Christie LCD projector User Manual download pdf (Page 114)

7-2 CP2210 User Manual

020-100410-08 Rev. 1 (05-2014)

Section 7: Maintenance

7.4 Inspect the Lamp

Always disconnect from AC and wear authorized protective safety gear.

• Check the contact surfaces of the anode (positive) and the cathode (negative) connections for cleanliness.

• Clean electrical contact surfaces regularly to prevent contact resistance from scorching connectors. Use an

approved contact cleaner.

• Verify that all electrical and lamp connections are secure.

7.5 Inspect and Clean Optics

Unnecessary cleaning of optics can increase the risk of degrading delicate coatings and surfaces. If you are not

a qualified service technician, you can only inspect and clean the lens and lamp reflector. Do not perform

maintenance on other optical components. 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 your bare hands. Always wear latex lab gloves.

These are the recommend tools 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 equiva-

lent

• For the reflector only - Methanol.

• Cotton swabs with wooden stems.

• Lens cleaning cloth or microfiber such as Melles Griot 18LAB024 or equivalent.

7.5.1 Clean the Lens

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.

Remove Dust

1. Brush most of the dust off with a camelhair 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 pressure with your fingers. 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

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.

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Christie LCD projector User Manual Page 114