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Maintenance and Troubleshooting
74 CineWall™ Installer/Integrator Manual
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Removing dry dust: Often the cleaning problem is just dust, not fingerprints or other oily
dirt. If it’s just dust, wiping with a dry cheesecloth or a dry Shop Towel will usually do the
job.
Or use one of the cleaning products designed specifically for picking up dust.
• Pledge Grab-It™, from Johnson
• Swiffer™, from Proctor and Gamble.
These are synthetic wipes that have a static charge that holds onto dust. They do a very
good job of picking up dust and leaving no lint behind. However, they will not wipe away
grease or oil, such as fingerprints, and they can’t be used with liquid cleaners.
Cleaning lenses: Clean lenses as you would the glass mirrors. Use a soft, absorbent
cotton cloth rather than a paper towel. Because the lens is small, it is easier to spray the
cleaner (if you use one) on the cloth, not the lens itself.
Where is the dirt? When you see dirt in the picture, you can sometimes tell where it is by its focus. Use a
white test pattern to see the dirt most easily.
Small specs of dirt or dust that are in very sharp focus are on the screen itself.
If the dirt is in soft focus, it is probably a smudge on the large mirror.
Dirt on the output lens cannot be seen in the picture. However, that does not mean you
should not clean this lens. Dirt here will reduce the brightness of the picture, but it won’t
show up as specs in the picture.
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