Christie CP2420-Xe Service Manual page 23

The physical layout of the red and green formatter boards dictates the behavior of the twist and
vertical adjustments:
• The adjustment of the two is more like a twist with the left-side of the screen as a sliding hinge
point to allow vertical travel.
• The vertical adjustment screw and twist adjustment screw interact with each other so if one is
turned in the opposite direction of the other, the twist is affected.
• If both screws are turned equal amounts in the same direction, the image moves vertically.
If you wear glasses with corrective lenses when performing this adjustment, ensure 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. In the right toolbar, select Test Patterns.
3. Select the RGB-2K-Convergence test pattern and display it full screen.
4. Access the screws on the light engine.
CP2420-Xe and CP4420-Xe Service Guide
020-103566-02 Rev. 1 (07-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Service setups
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