Here are some solutions to fix the error code 51 on Brother printers. Generaly, it's a problem of the purge unit. Solution 1: The encoder strip may be dirty. Clean it with a soft chloth. Solution 2: Verify that the ink aborber felt is in good place. If necessary lightly press it. Solution 3 : a part is defective Maintenance Unit Engine Motor Internal power Mainboard
Reset printers and cartridge. Printers problem solving,tips, tricks and tutorial.