User Manual

33
A
A
How to clean and
check the machine
A
Cleaning the scanner A
a Unplug the machine from the AC power
outlet.
b Lift the document cover (1). Clean the
scanner glass (2) and the white
plastic (3) with a soft lint-free cloth
moistened with a non-flammable glass
cleaner.
c (MFC-J4420DW)
In the ADF unit, clean the white bar (1)
and the glass strip (2) with a lint-free
cloth moistened with a non-flammable
glass cleaner.
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. Check this by printing the
Print Quality Check Sheet and looking at the
nozzle check pattern.
a Press .
NOTE
You can also press (Settings) and
then press Maintenance.
b Press a or b to display
Improve Print Quality.
c Press Improve Print Quality.
d Press Check Print Quality.
e Following the instructions on the
Touchscreen, load Letter or A4 size
plain paper in the paper tray, and then
press Start. The machine prints the
Print Quality Check Sheet.
f Check the quality of the four color blocks
on the sheet.
Routine maintenance A
2
1
3
2
1