Brother MFC-J835DW - Manual (Page 79)

Routine maintenance
65
A
Cleaning the print head
A
To maintain good print quality, the machine
will automatically clean the print head when
needed. You can start the cleaning process
manually if there is a print quality problem.
Clean the print head if you get a horizontal
line in the text or graphics, or blank text on
your printed pages. You can clean Black only,
three colors at a time
(Yellow/Cyan/Magenta), or all four colors at
once.
Cleaning the print head consumes ink.
Cleaning too often uses ink unnecessarily.
IMPORTANT
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 Ready mode
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 ink 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
uu
page i.)
Checking the print quality
A
If faded or streaked colors and text appear on
your printouts, some of the print head 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.
g
The LCD asks you if the print quality is
OK for black and the 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