HL-3040CN FAQs & Troubleshooting HL-3040CN Not your product? Sort by: Updated Date Popularity 4 Results 1. 17/09/2014 Clean the paper pick-up roller 2. 22/08/2013 How do I clean the Drum Unit? 3. 22/08/2013 How can I clean the corona wire of the drum unit? 4. 29/07/2009 How do I clean the LED head? More FAQs Cleaning FAQs & Troubleshooting