Ntsc Panel White Balance - Yamaha PDM-1 Service Manual

PDM-1U / G / R /

12.2. NTSC panel white balance

INPUT
1 NTSC
Gray Scale
Pattern
High light 75%
Low light 15%
2
3
4
Note:
OSD is the difference between U model and G/R model.
Picture:Normal (U)/Standard (G/R)
White balance (U)/Color Temp (G/R)
Equipment Setting
Color Picture:
Analyzer Normal Sub Adjust
White balance:
Cool
Aspect: PANEL W/B
16:9
PANEL W/B
Sub Adjust
PANEL W/B
PANEL W/B
PANEL W/B
PANEL W/B
Picture:
Normal PANEL W/B
White balance:
Normal PANEL W/B
Aspect:
16:9
Picture:
Normal PANEL W/B
White balance:
Warm PANEL W/B
Aspect:
16:9
Picture: Picture Menu
Normal Sub Adjust
White balance:
Cool
Aspect:
16:9
Alignment menu
1) Find the nearest area to brightness of 10 cd/m
light by color sensor.
Sub Bright 2) Adjust Sub bright to set Low light level to 10 cd/m
exactly.
G cut off 3) Set G cut off to " 80 ".
B cut off 4) Adjust B and R cut off to set color temperature as
R cut off shown Fig.-01.
Sub Bright 5) If Sub Bright is changed re-adjust it to set Low light
to 10 cd/m
2
6)Find 75% of white area by color sensor.
G Drive 7) Set G Drive to " D8 ".
B Drive 8) Adjust B and R Drive to set color temperature
R Drive as shown Fig.-01.
9) Repeat item 4) to 7) to set both Low light and
high light.
R,G,B Drive 10) Increase same steps of R, G and B Drive to set
R,G,B Drive largest level of 3 color drive to "FC".
R,G,B cut off 11) Re-adjust Low light level again.
Color Temp.
Cool(Hi)
Normal(Mid)
Warm(Low)
1) Change white balance to "Normal".
R,G,B cut off 2) Repeat procedure 3) to 11) of Cool mode.
R,G,B Drive
1) Change white balance to "Warm".
R,G,B cut off 2) Repeat procedure 3) to 11) of Cool mode.
R,G,B Drive
1) Change color templature to "Cool".
Sub Bright 2)Re-set Sub bright to "30"
20
Procedure
.
x y
0.272 0.290
0.288 0.296
0.313 0.329
Fig. -01
as Low
2
2