OKI B721/B731/MPS5501 Printer – Important Information Update
OKI | How do I find and resolve Toner Sensor Errors?
Led Head Cannot Be Recognized. (Error Code 131, 132, 133, 134); Service Call 131 To 134 (Led Head Missing); Toner Cartridge Cannot Be Recognized. ( Error Code 540, 541, 542, 543); Error Caused