Adjusting Dmd Convergence; Adjusting Fold Mirror - Christie CP2208 User Manual

11. Each corner of the screen should be equally in focus when horizontal boresight is completed
correctly. If necessary, repeat vertical boresight. Only adjust vertical boresight 1/8 of a turn or
less at one time to maintain optimal lens performance (factory setup of absolute lens distance
to the prism). It is critical that each turn of the cap screws is tracked to ensure adjustments are
accurate.

Adjusting DMD convergence

A convergence problem occurs when one or more projected colors (red, green, blue) appears
misaligned when examined with a convergence test pattern. Normally, the three colors should
overlap precisely to form pure white lines throughout the image and one or more poorly converged
individual colors may appear adjacent to some or all of the lines. Contact your Christie accredited
service technician to correct DMD convergence issues.

Adjusting fold mirror

If a corner or edge of an image is missing, the fold mirror might be misaligned with the optical
system. To correct this issue:
1. Remove the top lid and set it aside.
2. Display a full white test pattern:
a. On the touch panel controller (TPC), tap the Test Pattern (
b. Tap All Test Patterns.
c. Tap RGB-12bit-Full Screen White.
3. Insert a hex driver in the first set screw (A) and a hex driver in the first cap screw (B).
4. Equally turn the set screw (A) and cap screw (B) in opposite directions until the black corner is
removed.
CP2208 User Manual
020-101916-02 Rev. 1 (08-2015)
B
Set Screw (x2)
A
Cap Screw (x2)
B
Adjusting the Image
) icon in the task bar.
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