Adjusting Horizontal Boresight - Christie CP2208 User Manual

5. Adjust both left and right horizontal adjusters by half the number of turns, in the opposite
direction of the vertical adjust.
For example, if the vertical adjust cap screw was turned 1/8 of a turn, the left and right
horizontal cap screws should be turned 1/16 of a turn in the opposite direction.
6. Check the screen each time an adjustment is made. If the quality of the projected image has
degraded, turn the vertical adjust cap screw 1/8 of turn clockwise.
Ensure the left and right horizontal adjusters are adjusted equally in the opposite direction to
correct axial focus. The 1/8 of a turn is a suggestion only and can be less if needed; however,
it should never be exceeded. Always compensate both left and right horizontal adjustments
according to the vertical adjustment.
7. Check the image after each adjustment. Continue to make adjustments until both top and
bottom are equally sharp. To make sure the lens is in the same relative position, adjust the left
and right horizontal adjusters in the opposite direction at the same time.
8. When the top and bottom of the image are equally in focus lock the set screw to hold it in
position. Recheck the image.
9. If additional adjustment is required, try adjusting horizontal boresight.
10. Replace the lens surround.

Adjusting horizontal boresight

Perform a horizontal boresight adjustment when the image cannot be focused uniformly on the screen
by aligning the projector to the screen and focusing the lens.
Caution! If not avoided, the following could result in minor or moderate injury.
• This procedure must be performed by Christie qualified technicians.
Typically, horizontal boresight does not require adjustment. It should only be adjusted if a large
horizontal angular offset to the screen is required.
When adjusting boresight, you must maintain the boresight distance from the lens to the prism plane
set by Christie. For example, when you move the top screw outward, turn the bottom two boresight
screws to maintain the overall distance.
Only adjust horizontal 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 you count each turn of the cap
screws to ensure accurate adjustment.
Ensure that the boresight lockdown screws are adequately tightened. Not adequately tightening the
boresight screws can result in excessive onscreen image vibration. After adjusting boresight, evaluate
the onscreen image vibration and re-adjust if needed.
1. Remove the lens surround.
2. Display the DC2K Boresight test pattern.
3. Loosen the right boresight set screw .
4. Turn the right boresight cap screw 1/16 of a turn clockwise.
5. Adjust the left boresight cap screw equally in the opposite direction.
6. If the quality of the projected image has not improved, turn the right boresight cap screw 1/16
of turn counter-clockwise. Make sure the left adjuster is adjusted equally in the opposite
direction.
CP2208 User Guide
020-101916-03 Rev. 1 (12-20120)
Copyright © 2020 Christie Digital Systems USA, Inc. All rights reserved.
Adjusting the image
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