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4.
Video Alignment / function memory recall
﹒
4.1
Input 1280x1024 91KHz full black pattern
﹒
4.2
Set Brightness 100%
﹐
Contrast 0%
﹐
turn the G2 knob to obtain raster light O/P about 0.7FL
﹒
4.3
Adjust R
﹑
G
﹑
B bias Control to meet following chromatically spec
﹒
9300
°
K
→
x = 0.283
±
0.003
﹐
y = 0.297
±
0.003
﹐
Y = 0.6
±
0.3 FL
﹒
6500
°
K
→
x = 0.313
±
0.003
﹐
y = 0.329
±
0.003
﹐
Y = 0.6
±
0.3 FL
﹒
5000
°
K
→
x = 0.346
±
0.003
﹐
y = 0.359
±
0.003
﹐
Y = 0.9
±
0.3 FL
﹒
4.4
Adjust Brightness to 50%
﹐
Contrast 100%
﹒
4.5
Apply 70mmx70mm green window pattern
﹐
adjust G-Driver to obtain green window pattern light O/P
about 23 ± 2FL (9300
°
K)
﹒
4.6
Apply white window pattern
﹐
adjust R-Driver
﹐
B-Driver to meet following chromatically spec
﹒
9300
°
K
→
x = 0.283
±
0.003
﹐
y = 0.297
±
0.003
﹐
Y = 33
±
2 FL
﹒
4.7
Apply 70mmx70mm green window pattern
﹐
adjust G-Driver to obtain green window pattern light O/P
about 21 ± 2FL (6500
°
K), 19 ± 2FL for (5000
°
K)
﹒
4.8
Apply white window pattern
﹐
adjust R-Driver
﹐
B-Driver to meet following chromatically spec
﹒
6500
°
K
→
x = 0.313
±
0.003
﹐
y = 0.329
±
0.003
﹐
Y = 33
±
2 FL
﹒
5000
°
K
→
x = 0.346
±
0.003
﹐
y = 0.359
±
0.003
﹐
Y = 33
±
2 FL
﹒
4.9
Apply full white pattern
﹒
4.10 Adjust VR4402 to obtain light O/P =30
±
1 FL
﹒
4.11 Apply full white pattern
﹐
adjust contrast from max to 10FL and check the chromatically meet following
spec
﹒
∣
x (at contrast
﹐
25.75) – x (at contrast
﹐
30FL)
∣∣
0.003
﹒
∣
y (at contrast
﹐
25.75) – y (at contrast
﹐
30FL)
∣∣
0.003
﹒
∣
x (at contrast
﹐
25.75) – x (at contrast
﹐
10FL)
∣∣
0.007
﹒
∣
y (at contrast
﹐
25.75) – y (at contrast
﹐
10FL)
∣∣
0.006
﹒
4.12 Functions “All mode recall”
﹒
Push button “ ” and power switch on
﹐
the picture should restore to that of factory mode
﹒
5.
Focus Adjustment
﹒
5.1
Apply signal ALL “mE” pattern at 1280*1024 91K mode
﹒
5.2
Set Brightness 50%
﹐
Contrast 100%
﹒
5.3
Set focus control for best focus
﹒
1
ViewSonic Corporation
4
4
Confidential
–
Do
Not
Copy
G220f
-1_G220f
B
-1
Summary of Contents for G220f-1
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