How do I perform a power flush on my Epson L3250 to clear black ink clogs?

Access the printer's maintenance menu (usually through the printer driver or the printer's control panel). Look for 'Power Flush' or 'Deep Cleaning'. Select the black ink cartridge and initiate the power flush. This process uses a significant amount of ink, so ensure your tanks have sufficient ink before proceeding. Follow the on-screen instructions carefully.