Adjust Top And Bottom Boresight With An Ils; Adjust Dmd Convergence - Christie CP4230 Setup Manual

4.8

Adjust Top and Bottom Boresight with an ILS

1. Loosen the Vertical Locking Screw.
2. Extend the lens focus completely.
3. Adjust the Focus to retract the lens using the counter-clockwise
button on the ILS Adjust window. Watch the image at the top edge
of the screen until it comes into focus. If the image appears well
focused on the top edge but not on the bottom, we need to
determine if the bottom edge focuses in front of or behind the
screen. If the entire screen comes into focus, skip to step 8.
4. Continue retracting the lens.
a. If the bottom edge of the image comes into focus before the
lens is completely retracted, then the image focuses in front of
the screen. To correct this problem, adjust the Vertical Bore-
sight Bolt to direct or aim the lens mount UP towards the top
of the screen to balance out the top/bottom edges.
b. If the top edge of the image fails to come into focus
then the image focuses behind the screen. To correct
this problem, adjust the Vertical Boresight Bolt to
direct or aim the lens mount DOWN towards the bot-
tom of the screen.
5. When both sides appear equally blurry, tap Menu >
Advanced Setup > ILS File Setup and tap the
directional arrows in the Offset area to center the image
on the screen.
6. Repeat Steps 2 - 5 until the top and bottom of the screen
are both well-focused.
7. Although all sides of the image should now be in focus,
the center of the image may be slightly blurry at this point. Re-focus the center of the image. The goal is
for good focus at the center and on all sides.
8. Adjust the Vertical Locking Screw to lock the lens mount in place and check boresight again.
4.9

Adjust DMD Convergence

DANGER
convergence adjustments.
A convergence problem occurs when one or more projected colors (red, green, blue) appear 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.
CP4230 Setup Guide
020-100669-03 Rev. 1 (5-2014)
UV EXPOSURE! Protective UV glasses must be worn when performing
Section 4: Adjust the Image
Vertical
Boresight
Bolt
Figure 4-7 Vertical Boresight
Focus Left
Edge Center
Figure 4-8 Adjust Vertical Boresight
Vertical
Locking
Screw
4-5