Monitors the voltage level to trigger over-voltage protection if thresholds (typically around ) are exceeded. pdf.ic37.com Disabling Protection (Repair Context)
This indicates a thermal fault. A capacitor or resistor near the protection pin is heat-sensitive. As the board warms up, the component’s value drifts, raising the protection pin voltage. Use freeze spray to identify the faulty component. lx1692 protection pin
Monitors lamp current. If the signal is below a specific threshold (e.g., 0.3 cap V sub p k end-sub during strike), it may trigger open-lamp protection. OVSNS (Over Voltage Sense): the component’s value drifts