HL-3140CW FAQs & Troubleshooting HL-3140CW Not your product? Sort by: Updated Date Popularity 4 Results 1. 07/09/2015 Clean the corona wire (video instructions available) 2. 02/14/2013 Clean the LED head 3. 11/13/2012 Clean the paper pick-up roller 4. 11/13/2012 Clean the drum unit Cleaning FAQs & Troubleshooting