2-6
EMP-S4
SEIKO EPSON Revision:B
C H E C K
P O I N T
The Lamp Assy., Light Guide Unit, POP Unit, and Projection Lens together
make up the Optical Engine. These components are assembled and adjusted
together at the factory, and are not available as separate service parts.
note: The Lamp and Projection Lens can be enacted with AS parts.
C A U T I O N
Do not subject the optical system components to physical shocks or strong
vibration.
Do not disassemble the Light Guide Unit. Disassembly will cause color
distortion, even if reassembled very carefully.
The Optical Engine and MA Board are figured and adjusted together at the
factory. They are only available as a matched pair, and must always be
replaced together when either the Optical Engine or MA Board has a failure.
Table 2-1.
Component Name Function/Other
Lamp Assy. An 170W discharge lamp is the light source.
Light Guide Unit
The Light Guide Unit disperses the light from the light source via
lens arrays A and B in order to provide uniform illumination. In
addition, a UV filter protects the LCDs from harmful ultraviolet
light. After this light is polarized, it is then split into 3 spectrums
(R, G and B).
POP Unit and Projec-
tion lens
The Panel-on-Prism (POP) Unit, which incorporates the Light
Valves, controls the intensity of the distributed components of the
RGB light. The prism unit then integrates the RGB light and
sends it through the projection lens.
To Next Page
Loading...
