Epson XP-402-403-405-406 Error OxCF The Epson XP-402-403-405-406 printer may sometimes show Error code OxCF on its display, indicating various ink device errors that users may encounter. These errors can include ink cartridge failure, holder board assembly failure (related to the Cartridge Chip Information System or CSIC), main board failure, or cable or FFC (flexible flat…