1.REPLACE DRUM

2.Clean the drum unit

3.Lines across the page

4.The message "[file name] can't be opened because it is from an unidentified developer." appears on OS X v10.8.x.

5.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-[error code]) when trying to scan a document directly into my E-mail application using ControlCenter4 or the SCAN key on my Brother machine.