Projector brightness lower than expected
Why is the projector output not as bright as expected.
Details
The following are possible causes for drops in brightness:
•
Ultra high contrast lenses can drop brightness by up to 35%.
•
The actual ambient temperature being above 25°C limits brightness.
•
From the factory, the maximum expected ambient temperature is set to 35°C, whereas 100%
brightness occurs with an ambient temperature setting of 25°C.
The ambient temperature sensor in the projector reads the current temperature. The value set
through the user interface is the maximum expected ambient temperature, not the current
temperature. The projector needs to know the maximum expected temperature to ensure
consistency of the red power across the temperature range.
•
With LiteLOC v2.0, if the ambient conditions react and reduce laser power, it does not regain
the available brightness automatically. LiteLOC requires a laser power cycle or profile change
to issue the laser power settings again.
•
An error may have occurred due to an optical misalignment of the optical coupling mirror that
shows up as a brightness drop on the screen.
•
If the DMDs overfill, up to 10% loss of brightness can occur.
Resolution
1. Use a lens that is not ultra high contrast.
2. Reduce the actual ambient temperature.
3. Reduce the maximum ambient temperature set point.
Reducing the maximum expected ambient set point increases the red output. Reducing the
actual ambient temperature of the environment increases the green and blue output.
4. Reduce the brightness target using the LiteLOC
™
feature.
5. Disable LiteLOC v2.0 or adjust the laser powers.
Any adjustment to the brightness slider or an individual laser power re-sends the power
settings for all colors.
6. Adjust the integrator zoom setting.
Projector noisier than expected
How do I make the projector quieter?
Details
The speed of the fans changes with the ambient temperature and as the temperature increases, the
speed and noise of the fans increase. 4K40-RGB software version 1.3.0 includes dynamic fan control.
4K40-RGB troubleshooting
4K40-RGB Technical Reference–Troubleshooting
14
020-103239-01 Rev. 1 (09-2020)
Copyright
©
2020 Christie Digital Systems USA, Inc. All rights reserved.
Summary of Contents for Mirage 4K40-RGB
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