The Sega large display have their own processor board. If you do not get 5vdc on the display board connector, you get this reboot screen.
Here is a link which indicates the steps you can follow to fix yout problem. Go to the display section, 192x64.
I had this problem on the batman forever and replaced the capacitors and BRs to get the 5vdc. Also there is a wiring kit from Marco pinball which gives an alternate direct connection to the display board. You can start with it.