Good morning, I am working on an Epson s60600. Replaced printhead #2 for missing black, cleanings wasn’t helping any. Machine was working ok besides missing nozzles. Followed all step with service tool and service manual, purged lines with cleaning solution, decompress pressure, Shutdown and unplug. After replacing on boot up I am constantly getting plug in powercord message. I have tried resetting cables no change. Any help or suggestions would greatly be appreciated. Thank you