Panasonic FP-D250 User Manual page 65

4) Exposure lamp ON/OFF control
(LPCNT1)
Main CPU PCB
Lamp inverter
control signal
When the lamp inverter control signal (LPCNT1) of the main CPU PCB is at "L"
level, the exposure lamp (Xenon lamp) is turned on at a high frequency by the
lamp inverter.
LPCNT1
(Lamp inverter
control signal)
2-28
Lamp inverter
OFF
ON
Exposure lamp
(Xenon lamp)