HL-3170CDW FAQs & Troubleshooting HL-3170CDW Not your product? Sort by: Updated Date Popularity 4 Results 1. 09/07/2015 Clean the corona wire (video instructions available) 2. 14/02/2013 Clean the LED head 3. 13/11/2012 Clean the paper pick-up roller 4. 13/11/2012 Clean the drum unit Cleaning FAQs & Troubleshooting