Need to total reset my printer as it can print good in color but broken prints in black and whitetryed using the manual,resetting lumens,matching according to the manual but all did not work,changed the catridges nothing.i think have done lot of changes to the machine that the best will be to total reset the machine but how PLZ help
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I saw on this site codes for another MFC to clear memory and reset the cleaning unit count code to zero. It worked on two of my brother mfc 820cw units. The third mfc 5840cn had unable to print error message 46- nothing at Brother. they want you to take everything to a repair shop.they don't help at all. Then the error went to 4F when I tried toclear the memory.As Iunderstand that message- it means I have to replace the printer head. Have no clue where or what it is. But I can read a manual as well as anyone and follow directions to fix it! Can't be worse than it is now! Good luck
Your printer will keep using the color cartridges to keep the printing head working even if you don't print in color. If you need to print only in greyscale, buy a cheap HP printer (Printer only, not a PSC) and remove the color cartridge.