Panasonic TH-103PF9EK, Service Manual

Page: 67 / 121

11.2. HD white balance adjustment
Instrument Name Connection Remarks
· HD W / B pattern (COMPONENT Output)
· Color analyzer
(Minolta CA-100 or equivalent)
PC input
Panel surface User setting: Normal
(Picture menu: Standard)
Procedure Remarks
· Ensure aging is adequate.
· 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.
1. Set COMPONENT / RGB-IN SELECT to COMPONENT
2. Select the IIC mode "PANEL W / B Adj.” item.
3. Check that the color temperature is “COOL (High)”.
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
High" in the below table.
7. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
8. Set color temperature to “NORMAL (Medium)”.
9. Fix G drive at E0h and adjust B drive and R drive so the highlight window´s x, y becomes
the "Color temperature Medium" in the below table.
10. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
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 Low” shown in the below table.
13. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
14. Copy the R drive, G drive and B drive data in YUV1_525ip, YUV3_625ip 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.
Picture Menu: Standard
Picture: 25
Aspect: Full
Position and size: Normal
· Highlight section Signal amplitude 75%
·
Cutoff standard G: 80h
· Drive standard G: E0h
67
TH-103PF9UK / TH-103PF9EK