Panasonic TH-P46U30G Service Manual page 30

9.1.3. White balance adjustment
The adjusting method is different according to the PEAKS EEPROM version.
[copy adjustment] : Peaks EEPROM ver.1.00-
[Differential and copy adjustment] : Peaks EEPROM ver.1.**-
Name of measuring instrument
W/ B pattern
Color analyzer
(Minolta CA-100 or equivalent)
[copy adjustment]
Connect IIC cable (bus controller-cable) after banner OSD appear.
And after SRQ-L, begin an adjustment 2 seconds later.
• Make sure the front panel to be used on the final set is fitted.
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little colour variation.
Note:
Copy Adjustment method in service mode.
When you push [OK] key in each item,
Adjustment data is copied between HD data and SD data.
1. Enter the service mode.
Please receive the Analog-RF.
Or, please select CVBS/YUV/HDMI. (No inputting is possible.).
(Forbid Analog-RF with no signal.)
2. A number key [1] or [2] are operated and [WB-ADJ] is displayed.
Check that the color temp is [COOL].
3. A number key [0] is operated and select [METHOD 01].
4. A number key [5] is operated and [INNER PATTERN] is displayed.
5. Select [G-CUTOFF] item, using the number-key [3] or [4], and set to [80], using the volume-key [+] or [-].
Also, [B-CUTOFF] and [R-CUTOFF] set to [80].
6. Set [G-DRIVE] at [D0].
7. Touch the signal receiver of color analyzer to the INNER PATTERN center, and adjust B drive and R drive
so x, y become the [COLOR TEMP COOL] in the below table1.
8. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
9. Set color temp to [NORMAL] using [7] key.
10. Fix G-CUTOFF, B-CUTOFF and R-CUTOFF at [80].
11. Set [G-DRIVE] at [D0].
12. Adjust B-DRIVE and R-DRIVE so the INNER PATTERN x, y become the [COLOR TEMP NORMAL] in the
below table1.
13. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
14. Set color temp to [WARM] using [7] key.
15. Fix G-CUTOFF, B-CUTOFF and R-CUTOFF at [80].
16. Set [G-DRIVE] at [D0].
17. Adjust B-DRIVE and R-DRIVE so the INNER PATTERN x, y become the [COLOR TEMP WARM] in the
below table1.
18. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
19. Confirm [METHOD=01].
Please refer table2-3 to address.
Asking matter to execute white balance difference adjustment.
Please feed back the DAC value in the adjusted each color temperature in an internal pattern.
Panel surface
Steps
30
Connection
Picture menu : Dynamic
ASPECT : 16:9
Condition is same at
alternative method too.
METHOD=01
copy adjustments
Remarks
Remarks