Hey! Did you also witness all the LEDs lit up on your main board?
Hello,
I am currently going through the same issue as you had back in 2021. All LED's lit up, pendant tries to load the os and ends up in a black screen, cannot access boot monitor and if F1 is pressed I get the same japanese letters screen.
Did you ever found out what the issue was? On my side, Fanuc support is pointing towards a hardware issue (Mainboard or CPU card/DRAM)