RJ-4030 FAQs & Troubleshooting RJ-4030 Not your product? Sort by Updated Date Popularity 2 Results 1. 26/11/2020 What do the indicator lights mean? 2. 20/10/2020 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? Error Messages/LED Indications FAQs & Troubleshooting