Automec cnc99

Automec no longer supports the CNC99 so hoping to get some help on here.

Have an older CNC99 that suffered a fault during a power outage. Was able to repair the onboard power supply and replace the driver for the LED display, but I have no output from the unit and none of the output LED's are lit. Does anyone have any board diagrams or unit troubleshooting that they would share? The program itself is on an EEPROM so that should be safe, and the on-board battery is good and fully charged. Obviously there is a problem on the output card or the processor but at this point I need dwgs.

Thanks