Epson Stylus Pro 7800 User Manual page 82

Current Status
EPSON Status Monitor 3 provides you with detailed printer
status information, a graphic display, and status messages. If the
ink runs low or out, or the maintenance tank becomes full, the
How to button appears in the EPSON Status Monitor 3 window.
Click How to to display instructions on how to replace the
cartridge or the maintenance tank.
Information
EPSON Status Monitor 3 provides a graphic display of the
remaining amount of ink and the free space of the maintenance
tank.
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Printing with Windows