Epson EMP-TW1000 Service Manual page 33

Optical system drive block
The Lamp Unit, Light Guide Unit, POP Unit, and Projection Lens together make
C H E C K
P O I N T
up the Optical Engine. These components are assembled and adjusted together at
the factory, and are not available as separate service parts.
Do not subject the optical system components to physical shocks or strong
C A U T I O N
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.
Component Name
Lamp Unit An UHE-170W discharge lamp is the light source.
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
Light Guide Unit
UV filter removes any harmful ultraviolet light from the LCD. After this
light is polarized, it is then split into 3 spectrums (R, G and B).
The intensity of the distributed components of the RGB light is controlled
Light Bulbs
by means of the light valve.
The prism unit integrates the red, green and blue light and sends it
Prism Unit
through the projection lens.
The projection lens focuses the light composed by the prism and projects
Projection Lens
an image on the screen.
When the color mode is set to the Natural, Theater, Theater black 1,
Cinema Filter
Theater black 2, the cinema filter changes the luminance level to low.
SEIKO EPSON
EMP-TW1000
Figure 2-5. Optical Engine Functional Diagram
Table 2-1.
2-6
Function/Other
Revision:A