FAX-2940 FAQs & Troubleshooting FAX-2940 Not your product? Sort by: Updated Date Popularity 4 Results 1. 11/03/2016 Clean the corona wire 2. 08/05/2013 Clean the scanner to improve the copy or fax quality. 3. 12/09/2012 Clean the drum unit 4. 11/09/2012 Clean the paper pick-up roller. More FAQs Cleaning FAQs & Troubleshooting