Video & projection
Christie Bore Adjustment Screws troubleshooting
The Christie Bore Adjustment Screws problems live-event techs bring to Ask Roadie most. Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common Bore Adjustment Screws errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
Does a motorized/intelligent lens mount (ILS) let me set boresight from the menu?
Likely cause: ILS actuators drive the shift/focus/zoom stages; the tilt datum is fixed hardware, so boresight is always done by hand at the lens mount.
- Step-by-step fixGet the fix →
How can I recover the factory (default) boresight if the screws were moved?
Likely cause: Flush, in-contact set screws reproduce the neutral mechanical datum the mount ships in, giving a known starting point for fine alignment.
- Step-by-step fixGet the fix →
How do I adjust horizontal (left/right) boresight?
Likely cause: The hold screw clamps the lens-mount plate; it must be loose to move the tilt and re-tightened so vibration/handling does not drift the alignment.
- Step-by-step fixGet the fix →
How do I adjust vertical (up/down) boresight?
Likely cause: Vertical tilt of the lens plane is corrected the same way as horizontal; re-centering focus after each axis prevents chasing one corner at the expense of another.
- Step-by-step fixGet the fix →
The lens will not focus across the full throw range / boresight will not converge — what do I do?
Likely cause: When residual tilt exceeds the fine adjuster range, the mount plate itself must be re-seated with the set/cap screws before fine boresight can bring all corners into focus.
- Step-by-step fixGet the fix →
What is the correct documented boresight adjustment procedure on a Christie projector?
Likely cause: Offset changes where the light hits the lens; doing it first means boresight only has to correct residual tilt.
- Step-by-step fixGet the fix →
What is the difference between boresight, offset, and focus — techs keep confusing them?
Likely cause: They are three independent optical axes; naming them correctly stops techs from unnecessarily disturbing factory boresight.
- Step-by-step fixGet the fix →
Which test pattern and success criterion should I use to judge boresight?
Likely cause: A uniform grid makes small differences in edge focus visible; simultaneous corner+center sharpness is the definition of a correctly tilted lens plane.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the Bore Adjustment Screws
- 1. Pick the Christie Bore Adjustment Screws. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.
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