MFC-1815 FAQs & Troubleshooting MFC-1815 Not your product? Sort by: Updated Date Popularity 3 Results 1. 04/08/2013 Clean the Drum Unit. 2. 04/08/2013 Clean the scanner to improve the copy or fax quality. 3. 04/08/2013 Clean the corona wire of the drum unit. Cleaning FAQs & Troubleshooting