OKI ES8431DM Error Codes list and solutions – Compatible Printer model: OKI ES8431DM – OKI ES8431DM Error Code description: Code: 001 Display: Service call 001: Error Description: Machine Check Exception hardware fault detection (board failure or poor power supply) Troubleshooting Guides: Replace the CU/ PU board. Code: 002 … 007 Display: Power Off/On 002: Error […]