How to Fix Machine Error 7E00 for DCP-T720DW?

My PC doesn't detect my Printer even using other PC. I tried to download their available software but to no avail since the printer cannot be detected. The first error occurred was FE00 and I tried all things on what is available on YT but it went to Err 7E00. It also appear sometimes an maintenance 4 when I try to replug.