QL-820NWB FAQs & Troubleshooting QL-820NWB Not your product? Sort by Updated Date Popularity 3 Results 1. 12.04.2023 Where can I find my Brother printer's serial number? 2. 09.03.2020 Labels are jammed in the machine or are not ejected correctly after printing. 3. 26.06.2017 The power button does not light up. Machine FAQs & Troubleshooting