Brother MFC-3420C User Manual page 160

STEP B: Alignment Check
The LCD shows:
9
Check the 600 dpi and 1200 dpi test
prints to see if number 5 most closely matches number 0. If the
number 5 sample of both the 600 dpi and 1200 dpi are the best
matches, press
—OR—
If another test print number is a better match for either 600 dpi
or 1200 dpi, press
10
For 600 dpi, press the number of the
test print that most closely matches
the number 0 sample (1-8).
11
For 1200 dpi, press the number of
the test print that most closely
matches the number 0 sample
(1-8).
12
Repeat Steps 1 and 2 (in Print Quality Check) to print another
sample Print Quality Check Sheet and then check it.
13
Stop/Exit
Press
When an ink head nozzle is
clogged the printed sample
looks like this.
13 - 14 TROUBLESHOOTING AND ROUTINE MAINTENANCE
1
( Yes ) to finish STEP B.
2
( No ) to select it.
.
Is Step "B" OK?
1.Yes 2.No
600dpi Adjust
Select Best #
1200dpi Adjust
Select Best #
After the ink head nozzle is
cleaned, the horizontal lines
are gone.