Slide Burning & Picture Flicker
Explanation & Remedy
Lamp Adjustment Solution
Slide burning and picture flicker are problems common to Xenon projec- tors. The following is an explanation and remedy for these problems which can occur in any Xenon projector that is not adjusted properly.
1.Both problems, slide burning and picture flicker, are usually caused by the same thing – a misalignment of the Xenon lamp position.
2.If the slide or the slide mount is burning, this is definitely caused by a misalignment of the Xenon lamp position.
3.The flickering is caused by the physical nature of the Xenon lamp itself. Navitar has incorporated a magnet assembly above the lamp to solve this problem.
Before you try to fix either problem caused by misalignment of the Xenon lamp, please read the sections “Installing a New Lamp” and “Adjusting the Lamp Position.”
Proper adjustment of the three external lamp adjustments will provide a brilliant and uniform illumination without any hot spots on the screen. When this adjustment is done properly, the flickering may correct itself.
The Xenon lamp contains two probes inside a quartz envelope contain- ing Xenon gas. When a very high current and voltage is introduced across these probes, the Xenon gas is ionized and an arc of light is produced between the probes. Within the envelope, there are some heavier ions which will jump back and forth between the brilliant light path between the probes. This jumping of heavier ions is what produces the flickering.
Your Navitar Xenon projector has a
This means that if the lamp positioning is not correct, the lamp may have been pulled away from the magnetic force that draws these heavy particles to the main stream of particles. Therefore proper lamp adjust- ment for even illumination and brilliance should fix both of these prob- lems.
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