches the size of paper in the tray. (See Paper Size and Type (MFC6490CW only) on page 27.) Also, check that is in the memory. Error Message Unable to Scan XX Unusable Device Disconnect device from front connector & turn the machine off and then on again. Wrong Paper Size...