Cleaning the print head, Checking the print quality, Cleaning the print head checking the print quality – Brother MFC-790CW User Manual
Page 182
166
Cleaning the print head
B
To maintain good print quality, the machine
will automatically clean the print head. You
can start the cleaning process manually if
there is a print quality problem.
Clean the print head and ink cartridges if you
get a horizontal line or blank text in the text or
graphics on your printed pages. You can
clean Black only, three colors at a time
(Cyan/Yellow/Magenta), or all four colors at
once.
Cleaning the print head consumes ink.
Cleaning too often uses ink unnecessarily.
CAUTION
DO NOT touch the print head. Touching the
print head may cause permanent damage
and may void the print head's warranty.
a
Press .
b
Press Cleaning.
c
Press Black, Color or All.
The machine cleans the print head.
When cleaning is finished, the machine
will go back to the Ready screen
automatically.
Note
If you clean the print head at least five
times and the print has not improved, try
installing a new Genuine Brother Brand
replacement cartridge for each problem
color. Try cleaning the print head again up
to five more times. If the print has not
improved call Brother Customer Service.
(See Brother numbers on page i.)
Checking the print quality
B
If faded or streaked colors and text appear on
your output, some of the nozzles may be
clogged. You can check this by printing the
Print Quality Check Sheet and looking at the
nozzle check pattern.
a
Press .
b
Press Test Print.
c
Press Print Quality.
d
Press Color Start.
The machine begins printing the Print
Quality Check Sheet.
e
Check the quality of the four color blocks
on the sheet.
f
The LCD asks you if the print quality is
OK.
Do one of the following:
If all lines are clear and visible, press
Yes
to finish the Print Quality check
and go to step j.
If you can see missing short lines as
shown below, press No to choose
No
.
g
The LCD asks you if the print quality is
OK for black and three colors.
Press Yes or No.
h
The LCD asks you if you want to start
cleaning.
Press Color Start.
The machine starts cleaning the print
head.
OK
Poor