Barco DP2K-12C, Service Manual

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8. Light processor assembly
blue light beams. The prism merges the three integrated light beams back in to one full color video image, which is projected via
the lens onto the screen.
Each DMD has its own formatting board which drives the micro mirrors to integrate the video signal into the light beam. A lot of heat
is produced during the integration of the video information. To protect the DMD’s for overheating the Light Processor is equipped
with fans and heat sinks. Each channel has its own fan and heat sink.
The red and green channel are equipped with three extended adjustment knobs to convergence the DMD with the DMD of the blue
channel which is the reference channel for convergence alignment.
The air gab between the prism and DMD is sealed to protect the DMD’s for dust. It is important to know that a misaligned light path
which re
fl ects upon the sealing will damage the sealing very rapidly. At the bottom of the prism exit a “touch” sensor is mounted
to protect the prism against accidental lens movements. Note that the Light Processor Unit is equipped with a motorized shutter
(dowser) in front of the prism exit.
6
2
1
3
5
4
Image 8-3
Light processor
1 Formatting board blue channel
2 Formatting board green channel
3 Convergence adjustment knob
4 Cooling block green channel
5 Cooling block red channel
6 Prism exit
R5905043 DP2K-12C/11CX 19/02/2018 137