Cleaning - Christie D4K25 Service Manual

Section 2: Service Guidelines
2.7

Cleaning

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, see 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
2-10
ELECTRICAL SHOCK HAZARD! Disconnect from AC when servicing.
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 fingerprints will reduce
output quality and shorten lamp life.
Wear protective gear approved by
Christie.
NEVER touch or blow on exposed
components. Wear gloves (supplied).
NEVER disassemble the integrator
module.
NEVER touch or blow on interior
components. Wear gloves (supplied).
NOTE: Normally the internal parts
should not be accessed.
NEVER touch or blow on components.
Use gloves.
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 isopropyl alcohol on the glass
surface. NEVER touch the imaging panels.
Note that the green imaging panel has a
glass behind it as well.
020-100880-01 Rev. 1 (06-2012)
D4K25 Service Manual