Select Maintenance on the printer's control panel.
Print Head Nozzle Check:
Select this feature to check if the print head nozzles are clogged. The printer prints a nozzle check pattern.
Print Head Cleaning:
Select this feature to clean clogged nozzles in the print head.
Power Ink Flushing:
The Power Ink Flushing utility allows you to replace all of the ink inside the ink tubes.
Print Head Alignment:
Vertical Alignment:
Select this feature if your printouts look blurry or text and lines are misaligned.
Horizontal Alignment:
Select this feature if horizontal banding appears at regular intervals in your printouts.
Fill Ink:
Select this feature to reset the ink level to 100% when filling the ink tank.
Ink Level Setting:
Select this feature to set the ink level according to the actual ink remaining.
Remaining capacity of Maintenance box:
Displays the approximate service life of the maintenance box. When is displayed, the maintenance box is nearly full. When is displayed, the maintenance box is full.
Paper Guide Cleaning:
Select this feature if there are ink stains on the internal rollers. The printer feeds paper to clean the internal rollers.
is displayed, the maintenance box is nearly full. When 
is displayed, the maintenance box is full.