Technical information
2.5.2.4.6 Procedure Using a Color Analyzer
The use of a color analyzer is recommended, if available, for setting
color points and brightness.
All adjustments must be made with the brightness control set at center
detent. Select mode 4 (or mode 3 if not available) to display the test
patterns.
1. Select option 3, pattern C (Full Screen Raster), and press the
spacebar to get a black screen.
a. Set RV014 (R.BKG) and RV034 (B.BKG) fully clockwise.
b. Adjust RV508 (G2) until a background raster is just visible.
c. Adjust RV014 (R.BKG) until raster has a red tinge, then readjust
until the red tinge just disappears.
d. Adjust RV034 (B.BKG) until raster has a blue tinge, then readjust
until the blue tinge just disappears.
e. Adjust RV508 until the background raster just disappears. When
the background color point is set correctly, the raster is white
or gray until it disappears. If it is not, repeat this step.
2. Check that the contrast control is set to maximum and the brightness
control is at center detent.
3. Press PF3 to return to the setup patterns. Select option 2, pattern B
(50 mm square block).
4. Press the spacebar to get a white block.
5. Adjust the three drive potentiometers (RV011, RV021, and RV031) for
the correct white color point.
Using a color analyzer, in accordance with the manufacturer's
instructions, this is:
x=0.297 ± 0.01
y=0.320 ± 0.01.
6. Set RV102 (SUB CONT), using the color analyzer to give:
(8517) 150 cd/m².
(9517) 130 cd/m².
7. Set contrast control to minimum (counterclockwise). Readjust RV014
and RV034 for correct color point.
8. Repeat step 2 to step 7, until the color point is maintained at
minimum and maximum settings of the contrast control.
9. Press PF3 to return to the setup patterns. Select option 4, pattern D
(Gray Scale). Set contrast control to maximum.
10. Check that all levels of the scale are visible. If a background
raster is visible, adjust G2 until the background raster just
disappears.
11. After adjusting G2 reset the color point, step 2 to step 10.
12. Do focus and convergence adjustments after this procedure.
PS/2 Displays Maintenance Manual
Procedure Using a Color Analyzer
¦ Copyright IBM Corp. 1993
2.5.2.4.6 - 1