https://vocus.cc/salon/696f5de1fd89780001fc294b
Hardware Architecture Overview: Epson Error 0x93 is a fatal "Power Supply Unit (PSU) Circuit Error." Technically, this signifies that the Mainboard is receiving unstable voltage from the PSU. If the voltage drops below the threshold required to fire the Piezo-Electric printhead elements, the DC Controller logs a 0x93 error. This is a critical safety lockout designed to prevent the Power Transistors on the motherboard from burning out due to current fluctuation.