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9. To approximately recover the original factory boresight, position the three setscrews flush with
the front face of the lens mount plate and in contact with the inner lens mount plate.
This may require adjusting both setscrews and adjustment screws.
10. If further action is required, repeat steps 2 to 9.
11. Lock the setscrews, and re-check the boresight quality.
Tighten the setscrews to 2.1 Nm (18 in-lb) to ensure they do not shift.
Mechanically adjusting DMD convergence
A convergence problem can be identified when one or more projected colors (red, green, and blue)
appears misaligned when examined with a convergence test pattern.
The three colors should overlap to form pure white lines throughout the image and one or more poorly
converged individual colors may appear adjacent to some or all of the lines.
When adjusting the convergence, you are adjusting red and green to blue.
If you wear glasses with corrective lenses when performing this adjustment, make sure you are viewing
the test pattern on a straight angle through the optical axis of your glasses and not from a tilted or
angled perspective. This avoids a prismatic effect that can appear to shift convergence when viewing at
an angle.
1. Before adjusting DMD convergence, make sure the projector has reached a steady operational
state.
If switching from a white or bright test pattern to a dark convergence test pattern or if
warming up the projector after a shutdown, allow 15 minutes for stabilization so the optics can
reach a steady state.
2. Make sure the electronic convergence (ECC) is defaulted before doing mechanical convergence.
3. In the right toolbar, select Test Patterns.
4. Select RGB-2K-Convergence and display it full screen.
5. Open the Service door on the side of the projector.
6. To adjust the convergence knobs, use the 3 mm driver included with the projector.
Cinema 2K-RGB Installation and Setup Guide–CP2415-RGB and CP2420-RGB
020-103259-01 Rev. 1 (10-2022)
Copyright
©
2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Adjusting the image
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