Setting The Color Temperature; Adjusting The Color To The Desired Level; Changing The Gamma Curve; Making The Low Tone Adjustments - NEC PX-50XM4 series Service Manual

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Setting the color temperature

Use this procedure to set color tone produced by the plasma
display.
Example: Setting "HIGH"
On "COLOR TEMP." of "PICTURE" menu, select "HIGH".
PICTURE
PICTURE MEMORY
CONTRAST
BRIGHTNESS
SHARPNESS
COLOR
TINT
NR
COLOR TEMP.
GAMMA
LOW TONE
SET UP LEVEL
COLOR TUNE
CINEMA MODE
PICTURE MODE
SEL.
ADJ.
Information
Setting the color temperature
LOW: Redder
MIDDLE LOW: Slightly red
MIDDLE: Standard (slightly bluer)
HIGH: Bluer

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
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.
: OFF
R
G
: OFF
: HIGH
: 2.2
: AUTO
: 0%
: ON
: NORMAL
EXIT RETURN
GAIN RED
20
E-18
4-22

Changing the Gamma Curve

This feature adjusts the brightness of the midtone areas
while keeping shadows and highlights unchanged.
Example: Setting "2.3"
On "GAMMA" of "PICTURE" menu, select "2.3".
PICTURE
PICTURE MEMORY
CONTRAST
BRIGHTNESS
SHARPNESS
COLOR
TINT
NR
COLOR TEMP.
GAMMA
LOW TONE
SET UP LEVEL
COLOR TUNE
CINEMA MODE
PICTURE MODE
SEL.
ADJ.
Information
GAMMA settings
The picture becomes darker as the number increases
(in the sequence of 2.1, 2.2, 2.3, 2.4).
* These values are approximate.

Making the Low Tone adjustments

This feature allows more detailed tone to be reproduced
especially in the dark area.
Example: Setting "2"
On "LOW TONE" of "PICTURE" menu, select "2".
PICTURE
PICTURE MEMORY
CONTRAST
BRIGHTNESS
SHARPNESS
COLOR
TINT
NR
COLOR TEMP.
GAMMA
LOW TONE
SET UP LEVEL
COLOR TUNE
CINEMA MODE
PICTURE MODE
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.
CONFIDENTIAL
: OFF
R
G
: OFF
: MIDDLE
: 2.3
: AUTO
: 0%
: ON
: NORMAL
EXIT RETURN
: OFF
R
G
: OFF
: MIDDLE
: 2.2
: 2
: 0%
: ON
: NORMAL
EXIT RETURN

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