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Lenses & lens holder
Image 6-14
5.
Zoom the lens for maximum image on the screen (WIDE).
6.
Is it possible to focus the center of the projected image?
► If yes,
the Back Focal Length is OK.
► If no,
the Back Focal Length needs realignment. Proceed with the next procedure.
How to adjust the Back Focal Length?
1.
Unlock and loosen the 4 set screws (reference 11 Image 6-15) of the Lens Holder by 1 centimeter. Use a
10mm nut driver for the lock nuts (reference 21 Image 6-15) and use a 3mm Allen wrench for the set screws.
Image 6-15
2.
Fully loosen the Scheimpflug nut at the lower left of the Lens Holder (reference 4 Image 6-16). Use a 13mm
nut driver.
Image 6-16
3.
Turn the three Scheimpflug adjustment nuts, reference 1, 2 and 3 Image 6-17, until the front of the nut
(reference 5 Image 6-17) is equally aligned with the front of the threaded rod (reference 6 Image 6-17). Use a
13mm nut driver.
72
R5906897 /02
Prometheus III
11
21
11
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