Adjustment; Rgb White Balance Adjustment - Panasonic TH-85VX200C Service Manual

10.2. Adjustment

10.2.1. RGB white balance adjustment

Instrument Name
• RGB VGA60 W / B pattern
• Color analyzer
(Minolta CA-100 or equivalent)
[Condition]
• 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 color variation.
[Adjustment]
1. Set COMPONET / RGB-IN SELECT to RGB.
2. Select the IIC mode [PANEL W / B Adj.] item.
3. Check that the color temperature is [COOL (Hi)].
4. Output a white balance pattern.
5. Touch the signal receiver of color analyzer to the highlight window's center.
6. Fix G drive at E0h and adjust B drive and R drive so x, y become the [Color temperature
COOL (Hi)] in the below table.
Adjust it again after it lowers of 08h data when the adjustment is NG. (In addition, adjust it
after it lowers by 08h data for NG.)
7. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes
FCh with the gain ratio kept. (ALL-DRIVE)
8. Set color temperature to [NORMAL (Mid)].
9. Fix G drive at E0h and adjust B drive and R drive so the highlight window's x, y becomes
the [Color temperature NORMAL (Mid)] in the below table.
Adjust it again after it lowers of 08h data when the adjustment is NG. (In addition, adjust it
after it lowers by 08h data for NG.)
10. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes
FCh with the gain ratio kept. (ALL-DRIVE)
11. Set color temperature to [WARM (Low)].
12. Set G drive to E0h and adjust B drive and R drive so the highlight window's x, y become
the [Color temperature WARM (Low)] shown in the below table.
Adjust it again after it lowers of 08h data when the adjustment is NG.(In addition, adjust it
after it lowers by 08h data for NG.)
13. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes
FCh with the gain ratio kept. (ALL-DRIVE)
14. Copy the R drive, G drive and B drive data in NTSC, PAL DVI region.
Adjustment target
Hi-light: x ± 0.003 y ± 0.003
Hi-light is target of the number at drive adjustment in the hi-light windows.
Therefore, it is not target of the hi-light number at after adjustment white balance.
Connect to
PC IN terminal
Panel surface
Steps
49
Setting
Picture menu: STANDARD
User setting: Normal
except PICTURE: max 30
Remarks
Picture Menu: Standard
User setting: Normal
except PICTURE: max 30
Aspect: Full (16 : 9)
Position and size: Normal
• [7] key : color temperature select.
• [9] key : Picture menu select.
• Highlight section Signal amplitude 75%
• Drive standard G: E0h
TH-85VX200C