MFC-J3520 FAQs & Troubleshooting MFC-J3520 Not your product? Sort by: Updated Date Popularity 3 Results 1. 26.03.2015 Improve poor print quality. 2. 24.07.2013 Clean the paper pick-up rollers 3. 18.06.2010 How do I clean the Scanner to improve the copy or fax quality? Cleaning FAQs & Troubleshooting