Sega FORD RACING TWIN-FULL BLOWN, Service Manual

Page: 78 / 111

73
21. UGCI BOARD
•
If the UGCI BD or the USB connection to the UGCI BD fail during game the game will
end and the SEGA logo will appear on screen with the error “I/O FAULT”. If this
occurs, switch off the machine and replace the faulty item.
UGCI BD
The UGCI BD is an Input interface which controls ALL inputs to the CPU. The inputs controlled by this
interface are:
1. START buttons
2. VIEW buttons
3. GEAR SHIFT
4. ACCEL device
5. BRAKE device
6. STEERING controller
7. CREDIT input
All inputs listed above are directed to the UGCI BD. The UGCI BD communicates with the CPU via a single
USB.
•
The CREDIT button is not interfaced to the UGCI BD but is controlled via the VTS bd.
When the CREDIT button is pressed a signal is detected at the VTS BD and a
CREDIT is released to the UGCI BD which in-turn sends a signal to the CPU via
USB.