HL-2170W FAQs & Troubleshooting HL-2170W Not your product? Sort by: Updated Date Popularity 2 Results 1. 20.01.2014 My Printer starts warming up in Sleep mode. What can I do? 2. 26.08.2011 I heard a beep sound from the UPS (Uninterruptible Power Supply) when I turned on my Brother machine. Others FAQs & Troubleshooting