White-Balance, Luminance Adjustment - Buffalo BU1715 Service Manual

9. White- Balance, Luminance Adjustment
Approximately 2 Hours should be allowed for warm up before proceeding White-Balance
adjustment.
Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 9 to 9300
0
Channel 10 to 7500
9300 parameter is x = 283, y = 297, Y = 180 ±20 cd/m
7500 parameter is x = 299, y = 315, Y = 180 ±20 cd/m
6500 parameter is x = 313, y = 329, Y = 180 ± 20 cd/m
SRGB parameter is x = 313, y = 329, Y = 180 ±20 cd/m
And set the timing to the optimal resolution and full white pattern.
How to setting MEM.channel you can reference to chroma 7120 user guide or simple use " SC" key and " NEXT"
key to modify xyY value and use "ID" key to modify the TEXT description Following is the procedure to do
white-balance adjust.
Press MENU (about 10 second), along with re-plug power cable will activate the factory mode.
Gain adjustment:
Change the mode of Gray 32.
Move cursor to "-Factory Setting-" and press MENU key to enter this sub-menu,
Move cursor to " Factory" and press MENU key,
Move cursor to " Auto Level" and press MENU key to adjust Gain and Offset automatically,
And change to the full white pattern.
a. Adjust Color1 (9300
9. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
10. Switch the MEM.channel to Channel 03 (with up or down arrow on chroma 7120)
11. The LCD-indicator on chroma 7120 will show x = 283, y = 297, Y = 180 ±20 cd/m
12. In Color1 sub-menu, adjust C to 85, adjust L to 100.
13. Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
14. Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
15. Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
16. Repeat above procedure (item 5,6,7) until chroma 7120 RGB value meet the tolerance =100±2
b. Adjust Color2 (7500
17. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
18. Switch the MEM.channel to Channel 03 (with up or down arrow on chroma 7120)
19. The LCD-indicator on chroma 7120 will show x = 299, y = 315 ±28, Y = 180 ±20 cd/m
20. In Color2 sub-menu, adjust C to 85, adjust L to 100,
21. Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
22. Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
23. Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
K; MEM. Channel 11 to 6500
0
K) color-temperature
0
K) color-temperature
0
K colors; MEM. Channel 3 to SRGB.
2
,
2
,
2
,
2.
43
Buffalo BU1715
0
K colors; MEM.
2
2