Adjusting The Los Coupling Mirrors - Christie Cinema 4K-RGB Service Manual

7. Use the Convergence test pattern to assist with adjusting the horizontal and vertical lines.
Horizontal adjustments are controlled by adjusting knob 3.
Vertical convergence and rotation are controlled by adjusting knobs 1 and 2. Christie
recommends rotating a single knob a maximum of a quarter rotation before adjusting the
second knob a quarter rotation. For example, if using one hand, turn the left knob a quarter
rotation and then the right knob a quarter rotation, and so on. Adjusting a single knob for
vertical or rotational adjustment to an extreme before adjusting the second knob may result in
the convergence mechanism binding.
For the best stability, Christie recommends setting convergence while rotating the knobs in a
clockwise direction. This may require first adjusting convergence by turning the knobs counter-
clockwise and finalizing the convergence with a clockwise approach. This applies to all knobs.
8. When complete, push in all the convergence adjustment knobs to disengage them.

Adjusting the LOS coupling mirrors

Learn how to adjust the Laser Optical Subsystem (LOS) coupling mirrors.
The LOS coupling mirrors can only be adjusted after replacing an optical module such as the LOS,
integrator, and coupling mirror assembly. The coupling mirror screws are potted in position from
production and not adjustable without replacing the mirror.
1. If the projector is equipped with LiteLOC, disable this feature so the RGB controls can be
accessed.
Cinema 4K-RGB Service Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
020-102713-06 Rev. 1 (08-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Service setups
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