26
8.2.
Adjustment
8.2.1.
White balance adjustment
Name of measuring instrument
Connection
Remarks
• W/B pattern
• Color analyzer
(Minolta CA-100 or equivalent)
Component input
Panel surface
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. Output a white balance pattern.
2. Check that the color temperature is “Cool”.
3. Set to serviceman mode, WB-ADJ.
4. Set “R-CUT” “G-CUT” “B-CUT” the values written in table 1.
5. Attach the sensor of color analyzer to the center of highlight window.
6. Fix G drive at C0h and adjust “B-DRV” and “R-DRV” so x, y value of color analyzer
become the “Color temperature High” in table 2.
7. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set “ALL DRIVE” to FC.
Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
8. Set color temperature to “Normal”.
9. Set “R-CUT” “G-CUT” “B-CUT” the values written in table 1.
10. Attach the sensor of color analyzer to the center of highlight window.
11. Fix G drive at C0h and adjust “B-DRV” and “R-DRV” so x, y value of color analyzer
become the “Color temperature Mid” in table 2.
12. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set “ALL DRIVE” to FC.
Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
13. Set color temperature to “Warm”.
14. Set “R-CUT” “G-CUT” “B-CUT” the values written in table 1.
15. Attach the sensor of color analyzer to the center of highlight window.
16. Fix G drive at C0h and adjust “B-DRV” and “R-DRV” so x, y value of color analyzer
become the “Color temperature Low” in table 2.
17. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set “ALL DRIVE” to FC.
Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
18. Set color temperature to “Cool”.
[ adjustment of “Normal” “Warm” by data shift from “Cool” adjust. ]
For “Normal” “Warm” adjustment, set values that the adjusted value of “Cool”
plus the figures wrote below.
19. Copy values adjusted by HD pattern to the NTSC data area of EEPROM.
Summary of Contents for TH-42PX80U
Page 15: ...15 6 4 No Picture ...
Page 25: ...25 8 1 4 Adjustment Volume Location 8 1 5 Test Point Location ...
Page 27: ...27 ...
Page 28: ...28 ...
Page 34: ...34 ...
Page 36: ...36 10 3 Wiring 2 ...
Page 37: ...37 11 Schematic Diagram 11 1 Schematic Diagram Note ...
Page 90: ...90 ...
Page 92: ...92 13 1 2 Accessories ...
Page 93: ...93 13 1 3 Mechanical Replacement Parts List ...
Page 96: ...96 13 2 Electrical Replacement Parts List 13 2 1 Replacement Parts List Notes ...