The solution is the Adjustment Program (commonly called a Resetter). This guide explains exactly what it is, how to use it safely, and how to get your Epson 1390 working again.
Once you have the program downloaded and extracted (using a password like epson or adjprog if required), follow these steps precisely.
: Allows users to read, write, or initialize the printer's EEPROM settings, which is useful for mainboard repairs or backups.
Are you currently seeing a or a flashing light pattern ?