Laminar Airflow Device (Lad); Cleaning - Christie D4K35 Service Manual

Laminar Airflow Device (LAD)

Check: Every 6 months
The LAD filter is located in the light engine compartment. It is secured to the light engine assembly handle.
The LAD filter should be nearly white in color. If it appears a dark gray color (rare) it will require replacement
by a Christie authorized service technician. Contact Christie or your dealer.
2.9

Cleaning

ELECTRICAL SHOCK HAZARD! DISCONNECT FROM AC WHEN SERVICING.
Maintaining the cleanliness of all internal components during any service procedure is critical. In particular, all
of the projector's optics must remain free of contaminants in order to perform at the level specified for the
projector. Even a small amount of dust or a fingerprint may degrade the image or cause a noticeable reduction
of brightness. During servicing, take all necessary measures to avoid touching or contaminating optical
surfaces. A MINIMUM
during servicing you notice that a component is dirty or dusty, or if you have accidentally contaminated a
component, refer to 9: Guidelines for Cleaning to determine the appropriate cleaning action needed. NOTE:
It is critical the projector be powered OFF and disconnected from AC before the lens or any of the projection
head covers/doors are loosened and removed.
Table 2.1 Guidelines for Cleaning
Components
Lamp
Lamp Reflector
Illumination Optics System,
general
Integrator
D4K35 Service Manual
020-100817-01 Rev. 1 (04-2012)
ALWAYS WEAR GLOVES WHEN HANDLING INTERNAL COMPONENTS.
amount of cleaning—hopefully none—should be required during and after servicing. If
Preventative Measures
Wear protective gear approved by Christie,
and handle by the ends only. Never grip the
glass portion of the lamp. NOTE: Any fin-
gerprints will reduce output quality and
shorten lamp life.
Wear protective gear approved by Christie.
NEVER touch or blow on exposed compo-
nents. Wear gloves (supplied).
NEVER disassemble the integrator module.
Section 2: Service Guidelines
Cleaning Technique
Remove fingerprints or dirt with pure isopropyl
alcohol and a clean lint-free cloth.
Remove fingerprints or dirt with methanol and
clean, microfiber cloth such as Melles Griot
18LAB024 or equivalent.
Use ionized pneumatic guns only. Keep imaging
components and yourself grounded at all times.
Blow off visible particles with clean, dry de-
ionized air.
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