MFC-J6520DW FAQs & Troubleshooting MFC-J6520DW Not your product? Sort by: Updated Date Popularity 3 Results 1. 03/26/2015 Improve poor print quality. 2. 07/24/2013 Clean the paper pick-up rollers 3. 06/18/2010 How do I clean the Scanner to improve the copy or fax quality? Cleaning FAQs & Troubleshooting