OKI ES6405 Error Codes list and solutions – Compatible Printer model: OKI ES6405 – OKI ES6405 Error Code description: Code: – Display: WDT ERROR R14=xxxx Description: PU firmware runaway Troubleshooting Guides: Does this error recur? Yes Turn on the power again. Replace the CU/ PU board. Code: – Display: COMMUNICATION ERROR Description: I/F error between […]