Panasonic gpf13du tc-p42g25 Service Manual
29
9.1.3.
White balance adjustment
Name of measuring instrument
Remarks
Color analyzer
(Minolta CA-100 or equivalent)
(Minolta CA-100 or equivalent)
Note:
The CA-100 which was calibrated to less than +-0.001 with CS-1000.
Procedure
Remarks
• 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.
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little color variation.
1. Set to Service mode, WB-ADJ.
2. Select [VIVID] for picture menu.
3. Select [Cool] for color temperature.
4. Push [5] key of remote controller to display window pattern.
5. Confirm the brightness. The following is the confirmation value.
2. Select [VIVID] for picture menu.
3. Select [Cool] for color temperature.
4. Push [5] key of remote controller to display window pattern.
5. Confirm the brightness. The following is the confirmation value.
TC-P42G25 200cd/m2
6. Select [Cinema] for picture menu.
7. Select [Warm] for color temperature.
8. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.
9. Attach the sensor of color analyzer to the center of window pattern.
7. Select [Warm] for color temperature.
8. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.
9. Attach the sensor of color analyzer to the center of window pattern.
10. 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.
11. Increase RGB together so the maximum drive value in RGB becomes [FF].
That is, set [ALL DRIVE] to [FF].
Execute adjustment again. When that, the maximum value of R/G/B DRV should be [FF], and either R/G/B DRV
should be [FF].
Execute adjustment again. When that, the maximum value of R/G/B DRV should be [FF], and either R/G/B DRV
should be [FF].
12. The average of the adjusted values in color temperature Cool, Mid, and Warm is shown in Table 4.
The setting value for color temperature Cool will be calculated by multiplying the adjusted value of color tempera-
ture Warm to the ratio of the value of Warm and Cool in each GBR value in Table 4.
Write that values to the data area of color temperature Cool in EEPROM (Table 3).
ture Warm to the ratio of the value of Warm and Cool in each GBR value in Table 4.
Write that values to the data area of color temperature Cool in EEPROM (Table 3).
13. The setting value for color temperature Mid will be calculated by multiplying the adjusted value of color tempera-
ture Mid to the ratio of the value of Warm and Mid in each GBR value in Table 4.
Write that values to the data area of color temperature Mid in EEPROM.
Write that values to the data area of color temperature Mid in EEPROM.
14. Select [VIVID] for picture menu when you check the adjusted data of Cool and Normal.
Note :
Adjusted value
must be written to
both SD data area
and HD data area
of the EEPROM.
must be written to
both SD data area
and HD data area
of the EEPROM.