NEC PE506UL - [Contrast]; [Brightness]; [Color Temp.]; [Red]

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5. Using On-Screen Menu
(Green). This is designed for a board in green rather than black as indicated by its name.
Color board
A image mode suitable for image projecting on surface of wall in red, blue, yellow or green. Press the ENTER button
to enter Color board menu, then press ▲ ▼ button to select Red, Blue, Yellow or Green, press the ENTER button.
Color adjust
Colorboard
Red
Blue
Green
Yellow
User image
Users can customize the color adjustment.
[Contrast]
Press ▼ button to decrease contrast, range from 0 - +63.
Press ▲ button to increase contrast, range from 0 - +63.
[Brightness]
Press ▼ button to decrease brightness, range from 0 - +63.
Press ▲ button to increase brightness, range from 0 - +63.
[Color temp.]
Press ▲ ▼ button to select required color temperature (Low, Mid., High and User)
High temp: Become blue gradually.
Mid temp: Suitable natural color.
Low temp: Become red gradually.
User:You can adjust the Red, Green, Blue and Yellow values by yourself.
[Red]
Press ▼ button to decrease red tint and ▲ button to increase it.
[Green]
Press ▼ button to decrease green tint and ▲ button to increase it.
[Blue]
Press ▼ button to decrease blue tint and ▲ button to increase.
[Sharpness]
Press ▼ button to soften image and ▲ button to sharpen, range from 0 - +15.