Samsung PLK405WX/XAC Service Manual page 30

Alignment and Adjustments
5-6-6 White Balance Adjustment
5-6-6 (A) REFERENCE COORDINATE TABLE
W/B Spec
C A-100
H/L
M/L
L /L
5-6-6 (B) POSITION OF MEASUREMENT PROBE
2
1
100mm
Probe 1
Special Notes:
- When the value of the Middle White does not meet the Reference Coordinate Table,
adjust after selecting the factory value of r,b main bright.
- Adjust the CA100 Probe after calibrating it.
- Use a Shibasoku Pattern Generator (10-Step Pattern Generator).
5-6-6 (C) ADJUSTMENTS
1. Preadjustment
- Input a 10-Step Gray-Scale Pattern.
- Enter the Factory Mode by pressing the TV/VIDEO on the remote control.
2. Sub-bright Adjustment : Adjust so that the value of luminance of the probe
meets the reference coordinate table.
3. Middle White Adjustment : Adjust the factory value of r sub bright, b sub bright
so that the value of the probe
4. High White Adjustment : Adjust the factory value of r sub contrast, b sub contrast
so that the probe
5. Low White Adjustment : Adjust the factory value of
of luminance of the probe
6. Low White Adjustment : Adjust the factory value of r
value of the probe
7. Check that the measurement value of the probe
table (see above). Otherwise, re-do the white balance adjustments.
5-10
Diffusion F ilter Used
x y
270 261
273 250
275
260
3 4 5 6 7
Probe 2
Probe
meets the reference coordinate table.
meets the reference coordinate table.
meets the reference coordinate table.
meets the reference coordinate table.
Y
±
7.0
0.5
±
1.5
0.5
±
0.20 0.03
8 9 10
10-sept signal input
3
γ
ctrl1 so that the value
γ γ
ctrl1, b
, , meets the reference coordinate
ctrl1 so that the
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