Chapter 5---Electronics
Figure 5-5 System Controller PCB I/O Diagram for other PCBs.
System Controller PCB - Inputs
/LV_OK - signal from the Low Voltage Power Supply; it tells the System Controller PCB that all the
/HV_OK - signal from the High Voltage Power Supply; it tells the System Controller PCB that all the high voltage supplies are working.
/LAMP_OK - signal from the Arc Lamp Power Supply.
/LAMP_LIT - signal from the Arc Lamp Power Supply; it tells the System Controller PCB that the Arc Lamp is lit.
ODD_FIELD - Square wave signal from the Raster Timing Generator PCB, with 50% duty cycle that is low during odd fields of an Interlace signal. This signal is high during noninterlaced signals.
Model 250 Service Manual |
