NEC PX803UL-WH User Manual page 46

TIP: To obtain the best focus, perform the following (for permanent installation)
Preparation: Warm up the projector for one hour.
1. Press the FOCUS +/− buttons to check the adjustable focus range. For checking it by the remote control, press and hold the CTL
button and press VOL./FOCUS +/− button. If the projector in use is not within the adjustable focus range, move the projector back
and forth.
2. Select the [TEST PATTERN] from the menu and display the test pattern. (→ page 86)
• For displaying the test pattern by the remote control, press TEST button.
3. Keep pressing the FOCUS − button until the grid of the text pattern becomes invisible.
4. Keep pressing the FOCUS + button until you obtain the best focus.
For obtaining the best focus by the remote control, press the VOL./FOCUS + button while holding to press the CTL button.
If you adjust beyond the best focal point, go back to step 3 and repeat the procedures.
5. Turn the edge focus ring clockwise or counterclockwise to adjust the focus at the edges of the projected image.
Applicable lens unit: NP39ML
1. Focus on the projected image around the optical axis. (Powered focus)
The optical axis is at the bottom of the image.
Press either the FOCUS +/− button on the control panel or the VOL/FOCUS +/− button while holding to press the
CTL button on the remote control.
2. Projecting an Image (Basic Operation)
Optical axis
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