DCP-1616NW FAQs & Troubleshooting DCP-1616NW Not your product? Sort by: Updated Date Popularity 3 Results 1. 08/04/2013 Clean the Drum Unit. 2. 08/04/2013 Clean the scanner to improve the copy or fax quality. 3. 08/04/2013 Clean the corona wire of the drum unit. Cleaning FAQs & Troubleshooting