FAX-2840 FAQs & Troubleshooting FAX-2840 Not your product? Sort by: Updated Date Popularity 4 Results 1. 20.11.2018 Clean the corona wire 2. 06.08.2012 Clean the drum unit 3. 03.08.2012 Clean the paper pick-up roller. 4. 21.06.2012 Clean the scanner to improve the copy or fax quality. Cleaning FAQs & Troubleshooting