MFC-990CW FAQs & Troubleshooting MFC-990CW Not your product? Sort by: Updated Date Popularity 4 Results 1. 11/16/2016 My machine does regular cleaning cycles in the night. How can I correct this? 2. 01/20/2011 Cleaning the print head. 3. 06/18/2010 How do I clean the Scanner to improve the copy or fax quality? 4. 06/07/2010 How do I clean the cordless handset? Cleaning FAQs & Troubleshooting