A troubleshooting, If you are having difficulty with your machine, Troubleshooting – Brother MFC-J6720DW User Manual

MFC-L8850CDW, MFC-J870DW, DCP-J152W, MFC-9340CDW, MFC-J4410DW, MFC-J6920DW, MFC-J650DW, MFC-J4510DW, HL-L8350CDWT, HL-3140CW, MFC-J285DW, MFC-J875DW, MFC-J4610DW, MFC-J4710DW, MFC-J475DW, MFC-9130CW, HL-L8250CDN, MFC-L8600CDW, MFC-J450DW, HL-3170CDW, MFC-J6520DW, MFC-J4310DW, MFC-9330CDW, HL-L9200CDWT, HL-L8350CDW, MFC-J470DW