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Lenses & lens holder
1
2
3
Image 6-19
6.
Zoom the lens for minimum image on the screen (TELE) and focus the center of the projected image using the
motorized focus control (Local Keypad).
Image 6-20
7.
Is it possible to focus the center of the projected image using the motorized focus control (Local Keypad) ?
Ensure that the lens is zoomed for minimum image on the screen (TELE).
► If yes,
no further adjustment actions required. Proceed with step 8.
► If no,
obtain the best possible focus in the center of the projected image using the motorized focus control
and then turn the three Scheimpflug adjustment nuts, reference 1, 2 and 3 Image 6-21, equally in or out until
the center of the projected image is sharp. Note: the same turning direction as in step 5 is applicable.
1
2
3
Image 6-21
8.
Check if it is possible to focus the center of the projected image using the motorized focus control (Local
Keypad) for WIDE and for TELE.
► If yes,
the Back Focal Length is correctly adjusted.
► If no,
repeat with step 4.
9.
Is the projected image in the corners as sharp as in the middle?
► If yes,
proceed with the procedure "Fixation of the Lens Holder front plate", page 78.
► If no,
Scheimpflug adjustment is required. See procedure "Scheimpflug adjustment", page 75, prior to fixate
the Lens Holder front plate. CAUTION: Skip the action, in the Scheimpflug adjustment procedure, to turn the
three Scheimpflug adjustment nuts until the front of the nut is equally aligned with the front of the threaded rod!
74
R5906897 /02
Prometheus III
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