NEC MultiSync FE001SB, Service Manual

Page: 56 / 178

4-6
11. White Balance adjustment
(A) Setting
Enter Factory Mode,
Mode: No.12, Pattern: Full White.
Warm up 60 min.
Make External Degauss.
(B) Cut Off Adjustment
1. Select the color Mode 9300K.
2. Cut Off Adjustment : Video Signal Off (0.Vp-p),Bright Control set to Max., Adjust G. Bias so that the
brightness is equal to 3.4
±
0.7cd/m
2
(1FL
±
0.2FL).
3. 9300K (Select color Mode 9300)
Adjust R. Bias, B. Bias to equal X=0.283, Y=0.297, with readjusting G. Bias to keep the brightness at
3.4
±
0.7cd/m2 (1FL
±
0.2FL).
(C) “9300K, 5000K MODE” White Balance Adjustment
1. 9300K (Select color Mode 9300K)
1) Video Signal off (0.Vp-p), Contrast set to Max, Adjust Brightness to 0.1cd/m
2
.
2) 50*50mm Green block Pattern, Adjust G Gain to Y=86cd/m
2
.
3) 50*50mm White block Pattern, Adjust R, B Gain to x=0.283, y=0.297.
4) Adjust R, G, B gain again to meet following spec.
9300K x=0.283
±
0.010cd/m
2
y=0.297
±
0.010cd/m
2
Y=130
±
2cd/m
2