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PROCEDURE
1. Display the full white pattern.
2. Adjust VR101 (R-Gain) and VR103 (B-Gain) so
that the video is white.
(x = 0.283 ± 0.02 and y = 0.298 ± 0.02)
5-3-5 White Balance Fine Adjustment
CONDITIONS
Measurement instrument: Color analyzer
Scanning frequency:
53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image:
Full white pattern
X-Y coordinates:
x = 0.283 ± 0.02
y = 0.298 ± 0.02
PROCEDURE
1. Adjust the Contrast control so that the
brightness of the video is about 5 ft-L.
2. Check whether the white coordinates of the
video meet the specification above. If they do
not, adjust them so that they do.
3. Adjust the Contrast to maximum luminance.
4. Check whether the white coordinates still
meet the specification above. If they do not,
adjust them so that they do.
5-3-6 ABL Point Adjustment
CONDITIONS
Measurement instrument: Color analyzer
Scanning frequency:
53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image:
Full white pattern
Brightness:
Maximum
Contrast:
Maximum
PROCEDURE
Adjust VR501 (ACL) so that the brightness level is
40 ± 1 ft-L.
5-3-7 Focus Adjustment
CONDITIONS
Measurement instrument: Color analyzer
Scanning frequency:
53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image:
“H” character pattern
Brightness:
Maximum
Contrast:
Maximum
PROCEDURE
1. Adjust the Focus VR on the FBT to display the
sharpest image possible.
2. Use Locktite to seal the Focus VR in position.
5-3-8 Luminance Uniformity Check
CONDITIONS
Measurement instrument: Color analyzer
Scanning frequency:
53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image:
White flat field
Brightness:
Cut off point at 30 ft-L
PROCEDURE
Measure luminance at nine points on the display
screen: top left corner, top center, top right corner,
center row left side, center, center row right side,
bottom left corner, bottom center, and bottom
right corner.
5 Alignment and Adjustments
5-8
CKA42*7L/5227L
Содержание CKA4217L
Страница 2: ...Samsung Electronics Co Ltd September 1997 Printed in Korea Code No BH68 60933A ...
Страница 10: ...Memo 2 Product Specifications 2 4 CKA42 7L 5227L ...
Страница 38: ...Memo 8 Exploded View and Parts List CKA42 7L 5227L 13 4 ...
Страница 62: ...11 Schematic Diagrams 11 4 CKA42 7L 5227L 33 34 35 36 37 38 11 6 Video Part Schematic Diagram ...