Ntsc White Balance Adjustment - Panasonic TH-42PX20U Service Update Information

NTSC White Balance Adjustment

Equipment required: NTSC Pattern Generator, Colorimeter
Panel Settings; Picture = Standard, Color Temperature = Cool, Aspect Ratio =
16:9
Step 1- Using the Pattern generator; apply a 20
IRE Window pattern signal to the panel. Apply the
color sensor to the panel and monitor the values.
Step 2- Adjust the Sub Bright Setting to 10 cd/m
Step 3- Set the G Cutoff Setting Value to 80.
Step 4- Adjust the Red and Blue Cutoff settings to
match the values in Table 1.
Step 5- Readjust the Sub Bright setting to 10
2
cd/m .
Step 6- Apply an 80 IRE window pattern signal to
the Panel.
Step 7- Set the G Drive Setting value to E8.
Step 8- Adjust the Red and Blue Drive settings to
match the values in Table 1.
Step 9- Reapply the 20 IRE pattern and 80 IRE
patterns and verify that the drive and cutoff
settings match the settings in Table 1, adjust as
necessary.
Step 10- Adjust the All Drive Settings value to FC.
Step 11- Reapply the 20 IRE pattern and verify the light settings match the
table below, adjust as necessary.
Color Temperature
Cool (High)
Normal (Mid)
Warm (Low)
Step 12- Press the R button then the Picture button on the remote control.
Change the color temperature to Normal. Press the R button again then
the Action button to re-access the IIC mode.
Step 13- Repeat steps 2 to 11 for Normal Color Temperature.
Step 14- Press the R button then the Picture button on the remote control.
Change the color temperature to Warm. Press the R button again then
the Action button to re-access the IIC mode.
Step 15- Repeat steps 2 to 11 for Warm Temperature.
Step 16- Change the Color temperature to Cool Mode, then re-adjust the
Sub bright value to "30".
2
.
Table 1
X
0.276
0.288
0.313
64
20 IRE Window
pattern
80 IRE Window
pattern
Y
0.276
0.296
0.329