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