Cleaning - Christie CP4230 Service Manual

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
MINIMUM
surfaces. A
during servicing you notice that a component is dirty or dusty, or if you have accidentally contaminated a
component, refer to Table 2.1 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
Illumination System, internal
lenses/prisms
Light Engine components
Light Engine, DMD panels
Projection Lens
CP4230 Service Manual
020-100622-04 Rev. 1 (05-2016)
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.
NEVER touch or blow on interior compo-
nents. Wear gloves (supplied). NOTE: Nor-
mally the internal parts should not be
accessed.
NEVER touch or blow on components. Use
gloves.
NEVER touch or blow on the panels.
To avoid the risk of scratching the lens, only
clean the lenses if absolutely required. A
small amount of dust on the lenses will have
very little effect on picture quality. The pro-
jection lens should be free of dust and fin-
gerprints. If the lenses must be cleaned, use
a DRY soft cotton cloth. Rub gently in a cir-
cular motion.
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.
Blow off particles with clean, dry de-ionized air.
Then, if necessary, wipe in a single direction
with a clean high quality optical cloth.
Blow off particles with clean, dry de-ionized air.
If necessary, use a split Q-tip with pure isopro-
pyl alcohol on the glass surface. NEVER touch
the imaging panels. Note that the green imaging
panel has a glass behind it as well.
Blow off particles with clean, dry de-ionized air.
Use filtered compressed air to blow out dust.
Remove fingerprints or dirt with Melles Griot
Cleaning Fluid 18LAB011(or equivalent) and a
clean lint-free cloth.
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