Panasonic TH-42PHD6A, Service Manual

Page: 114 / 339

10.4. PAL/SECAM panel white balance
1 PAL Color Picture: 1) Find the nearest area to brightness of 10 cd/m
2
as Low
Gray Scale Analyzer Normal Sub Adjust light by color sensor.
Pattern White balance: Sub Bright 2) Adjust Sub bright to set Low light level to 10 cd/m
2
Cool exactly.
Aspect: PANEL W/B
16:9 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.
High light 75% Sub Adjust
Low light 15% 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.
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. x y
Cool(Hi) 0.276 0.276
Normal(Mid) 0.288 0.296
Warm(Low) 0.313 0.329
Fig. -02
2 Picture: 1) Change white balance to "Normal".
Normal PANEL W/B
White balance: R,G,B cut off 2) Repeat procedure 3) to 11) of Cool mode.
Normal PANEL W/B
Aspect: R,G,B Drive
16:9
3 Picture: 1) Change white balance to "Warm".
Normal PANEL W/B
White balance: R,G,B cut off 2) Repeat procedure 3) to 11) of Cool mode.
Warm PANEL W/B
Aspect: R,G,B Drive
16:9
4 Picture: Picture Menu 1) Change color templature to "Cool".
Normal Sub Adjust
White balance: Sub Bright 2)Re-set Sub bright to "30"
Cool
Aspect:
16:9
INPUT Alignment menu Procedure Equipment Setting
20
TH-42PHW6EX / TH-42PHD6EX / TH-42PHD6BX / TH-42PHD6UY