Inspecting The Ventilation; Inspecting The Lamp; Inspecting And Cleaning The Optics - Christie CP2420-Xe Service Manual

Inspecting the ventilation

Vents and louvers in the projector covers provide ventilation, both for intake and exhaust.
Never block or cover these openings. Do not install the projector within an enclosure or near a radiator
or heat register.
To ensure adequate airflow around the projector, keep a minimum clearance of 50 cm (20 in.) on the
sides of the projector.

Inspecting the lamp

Inspect the contact surfaces of the lamp connections.
Warning! If not avoided, the following could result in death or serious injury.
• SHOCK HAZARD! Disconnect the product from AC before installing, moving, servicing, cleaning,
removing components, or opening any enclosure.
• EXPLOSION HAZARD! Always wear manufacturer approved protective safety clothing (gloves,
jacket, face shield) whenever the lamp door is open or when handling the lamp. Any local or
federal specifications take precedence over Christie's protective clothing recommendations.
1. Check the contact surfaces of the anode (positive) and the cathode (negative) connections for
cleanliness.
2. Clean electrical contact surfaces every 5000 hours or after two lamp changes to prevent
contact resistance from scorching connectors. Use an approved contact cleaner.
3. Verify all electrical and lamp connections are secure.

Inspecting and cleaning the optics

Inspect and clean optical components such as the projection lens to ensure optimum image display.
Unnecessary cleaning of optics can increase the risk of degrading delicate coatings and surfaces. 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.
Typically, optical components do not need to be cleaned frequently if installed and operated in a
location that meets or exceeds the environmental standard recommended by Christie. Christie
recommends all cinema projectors are installed and operated in an environment meeting or exceeding
Underwriters Laboratories (UL) standard 609.50 Pollution Degree 2 and ISO Class 9 Standard for
Office Environments.
Notice. If not avoided, the following could result in property damage.
• Christie products must be installed and serviced by Christie qualified technicians.
• Always wear clean, powder-free latex gloves when handling optical components.
• Do not reuse lens tissues.
• Always handle optics by their edges.
CP2420-Xe and CP4420-Xe Service Guide
020-103566-02 Rev. 1 (07-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Maintenance and cleaning
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