Epson PowerLite 5000, Service Manual

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EPSON PowerLite 5000 Service Manual
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the driver circuit for the light valves.
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Timing signals output from the display controller are converted into signals for the light
valves (LCDs) by the D/A converter and LCCOM circuit before they are output.
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The filter/gate circuit is designed to reduce noise influence on the display driver circuit.
To reduce impulse noise, input signals are sent through the three-level filter circuit. To
reduce the effects of timing delays on the logic, gate circuits work as trigger circuits for
each signal line (R/G/B) and unify the output timing.
•
The flash ROM contains electrical correction data for the image display. The display
controller reads the correction data. The controller uses the correction data for display
timing generation, brightness / contrast / chroma and density control.
•
Light valve driver circuits convert the input analog signals to the LCD (Liquid Crystal
Display) driver signals.