RJ-4040 FAQs & Troubleshooting RJ-4040 Not your product? Sort by Updated Date Popularity 4 Results 1. 18.10.2023 Printing is not possible. (USB connection) 2. 22.10.2020 A communication error occurs when printing via serial cable (RS-232C). 3. 21.05.2020 I have an occasional printing problem. 4. 12.11.2012 Suddenly my print server stopped printing. Connecting to a Computer FAQs & Troubleshooting