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Cooling is affected by removing the filter and fan pack assembly. If the procedure takes
longer than an hour, watch for over-temperature alerts. Cool-down periods with the shutter
closed and cover on may be required.
2. Using the 2.5 mm drivers, adjust the twist and vertical screws (screws 1 and 2 in the image)
for the red and green formatters.
The vertical adjustment and twist adjustment screws interact with each other.
•
Turning one screw in the opposite direction of the other, affects the twist adjustment.
•
Turning both screws equal amounts in the same direction, moves the images vertically.
Adjusting one screw at a time may cause binding and make it more difficult to achieve the
required adjustment. Do not force the adjustment, the board should move easily with gentle
pressure. Excessive force might cause the convergence adjustment to become misaligned
once you remove the adjustment tool.
The longer convergence tool interferes with the laminar airflow device (LAD) fan assembly
when trying to adjust the red. An allen key with a ball end is provided for access to the red
adjustments.
3. Using the 2.5 mm driver, adjust the horizontal screw for the red and green formatters.
4. Optionally, remove the light engine air filter and fan pack to access the blue convergence
adjustment screws and adjust the lines following steps 2 and 3.
5. Review the alignment changes to ensure the convergence is satisfactory (on page 29) and
repeat steps 2 to 4 as necessary.
Related information
Projector components (on page 8)
Image convergence assessment criteria
Use the following criteria to determine when the alignment changes are satisfactory.
The best possible convergence is:
•
The center area should be perfectly aligned showing solid white pixels.
•
Green and blue images should always be perfectly aligned to each other (to within 1/4 pixel
total in all directions).
•
The red image should be evenly 1/4 to 1/2 a pixel out around the outer area, showing cyan
(green + blue) towards the center of the screen.
The red image is slightly larger than the blue and green. The larger size is caused by the
natural properties of red light due to a slow wavelength compared to blue light and green light.
The angle that light travels is affected by every medium it travels through; in this case several
pieces of glass are between red and the screen.
Roadie 4K35 and 4K45 Service Manual
020-101694-03 Rev. 1 (01-2016)
Copyright
2016 Christie Digital Systems USA Inc. All rights reserved.
©
Service setups
29
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