TJ-4420TN FAQs & Troubleshooting TJ-4420TN Not your product? Sort by Updated Date Popularity 2 Results 1. 09/02/2022 I cannot connect my machine to the wireless network. 2. 07/15/2021 Switch between the wired network and Wi-Fi® network/Bluetooth® connection Connecting to a Computer FAQs & Troubleshooting