NEC PX-50XM4 series Service Manual page 118

Adjusting the color to the desired level
Use this procedure to adjust the white balance for each
color temperature to achieve the desired color quality.
Example: Adjusting the "GAIN RED" of "HIGH" color
temperature
Set "ADVANCED OSM" to "ON" in the main menu (1/
2), then perform the following operations.
On "COLOR TEMP." of "PICTURE" menu, select "HIGH",
then press the MENU/ENTER button.
The "WHITE BALANCE" screen appears.
On "GAIN RED", adjust the white balance.
WHITE BALANCE
COLOR TEMP. HIGH
GAIN RED
GAIN GREEN
GAIN BLUE
BIAS RED
BIAS GREEN
BIAS BLUE
RESET : OFF
SEL. ADJ. EXIT RETURN
Information
Adjusting the white balance
GAIN R/G/B: White balance adjustment for white level
BIAS R/G/B: White balance adjustment for black level
RESET: Resets settings to the factory default values.
Use and buttons to select "ON", then press the
MENU/ENTER button.
Restoring the factory default settings
Select "RESET" under the WHITE BALANCE menu.
Changing the Gamma Curve
This feature adjusts the brightness of the midtone areas
while keeping shadows and highlights unchanged.
Example: Setting "3"
Set "ADVANCED OSM" to "ON" in the MAIN MENU
(1/2), then perform the following operations.
On "GAMMA" of "PICTURE" menu, select "3".
PICTURE
PREVIOUS PAGE
COLOR TEMP.
GAMMA
LOW TONE
COLOR TUNE
SEL. ADJ.
Information
GAMMA settings
The picture becomes darker as the number increases
(in the sequence of 1, 2, 3, 4).
GAIN RED 70
2 / 2
: MID
: 3
: AUTO
EXIT RETURN
E-19
4-23
Making the Low Tone adjustments
This feature allows more detailed tone to be reproduced
especially in the dark area.
Example: Setting "2"
Set "ADVANCED OSM" to "ON" in the MAIN MENU
(1/2), then perform the following operations.
On "LOW TONE" of "PICTURE" menu, select "2".
PICTURE
PREVIOUS PAGE
COLOR TEMP.
GAMMA
LOW TONE
COLOR TUNE
SEL. ADJ.
Information
LOW TONE settings
AUTO: Will automatically appraise the picture and
make adjustments.
1: Will apply the dither method suitable for still pictures.
2: Will apply the dither method suitable for motion
pictures.
3: Will apply the error diffusion method.
Adjusting the colors
Use this procedure to adjust hue and color density for red,
green, blue, yellow, magenta and cyan.
Such adjustments will not affect the other colors.
You can accentuate the green color of trees, the blue of
the sky, etc.
Example: Adjusting the color tune for blue
Set "ADVANCED OSM" to "ON" in the MAIN MENU
(1/2), then perform the following operations.
On "PICTURE" menu, select "COLOR TUNE", then press
the MENU/ENTER button.
The "COLOR TUNE" screen appears.
On "BLUE" of "COLOR TUNE", adjust the color tune.
COLOR TUNE
RED
GREEN
BLUE
YELLOW
MAGENTA
CYAN
RESET
SEL. ADJ.
Information
COLOR TUNE settings
RED: Makes red's adjustment
GREEN: Makes green's adjustment
BLUE: Makes blue's adjustment
YELLOW: Makes yellow's adjustment
MAGENTA: Makes magenta's adjustment
CYAN: Makes cyan's adjustment
RESET: Resets settings to the factory default value.
Use and buttons to select "ON", then press the
MENU/ENTER button.
CONFIDENTIAL
2 / 2
: MID
: 2
: 2
EXIT RETURN
: OFF
EXIT RETURN