NEC NP-PA550W, Руководство пользователя

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2. Projecting an Image (Basic Operation)
Applicable lens: NP11FL
With the NP11FL lens, adjust the focus and picture distortion.
Preparations:
Turn the lens shift dials (vertical and horizontal) on the projector to return the lens shift to the center.
Approximate lens center position (explained here for the desktop front projection mode)
Horizontal dial: First turn the dial to the left edge, then turn it further so that the knob is horizontal. From this
position, turn the dial 1 full turn clockwise.
Vertical dial: First turn the dial to the bottom edge, then turn it further so that the knob is horizontal.
From this position, turn the dial 2 full turns counterclockwise.
1. Turn the distortion ring to the left edge.
2. Turn the focus lever clockwise and counterclockwise to
adjust the focus at the center of the screen.
3. Use the distortion ring to correct the screen’s distortion.
(This also brings the edges of the screen into focus.)
4. Use the focus lever to adjust the screen’s overall focus.
* If the focus at the center of the screen is off, turn the distortion
ring a little counterclockwise. The focus at the center of the
screen can now be adjusted with the focus lever.
Distortion
ring
Lens shift dials
Focus lever