TD-4550DNWB FAQs & Troubleshooting TD-4550DNWB Not your product? Sort by Updated Date Popularity 2 Results 1. 04/03/2024 What do the indicator lights mean? 2. 22/10/2020 The WLAN icon appears on the LCD, but the printer cannot communicate with other devices via a wireless LAN. Error Messages/LED Indications FAQs & Troubleshooting