TJ-4420TN FAQs & Troubleshooting TJ-4420TN Not your product? Sort by Updated Date Popularity 3 Results 1. 03/15/2022 I can no longer print from my computer via Bluetooth®, even though I was able to print previously. 2. 07/15/2021 Switch between the wired network and Wi-Fi® network/Bluetooth® connection 3. 01/29/2021 Enable or disable Bluetooth Low Energy (BLE) Connecting to a Computer FAQs & Troubleshooting