The Drum LED is still on or flashing after I replace the drum unit with a new one. | Brother
Brother HL 2140 Toner Life End Error Hack : 5 Steps - Instructables
Amazon.com: E-Z Ink (TM Compatible Drum Unit Replacement for Brother DR360 DR 360 to use with DCP-7040 DCP-7030 MFC-7840W MFC-7340 MFC-7440N HL-2140 HL-2170W HL-2150N (1 Drum Unit) : Office Products
Drum Unit for Brother HL 2140, 2170, MFC 7440N and 7840 Laser Printer