Christie M Series Service Manual page 17

Cleaning dust from the lens
Check the lens periodically. A small amount of dust or dirt on the lens has minimal effect on image
quality. To avoid the risk of scratching the lens, clean only if absolutely necessary.
1. Brush most of the dust away with a camel-hair brush and/or blow dust away with a dust-free
blower.
2. Fold a microfiber cloth smooth and gently wipe dust particles from the lens. Wipe evenly with
the smooth portion of the cloth that has no folds or creases. Do not apply pressure with your
fingers - use the tension in the folded cloth itself to collect dust.
3. If significant dust is still bound to the surface, dampen a clean microfiber cloth with coated
optics cleaner solution (damp, not dripping). Wipe gently until clean.
Cleaning fingerprints, smudges, or oil from the lens
Check the lens periodically. A small amount of dust or dirt on the lens has minimal effect on image
quality. To avoid the risk of scratching the lens, clean only if absolutely necessary.
1. Brush away most of the dust with a camel-hair brush and/or blow away using a dust-free
blower.
2. Roll a lens tissue around a swab and soak it in coated optics cleaner solution. Tissue should be
damp, but not dripping.
3. Gently wipe the surface with a figure-8 motion. Repeat this motion until the blemish is
removed.
M Series Service Guide
020-100551-11 Rev. 1 (01-2019)
Copyright 2019 Christie Digital Systems USA, Inc. All rights reserved.
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Service guidelines
17