How To Improve Print Quality; Cleaning The Print Head; Print Quality Check - Brother MFC-3420C User Manual

How to improve print quality

Cleaning the print head

To ensure good print quality, the machine will regularly clean the
print head. You can start the cleaning process when needed.
Clean the print head and ink cartridges if you get a horizontal line in
the text or graphics on your printed pages. You can clean two colors
at a time (Black/Cyan, Yellow/Magenta), or all four colors at once.
Cleaning the print head consumes ink. Cleaning too often uses ink
unnecessarily.
WARNING
Do NOT clean the print head by touching it with your hand or a
cloth.
1
Ink
Press .
2
Press
Menu/Set
Press
3
Press
Menu/Set
Press
The MFC will clean the print head. When cleaning is finished,
the MFC will go back standby mode automatically.
If you clean the print head at least five times and the print has
not improved, call Brother your dealer for service.

Print quality check

If the print quality is not good, you can print a Print Quality Check
Sheet to help you find the settings you may need to change.
1
For MFC-3420C, press
For MFC-3820CN, press
2
Color Start
Press
The MFC begins printing the Print Quality Check Sheet.
3
Check the sheet to see if the quality and alignment are OK by
following STEPs A and B.
TROUBLESHOOTING AND ROUTINE MAINTENANCE 13 - 11
or to select Cleaning .
.
or to select the color you want to clean.
.
Menu/Set
Menu/Set
.
4
, .
6.
,