MFC-8370DN FAQs & Troubleshooting MFC-8370DN Not your product? Sort by: Updated Date Popularity 4 Results 1. 15/11/2011 How do I clean the scanner to improve the copy or fax quality? 2. 28/01/2009 How do I clean the drum unit? 3. 28/01/2009 How do I clean the laser scanner window? 4. 28/01/2009 How do I clean the corona wire? Cleaning FAQs & Troubleshooting