QL-820NWB/820NWBc FAQs & Troubleshooting QL-820NWB/820NWBc Not your product? Sort by Updated Date Popularity 3 Results 1. 04/12/2023 Where can I find my Brother printer's serial number? 2. 03/09/2020 Labels are jammed in the machine or are not ejected correctly after printing. 3. 06/26/2017 The power button does not light up. Machine FAQs & Troubleshooting