RJ-4030 FAQs & Troubleshooting RJ-4030 Not your product? Sort by Updated Date Popularity 2 Results 1. 26/03/2020 What do the indicator lights mean? 2. 10/10/2014 The power light is frequently blinking in orange indicating “Now Cooling”, or a data transmission error appears on my computer when printing continuously. What should I do? More FAQs (English only) Error Messages/LED Indications FAQs & Troubleshooting