Brother DCP-9020CDN User Manual page 116

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
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 lines across the page
108
Recommendation

Wipe the scanner glass strip with a dry lint free soft cloth
(see Cleaning the scanner glass on page 70).

Clean all four corona wires (one for each colour) inside the
drum unit by sliding the green tab (see Cleaning the corona
wires on page 71).

Make sure the green tab of the corona wire is at the home
position (a)(1).

Replace the toner cartridge that matches the colour of the
streak or band (see Replacing the toner cartridges
on page 46).
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

The drum unit may be damaged. Install a new drum unit (see
Replacing the drum units on page 53.)
To identify the colour of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

Identify the colour causing the problem and replace the toner
cartridge that matches the colour of the line (see Replacing
the toner cartridges on page 46).
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

Identify the colour causing the problem and install a new
drum unit (see Replacing the drum units on page 53).
To identify the colour of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.
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