Pal/Secam Panel White Balance - Panasonic TH-42PHW7EX Service Manual

TH-42PHW7EX / TH-42PHD7EK / TH-42PHD7BK / TH-42PHD7UY

11.4. PAL/SECAM panel white balance

INPUT
1 PAL Color
Gray Scale Analyzer
Pattern
High light 75%
Low light 15%
2
3
4
Equipment Setting
Picture:
Normal Sub Adjust
White balance:
Cool
Aspect:
16:9
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:
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.
PANEL W/B
G cut off 3) Set G cut off to " 80 ".
PANEL W/B
B cut off 4) Adjust B and R cut off to set color temperature as
R cut off shown Fig.-02.
Sub Adjust
Sub Bright 5) If Sub Bright is changed re-adjust it to set Low light
to 10 cd/m
6)Find 75% of white area by color sensor.
PANEL W/B
G Drive 7) Set G Drive to " D8 ".
PANEL W/B
B Drive 8) Adjust B and R Drive to set color temperature
R Drive as shown Fig.-02.
9) Repeat procedure 4) to 7) to set both Low light and
high light.
PANEL W/B
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".
PANEL W/B
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
Picture Menu 1) Change color templature to "Cool".
Sub Bright 2)Re-set Sub bright to "30"
28
Procedure
.
2
x y
0.276 0.276
0.288 0.296
0.313 0.329
Fig. -02
as Low
2
2