MFC-845CW FAQs & Troubleshooting MFC-845CW Not your product? Sort by: Updated Date Popularity 2 Results 1. 15/05/2013 How do I clear the message "Searching for Base Unit (Base Unit not detected)"? 2. 21/07/2010 Why do I hear an echo when I use the speaker phone on the cordless handset? Telephone FAQs & Troubleshooting