Remove Dust From The Projection Lens - Christie D4K2560 User Manual

2. Fold a microfiber cloth and wipe the remaining dust particles off the lamp 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.
Inspect and clean optics
Notice. Failure to comply with the following may result in property damage.
• 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.
• Always wear powder free latex gloves when handling and cleaning projector optics.
• Only use solvents if dirt remains after dusting with compressed air.
• Do not reuse lens tissues. Use a clean tissue for each cleaning attempt.
• Handle optics by their edges.
Inspect 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 recommended for removing dust or grease:
• Powder free latex gloves
• Soft camel-hair brush
• Dust-free blower—filtered dry nitrogen blown through an anti-static nozzle
• Lint-free lens tissue, such as Lensx 90 tissue or Newport Optics cleaning tissue
• For the lens only—lens cleaning solution and microgiber cloth
• For the reflector only—Methanol
• Isopropyl Alcohol Reagent Grade (ACS) 99.9%
• Acetone Reagent Grade (ACS)
• Optical grade cotton swabs with wooden stems
• Sticklers Fiber Optic Cleaner (can be used on all optical components)
• A bright, portable illumination device such as an LED flashlight

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.
D4K2560 User Manual
020-101076-04 Rev. 1 (01-2015)
Maintenance
64