Christie CP42LH Service Manual page 30

1. Focus the image at the top edge of the screen.
2. Loosen the vertical lock screw (A).
3. Extend the lens focus (B) completely.
4. To retract the lens, adjust the Focus 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, determine if the bottom edge
focuses in front of or behind the screen.
If the entire screen is in focus, proceed to step 8.
5. Continue retracting the lens.
a. If the bottom edge of the image comes into focus before the lens is completely retracted,
adjust the vertical boresight bolt (C) to direct or aim the lens mount UP towards the top
of the screen to balance the top/bottom edges.
b. If the top edge of the image is not in focus, adjust the vertical boresight bolt (C) to direct
or aim the lens mount toward the bottom of the screen.
6. 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.
7. Repeat steps 2 to 6 until the top and bottom of the screen are both well-focused.
8. Re-focus the center of the image. The goal is for good focus at the center and on all sides.
9. Tighten the vertical lock screw (A) to maintain the adjustments.
10. Check the boresight again.
CP42LH Service Manual
020-101686-03 Rev. 1 (08-2016)
C A
Adjust the Image
B
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