Barco F90 series, Service Manual

Page: 45 / 141

10. Optical adjustments
10. OPTICAL ADJUSTMENTS
10.1 Perfecting the lightning path
• Test Image: Full White
• Tool: 1,5mm hex key
The projection system provides traditional facilities to adjust x & y orientation of the lighting mirror to ensure the DMD active image
area is illuminated and available light is fully utilized.
Additionally, the system has facilities to adjust the focus plane of the light beam at rod exit side (rod focus) towards the DMD by
adjusting Relay tube focus.
The system also features possibility to perfect the color uniformity within each leg through adjustment of the TI Loop mirror.
All these elements contribute towards providing the brightest, sharpest and most uniform image as possible in this class of projection.
10.2 Lightning Mirror adjustment:
Located on the Illumination engine, outside the folding mirror assembly you fi nd traditional mirror adjustment. Two adjustment knobs
allow you to adjust the orientation of the mirror. The upper knob (A) adjusts the Horizontal (X) direction while the lower knob (B) is
for Vertical mirror adjustment (Y).
Location of the
lightning mirror knobs
A
B
Image 10-1
10.3 Lightning mirror: Horizontal (x) Adjustment
Turn knob (A) with fi ngers to adjust mirror horizontally until full image is projected, no vertical bands are present in edge of image
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