DS-640 FAQs & Troubleshooting DS-640 Not your product? Sort by: Updated Date Popularity 3 Results 1. 05/09/2023 When I set the Document Size setting to "Auto", the scanned image is missing, or areas are missing in the scanned data. 2. 05/09/2023 (Video) Calibrate Your Brother Machine 3. 20/12/2019 (Video) Clean the Scanner and Rollers More FAQs Video FAQs FAQs & Troubleshooting