QL-600 FAQs & Troubleshooting QL-600 Not your product? Sort by Updated Date Popularity 3 Results 1. 02/29/2024 (Video) Small characters or thin lines are printed faintly. 2. 03/28/2022 I cannot print. 3. 08/03/2021 Small characters or thin lines are printed faintly. Printing FAQs & Troubleshooting