Brother DCP-7055 User Manual

Troubleshooting

If you think there is a problem with your machine, check the chart below and follow the 
troubleshooting tips.

Most problems can be easily resolved by yourself. If you need additional help, the Brother 
Solutions Center offers the latest FAQs and troubleshooting tips.

Visit us at http://solutions.brother.com/.

Check the chart below and follow the troubleshooting tips.

Vertical black line appears in 
copies.

Black vertical lines on copies are typically caused by dirt or correction fluid on the 
glass strip, or the corona wire is dirty. (See Cleaning the scanner glass on page 41 
and Cleaning the corona wire on page 42.)

Copies are blank.

Make sure you are loading the document correctly. (See Using the scanner glass 
on page 19.)

Poor print quality

See Improving the print quality on page 64.

No printout.



Check that the machine is plugged in and the power switch is turned on.



Check that the toner cartridge and drum unit are installed correctly. (See 
Replacing the drum unit on page 35.)



Check the interface cable connection on both the machine and your computer. 
(See the Quick Setup Guide.)



Check that the correct printer driver has been installed and chosen.



Check to see if the LCD is showing an error message. (See Error and 
maintenance messages on page 49.)



Check the machine is online:
(Windows

®

7 and Windows Server

®

2008 R2) Click the Start button and 

Devices and Printers. Right-click Brother DCP-XXXX Printer. Make sure 
that Use Printer Offline is unchecked.
(Windows Vista

®

) Click the Start button, Control Panel, Hardware and 

Sound, and then Printers. Right-click Brother DCP-XXXX Printer. Make 
sure that Use Printer Offline is unchecked.
(Windows

®

XP and Windows Server

®

2003/2008) Click the Start button and 

choose Printers and Faxes. Right-click Brother DCP-XXXX Printer. Make 
sure that Use Printer Offline is unchecked.
(Windows

®

2000) Click the Start button and choose Settings and then 

Printers. Right-click Brother DCP-XXXX Printer. Make sure that Use Printer 
Offline is unchecked.