Epson RS-353, Руководство по обслуживанию

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2 . 1
The hardware of LCP is distinguished in the optical system and the electrical system.
The lower level beyond the breaking line in the Figure shows the optical system, and
the upper level shows the electrical system.
Power supply
MAIN BOARD
UNIT
Generate the Light Valve
Generates DC
voltage
for the electric
circuit.
Generates DC
voltage
fo
the Light Source.
R/G/B memory and the drive
signal.
Conduct setting of the initial
operation of circuit and
control the interface.
Conduct the internal control
(Sensor, Fan, Speaker,
Remote Controller)
D e t e c t t h e
EXHAUST FAN

2
IRS232 /remote
LAMP HOUSING
LIGHT VALVE
PRISM LENS UNIT
Focus/Zoom
- t - c o m p o s i t e
LIGHT VALVE
BLOCK Divide the
light Into 3
by
Lens, filter, and Mirror
Note: Cooling fan cools the light valves
of R/G/B (LCD panel)
Note:
Exhaust fan exhausts mainly the
heated air around the light source.
(Projection process outline)
Figure

signal is provided in digital or analog from a computer through the interface
board (Analog signal should be once changed into digital signal by the main board.)
signal (digital) is once stored in the video memory on the main board then the
driver board generates signals to drive the light valves R/G/B.
light valves R/G/B are individual panels each others. They work to shut or
transmit the lights from the light valve block.
lights transmitted through the light valves will be combined the prism and
projected through the lens unit.
2-l