Epson PX-V780 Error OxB1 Epson PX-V780 Error Code OxB1 Display on Printer: Description and Troubleshooting If you encounter the error code OxB1 displayed on your Epson PX-V780 printer, it indicates an issue related to ink device error, ink cartridge failure, holder board assembly failure, main board failure, or cable/FFC disconnection. In order to resolve this…