Primera Disc Publisher II User Manual page 25

Enable Ink Low Warning
This setting lets you enable or disable the warning from the
printer to tell you when the ink cartridges are getting low.
Ink Levels and Cartridge Maintenance
Select this button to display the current ink levels as well as
options for cleaning and changing cartridges.
Select Clean button to send a simple test pattern to the printer.
Be sure to have a disc in the Disc Publisher's input bin and the
front cover closed. The test pattern, shown below, purges ink
through nozzles of your ink cartridge to clear any blockages.
The test pattern will show if the nozzles require any further
Creating Discs 21