Your product and its software will let you know when
ink is low or expended, or when the maintenance box needs to be
replaced.
Note: When
using the Epson Universal Print Driver or PostScript (PS3) printer
software with the product
(WF-C5790), you
can check ink and maintenance box status by using the product
buttons or the utilities included with the standard Epson printer
software. To download the standard Epson printer software, visit
epson.com/support (U.S.), epson.ca/support
(Canada), or epson.com.jm/support (Caribbean) and select
your product.