Brother DCP-L8400CDN Basic User's Manual page 133

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.
Colour misregistration
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Uneven density appears
periodically across the page
W X Y Z
A
B
C
D
E
Missing thin lines in images
Recommendation
 Make sure the machine is on a solid level surface.
 Perform the colour registration using the Touchscreen
(see Colour Registration on page 94).
 Put in a new drum unit (see Replacing the drum unit
on page 57).
 Put in a new belt unit (see Replacing the belt unit
on page 63).
 Perform the calibration using the Touchscreen or the printer
driver (see Colour Calibration on page 93).
 Adjust the copy density and contrast if you are copying
(see Advanced User's Guide).
 Clear the Improve Gray Color check box in the printer
driver. (See Software and Network User's Guide.)
 Identify the colour causing the problem and put in a new
toner cartridge (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).
 Make sure Toner Save mode is off in the Touchscreen or the
printer driver (see Software and Network User's Guide).
 Change the print resolution.
Troubleshooting
125
B