Summary This page is for the PRO-1 with firmware version 2.000 or later. Check your PRO-1 firmware version while referring to [ How to upgrade the firmware
Ink Tank Cover Doors Will not Open If the power light on the printer is not lit steady, or if the error indicator light is on or flashing, then the Tank Cover Open button may not function. Wait for the power light to become steady or clear the error and try again.
Disconnect the USB Cable button (L) on the printer to clear the error , then select Next If the serial number doesn't display on the registration screen, input the number found inside the printer.