Brother MFC-3420C User Manual page 159

STEP A: Color block quality check
The LCD shows:
4
Check the quality of the four color
blocks on the sheet. (Black/Cyan/Yellow/Magenta).
5
If all lines are clear and visible, press
—OR—
If you can see missing short lines as shown below, press
The LCD will ask you if the print
quality is OK for each color.
6
2
Press ( No ) for any color with a
problem.
The LCD shows:
1
Press ( Yes ). The MFC will start
cleaning the colors.
7
After cleaning is finished, press
The MFC will start printing the Print Quality Check Sheet again
and then return to STEP A.
8
If STEP A is OK, press
13 - 12 TROUBLESHOOTING AND ROUTINE MAINTENANCE
OK
1
to proceed to STEP B.
Is Step "A" OK?
1.Yes 2.No
1
( Yes ) to go to STEP B.
Poor
Black OK?
1.Yes 2.No
Start Cleaning?
1.Yes 2.No
Black Start
2
( No ).
Color Start
or .