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Section 2: Service Guidelines
2.1.4 Repair Cautions
•
DO NOT
short transistors or ICs during circuit checks.
•
DO NOT
short or remove bias resistors while the projector is operating.
•
operate with heat sinks removed.
DO NOT
•
overload transistors or ICs. Ensure the projector is disconnected from AC power before testing,
DO NOT
removing, or installing modules.
•
DO NOT
operate the projector with any internal part removed. If, for testing purposes, you must operate the
projector without the lid and/or lamp door, ensure you are wearing authorized protective clothing, such as
that included in the Christie Protective Clothing Safety Kit (P/N: 598900-095).
DANGER! NEVER strike the lamp or run the lamp with the lamp door removed.
2.2
Safety Warnings and Guidelines
2.2.1 Labels and Markings
• Observe and follow any warnings and instructions marked on the projector.
• The exclamation point within the equilateral triangle indicates related operating/maintenance instructions in
the documentation accompanying the projector.
• The lightning flash and arrowhead symbol within the equilateral triangle indicates non-insulated "dangerous
voltage" within the projector's enclosure that may be of sufficient magnitude to constitute a risk of electric
shock.
2.2.2 General Precautions
• Never look directly into the projector lens or at the lamp. The extremely high brightness can
cause permanent eye damage. For protection from ultraviolet radiation, keep all projector
housings intact during operation. Protective safety gear and safety goggles are recom-
mended when servicing.
FIRE HAZARD! Keep hands, clothes, and all combustible material away from the
concentrated light beam of the lamp.
• Position all cables where they cannot contact hot surfaces or be pulled or tripped over.
• The American Conference of Governmental Industrial Hygienists (ACGIH) recommends occu-
pational UV exposure for an 8-hour day to be less than 0.1 microwatts per square centime-
ters of effective UV radiation. An evaluation of your workplace is advised to assure
employees are not exposed to cumulative radiation levels exceeding the government guide-
lines for your area. Be aware that some medications are known to increase sensitivity to UV
radiation.
This projector must be operated in an environment that meets the operating range specification, as listed in
Section 8
Specifications.
2-2
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
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