HL-4070CDW FAQs & Troubleshooting HL-4070CDW Not your product? Sort by: Updated Date Popularity 2 Results 1. 16/11/2015 I heard a beep sound from the UPS (Uninterruptible Power Supply) when I turned on my Brother machine. 2. 25/09/2008 My Brother machine has no power. More FAQs Others FAQs & Troubleshooting