Troubleshooting 
89
B
Copying Difficulties
Difficulty Suggestions
Vertical black lines or streaks 
appear in copies.
Black vertical lines on copies are typically caused by dirt or correction fluid on the 
glass strip. Clean the glass strip, scanner glass, white bar and white plastic above 
them. (See Cleaning the scanner glass on page 56.)
Poor copy results when using the 
ADF.
Try using the scanner glass. (See Using the scanner glass on page 21.)
Fit to Page does not work correctly. Make sure your source document is not skewed. 
Reposition the document and try again.
Scanning Difficulties
Difficulty Suggestions
TWAIN or WIA errors appear when 
starting to scan. (Windows
®
)
Make sure the Brother TWAIN/WIA driver is chosen as the primary source. In 
Presto! PageManager with OCR, click File, Select Source and choose the 
Brother TWAIN/WIA driver.
TWAIN or ICA errors appear when 
starting to scan. (Macintosh)
Make sure the Brother TWAIN driver is chosen as the primary source. 
In PageManager, click File, Select Source and choose the Brother TWAIN driver. 
You can also scan documents using the ICA Scanner Driver.
(See Software and Network User’s Guide.)
OCR does not work. Try increasing the scanner resolution.
(Macintosh)
Presto! PageManager must be downloaded and installed before use. 
For more information, see Accessing Brother Support (Macintosh) on page 5.
Poor scanning results when using 
the ADF.
 Vertical black lines appear in 
the scanned data.
Clean the white bar in the ADF and the glass strip underneath it.
(See Cleaning the scanner glass on page 56.)
Try using the scanner glass. (See Using the scanner glass on page 21.)
Software Difficulties
Difficulty Suggestions
Cannot install software or print.
(Windows
®
) 
Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software.
“Device Busy” Make sure the machine is not showing an error message on the LCD.