Inspect And Clean Optics; Remove Dust From The Projection Lens; Remove Fingerprints, Smudges, Or Oil From The Projection Lens - Christie D4K2560 User Manual

Mirage 4k25
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Maintenance

Inspect and Clean Optics

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 the lens only if absolutely required. The
reflector and projection lens may be inspected and cleaned as per the following instructions.
Any other optical maintenance should only be performed by qualified service technicians.
Check these components periodically in a clean, dust-free environment using a high-intensity light
source or flashlight. Clean them only when dust, dirt, oil, fingerprints or other marks are obvious.
Never touch an optical surface with bare hands. Always wear lint-free lab gloves.
The following tools are recommend for removing dust or grease:
Soft camel-hair brush
Dust-free blower - filtered dry nitrogen blown through an anti-static nozzle.
Dust-free lens tissue, such as Melles Griot Kodak tissues (18LAB020), Opto-Wipes (18LAB022),
Kim Wipes or equivalent.
For the lens only - lens cleaning solution such as Melles Griot Optics Cleaning Fluid 18LAB011 or
equivalent
For the reflector only - Methanol.
Cotton swabs with wooden stems.
Lens cleaning cloth or microfiber such as Melles Griot 18LAB024 or equivalent.

Remove Dust from the Projection Lens

1. Brush most of the dust off with a camel-hair brush or use a dust-free blower.
2. Fold a microfiber cloth and wipe the remaining dust particles off the lens with the smooth portion
of the cloth that has no folds or creases. Do not apply finger pressure. Instead, use the tension in
the folded cloth to remove the dust.
3. If significant dust remains on the lens surface, dampen a clean microfiber cloth with lens cleaning
solution and wipe gently until clean.
Remove Fingerprints, Smudges, or Oil from the Projection
Lens
1. Brush most of the dust off with a camelhair brush or use a dust-free blower.
2. Wrap a lens tissue around a swab and soak it in lens cleaning solution. The tissue should be
damp but not dripping.
3. Gently wipe the surface using a figure eight motion. Repeat until the blemish is removed. Clean
the lens only if absolutely required.
48
D4K2560/Mirage 4K25 User Manual
020-101076-02 Rev. 1 (11-2013)

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