Once you have reset the old password using any method above, you must reconnect the printer to your network. Here is the standard WPS method (easiest for most routers):
He punched in the new Wi-Fi password, the printer’s green light turned solid, and the "Job Complete" chime echoed through the office. Minutes later, the deadline was met, and the L3150 went back to its quiet, ink-stained life. How To Reset Epson L3150 Printer Wifi Password