HL-1470N FAQs & Troubleshooting HL-1470N Not your product? Sort by: Updated Date Popularity 2 Results 1. 30/01/2014 How do I clean the corona wire on the drum unit? 2. 02/06/2009 How do I clean the inside of the printer and Drum Unit? More FAQs Cleaning FAQs & Troubleshooting