Brother DCP-L8400CDN Basic User's Manual page 130

Examples of poor print quality
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Coloured streaks or bands down
the page
122
Recommendation
 Wipe the scanner glass strip with a dry lint free soft cloth
(see Cleaning the scanner glass on page 77).
 Clean all four corona wires (one for each colour) inside the
drum unit by sliding the blue tab (see Cleaning the corona
wires on page 82).
Make sure the blue tab of the corona wire is at the home

position (1).
 Replace the toner cartridge that matches the colour of the
streak or band (see Replacing the toner cartridges
on page 52).
To identify the colour of the toner cartridge, visit
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.
 Put in a new drum unit (see Replacing the drum unit
on page 57.)
1