Christie CP4325-RGB Instruction Sheet page 11

Adjusting the LOS coupling mirror
Understand how to adjust the LOS coupling mirror.
1. On a tripod in front of the lens, set up an illuminance meter (such as a T10) aimed at the
center of the screen.
The illuminance meter must be facing the lens.
2. Decrease the red laser power to low (30% to 40%).
To access the laser power settings, in the left navigation pane, tap Laser Settings > Laser
Power/LiteLOC Setup.
3. Set the green and blue laser power levels to 0.
4. Turn on the light source.
5. Wait 15 minutes for the lasers to stabilize.
6. Adjust the LOS coupling mirror to maximize the lux reading on the illuminance meter.
7. To set the white point to DCI white, increase the green and blue power levels.
Make sure the red laser power is still set to low.
8. Visually check for uniformity and fine tune the elbow mirror adjustment.
9. Once the adjustment is complete, adjust the laser power to the required level.
10. Proceed to adjusting the integrator rod and fold mirror (on page 11).
Adjusting the integrator rod and fold mirror
Understand how to adjust the integrator rod and fold mirror to control the illumination spot on the
DMD.
Extreme misalignment of projection optics can cause permanent damage to critical optical
components. Only Christie qualified technicians can perform internal optical adjustments.
The integrator rod and fold mirror adjustments are set by Christie. Make adjustments only if screen
shadows are visible.
When adjusting the fold mirror, set the light source to minimum power.
1. In the right toolbar, tap Test Patterns.
2. Select the RGB-4K-Integrator Rod test pattern and display it full screen.
Replacing the CP4325-RGB Coupling Elbow Instruction Sheet
020-102890-01 Rev. 1 (07-2018)
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Replacing the CP4325-RGB coupling elbow
11