Brother MFC-9120CN User Manual page 153

Examples of poor print
quality
All one color
Color misregistration
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Uneven density appears
periodically across the page
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Thin lines do not print
Recommendation
Identify the color causing the problem and put in a new drum unit.
(See Replacing the drum units on page 174.)
To identify the color of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.
Make sure that the machine is on a solid level surface.
Perform the auto color registration using the control panel (see Auto
Registration on page 165) or perform the manual color registration
using the control panel (see Manual Registration on page 165).
Identify the color causing the problem and put in a new drum unit.
(See Replacing the drum units on page 174.)
To identify the color of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.
Put in a new belt unit. (See Replacing the belt unit on page 178.)
Perform the calibration. (See Calibration on page 164.)
Adjust the contrast or brightness when you are in copy mode. (See
Adjusting Contrast, Color and Brightness on page 89.)
Identify the color that is uneven and put in a new toner cartridge for
that color. (See Replacing a Toner cartridge on page 168.)
To identify the color of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.
Identify the color that is uneven and put in a new drum unit. (See
Replacing the drum units on page 174.)
To identify the color of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.
Make sure Toner Save mode is off in the control panel of the machine
or the printer driver.
Change the print resolution.
®
If you use Windows
Printing or Improve Thin Line in Settings of Basic tab. (See
Settings Dialog in the Software User's Guide on the CD
Troubleshooting and routine maintenance
printer driver, choose Improve Pattern
C
-
ROM.)
137