NEC Projector LT20 User Manual

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The Projector has multilingual On-Screen menus that allow you
to make image adjustments and change a variety of settings. The
projector will automatically detect the source.
How to operate
1.To open the OSM menu, press “Menu” on the Remote Control
or Control Panel.
2.When OSM is displayed, use   keys to select any item in the
main menu.  While making a selection on a particular page, press
“Enter” key to enter sub menu.
3.Use  keys to select the desired item and adjust the
settings by...

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Language
Language
Choose the multilingual OSM menu . Use the or  key to select
your preferred language.
Press “Enter” to finalize the selection.
User Controls 

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Image (All)
Brightness
Adjust the brightness of the image.
Press the  to darken image.
Press the  to lighten the image.
Contrast
The contrast controls the degree of difference between the lightest
and darkest parts of the picture. Adjusting the contrast changes
the amount of black and white in the image.
Press the  to decrease the contrast.
Press the  to increase the contrast.
White Peaking
White peaking can be incrementally adjusted between 0 and 10.
Click on the slider bar to adjust....

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Image (All)
4:3 : The input source will be scaled to fit the projection-screen.
16:9 : The input source will be scaled to fit the width of the
screen.
Display Mode
There are many factory presets optimized for various types of
images.
Presentation : For presentation.
Video : For home theater.
Game : For game.
sRGB : For PC standard color.
User : Memorize user’s settings.
Reset
Choose “Yes” then “Enter” pressed, the display parameters on this
menu will return to their factory default...

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Image Computer
(Computer mode)
Auto Adjust
The projector automatically adjusts clock, phase, horizontal
and vertical. With most signal sources, Auto Adjust provides the
best results.
Clock
“Clock”changes the display data frequency to match the
frequency of your computer’s graphic card. If you experience a
vertical flickering bar, use this function to make an adjustment.
Phase
“Phase” synchronizes the signal timing of the display with the
graphic card. If you experience an unstable or...

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Image Video
(Video mode)
Color
Adjusts a video image from black and white to  fully saturated
color.
Press the  to decrease the amount of color in the image.
Press the  to increase the amount of color in the image.
Sharpness
Adjusts the sharpness of the image.
Press the  to decrease the sharpness.
Press the  to increase the sharpness.
Hue
Adjusts the color balance of red and green.
Press the  to increase the amount of green in the image.
Press the  to increase the amount of red  in...

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Setup
Menu Location
Choose the menu location on the display screen.
Orientation
Front-Desktop
The factory default setting.
Rear-Desktop
When you select this function, the projector reverses the image
so you can project behind a translucent screen.
Lamp Hour
Display the cumulative lamp operating time.  The lamp hour in
OSM is calculated by “Normal mode”, when “ECO mode” is
selected, the system will convert from “ECO mode” lamp hour to
“Normal mode”.
Signal Type
Select signal type RGB or...

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Setup
User Controls
Lamp Mode
Choose “ECO” to dim the projector lamp which will lower power
consumption and extend the lamp life by up to 150%. Choose
”Normal” to return standard mode.
Lamp Reminding
Choose this function to show or to hide the warning message when
the changing lamp message is displayed.  The message will show up
100 hours before end of life.
Clear Lamp Hour
Turns the lamp hour counter to 0 hours.
Reset
Choose “Yes” then “Enter” pressed, the display parameters (except
for...

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Appendices
Problem: No image appears on-screen.
Ensure all the cables and power connections are correctly and
securely connected as described in the “Installation” section.
Ensure the pins of connectors are not crooked or broken.
Check if the projection lamp has been securely installed. Please
refer to the “Replacing the lamp” section.
Make sure you have removed the lens cap and the projector is
switched on.
Press “Picture Mute” button to make sure the image has not been
turned off...

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Appendices
4.Follow the above steps 1-2. Click on the “Advanced Properties”
button.
5.Select the “Change” button under the “Monitor” tab.
6.Click on “Show all devices”. Then select “Standard monitor
types” under the “Manufacturers” box; choose the resolution
mode you need under the “Models” box.
7.Verify that the resolution setting of the monitor display is less
than or equal to 1024 x 768.
If you are using a Notebook PC:
1.You are required to implement the above steps of resolution...