Once the printer shuts down completely, click on the computer screen.
While the dedicated Epson SX230 adjustment program is the most direct method, there are alternative utilities if you encounter issues:
Epson printers do not have physical sensors to check how full these pads actually are. Instead, the printer relies on an internal electronic counter (the Waste Ink Pad Counter). Every printing and cleaning cycle adds points to this counter.
Finding and downloading this software requires caution. It's not an official Epson product available for public download, so you must rely on third-party sites.