MFC-8840D FAQs & Troubleshooting MFC-8840D Not your product? Sort by: Updated Date Popularity 5 Results 1. 19.12.2022 Can I use non-Brother or third party supplies with the Brother machine? 2. 25.03.2016 What is the difference between the toner cartridge and the drum unit? 3. 19.03.2012 Replace the drum unit. 4. 19.03.2012 Replace the toner cartridge. 5. 10.03.2009 Can I buy any MICR toner? Consumables / Paper / Accessories FAQs & Troubleshooting