HL-2700CN FAQs & Troubleshooting HL-2700CN Not your product? Sort by: Updated Date Popularity 2 Results 1. 26/08/2011 I heard a beep sound from the UPS (Uninterruptible Power Supply) when I turned on my Brother machine. 2. 08/11/2005 Why does my Brother machine make a clunking noise when powered on or printing? Others FAQs & Troubleshooting