Brother DCP-J562DW Online User's Manual page 529

IMPORTANT
DO NOT touch the print head. Touching the print head may cause permanent damage and may void the print
head's warranty.
When a print head nozzle is clogged, the printed sample looks like this.
After the print head nozzle is cleaned, the horizontal lines are gone.
MFC-J680DW/MFC-J880DW
1. Press [Ink] > [Improve Print Quality] > [Check Print Quality].
You can also press
Print Quality].
2. Press [Start].
The machine prints the Print Quality Check Sheet.
3. Check the quality of the four colour blocks on the sheet.
4. The Touchscreen asks about the print quality. Do one of the following:
• If all lines are clear and visible, press [No], and then press
• If lines are missing (see Poor, below), press [Yes].
OK
Poor
5. The Touchscreen asks you to check the print quality of each colour. Press the number of the pattern (1–4)
that most closely matches the printing result.
6. Do one of the following:
• If print head cleaning is needed, press [Start] to start the cleaning procedure.
[Settings] > [Maintenance] > [Improve Print Quality] > [Check
to finish the Print Quality check.
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