OKI B720 Error Codes list and solutions – Compatible Printer model: OKI B720 – OKI B720 Error Code description: Code: 1-5 Description: Cassette Fail – Paper size is not specified. Troubleshooting Guides: FIP1.13: Possible causative parts: GUIDE TRAY LEFT 150 PAPER CASSETTE HVPS/MCU 550 PAPER CASSETTE 1 Does Error occur with Tray 3 or Tray […]