OKI ES3451 Error Codes list and solutions – Compatible Printer model: OKI ES3451 – OKI ES3451 Error Code description: Code: 001 Display: Inspection is required. 001 : Error Description: Machine Check Exception A hardware error was detected (board failure or insufficient power supply capacity). Troubleshooting Guides: Replace the CU/ PU board. Code: 002, 006, 009, […]