JVC 250 User Manual

Chapter 5---Electronics
5-6 Model 250 Service Manual
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 non-standby supply voltages are working.
/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.

JVC 250 Specifications

General

Brand	JVC
Model	250
Category	Projector
Language	English