I am going on the basis that your cartridge did run dry even though you said it could have. If it did not let me know. The ink lines run inside the printer cover from the tanks to the print head. Lift up the cover and have a peak inside to try and follow their path.
If the cartridge ran dry you can see that in the actual cartridge. It would be harmful to your print head to run it without ink. Unfortunately, Epson leaves out maintenance routines such as Power Clean on these printers to prevent their customers from easily changing ink supplies. The only maintenance tools are available are what their technicians use.
One of our customers found a Mac utility - refer to: R3000-VLM-ran-ran-out-of-ink-and-cleaned-head-line-with-imac-routine
Otherwise the PC version is more commonly known as Epson Service Adjustment Utility and is also available from 2manuals.com. We publish an instructions on how to use this utility here. While you are not needing to flush your printer, etc., you do need to run the INTIAL INK CHARGE to get rid of the air in the Yellow channel.
Read through these and you should be able to solve this.