🟢 Green – breathing

Normal operation – board healthy

🔵 Blue

No coil data received from the pinball CPU (data-link timeout)

⚪ White

Blanking active – the machine is holding the coil outputs off (e.g. during reset or start-up)

🟠 Orange – all blinking

Over-voltage warning on the 5 V or 12 V supply

🟠 Orange – steady, one end blinking

Under-voltage warning – left-most LED blinks = 5 V low, right-most LED blinks = 12 V low

🟣 Purple

Over-temperature

🔴 Red

Fault – coil drive disabled