OKI B721dn Error Codes list and solutions – Compatible Printer model: OKI B721dn – OKI B721dn Error Code description: Code: 042, 043, 045 Description: Flash File System Error Failed access to Flash set directly on PU/CU board. Troubleshooting Guides: Run forced initialization of Flash.(Note that NIC- F/W and Mac address is deleted.After the initialization,it is […]