HL-2240 FAQs & Troubleshooting HL-2240 Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/20/2012 Clean the corona wire of the drum unit. 2. 07/30/2010 Clean the paper pick-up roller. 3. 07/30/2010 Clean the Drum Unit. Cleaning FAQs & Troubleshooting