Pages are black when viewing the scanned documents in my Android™ mobile device using Brother Image Viewer application.

The scanned data is attached to an E-mail application which I do not use regularly, or the error message indicating no default E-mail application is registered on my computer (CC4-121-xxxxxxxx) when trying to scan a document directly into my E-mail application using ControlCenter4 or the SCAN key on my Brother machine.

I cannot find the destination computer on the network when I try to scan a document using the machine's Scan key or control panel.

When I scan a document using ControlCenter, the scanned file size is too big.