3-6
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
Section 3: Service Setups
3.4
DMD Convergence Procedure
Always wear an ESD strap when replacing the light engine or any other circuit
board; however, it is not recommended to wear a strap while converging a
live unit, but to instead ensure frequent contact with the bare metal of the
projector to prevent static build-up.
NOTICE!
This document is written only as a supplement descriptive guideline for information on
convergence. Personal tool preference, mechanical experience and individual techniques are
all variables that make this document a subjective tool for use only by experienced
professional technicians.
Do not run the projector while performing convergence with the Light Engine Fan Pack or the
Cooling Duct removed. This will cause overheating of the Satellite Formatter Board FPGA’s.
The projector uses three separate DMD panels to produce three separate red, green and blue image
components. To ensure the most accurate color representation across the whole image it is essential the three
panels are perfectly aligned so that all pixels line up. The following convergence procedure outlines how to
achieve this. Only Christie authorized service technicians should perform the following procedure. Read this
entire section before adjusting convergence.
Figure 3-5 DMD Convergence
