Adjustments
19
3. Turn the screen control (G2) clockwise until the screen background is
visible. G2 is the bottom control on the high-voltage block. Then turn
G2 counterclockwise until the screen background disappears. (Raster
cut-off is not set.)
4. Turn the green background control (RV404) clockwise until the screen
background is visible. Then turn RV404 counterclockwise until the
screen background disappears.
Repeat this step for the blue background control (RV405).
5. Set the contrast control to maximum (fully clockwise).
6. At the keyboard, type
T 84
and press
Return
to display the red screen.
7. Place the radiance meter at the center of the monitor screen and hold
the meter there. See Section 2.2 for instructions on how to operate
the meter.
8. Adjust the red drive (RV401) clockwise until the meter reads 0.174.
9. Type
T 85
and press
Return
to display the green screen.
10. Adjust the green drive (RV402) clockwise until the meter reads 0.195.
11. Type
T 86
and press
Return
to display the blue screen.
12. Adjust the blue drive (RV403) clockwise until the meter reads 0.183.
13. Type
T 82
and press
Return
to display the white screen. The meter
reading for the white screen should be 0.533 ( 0.003). If not, recheck
the setting for the red, green, and blue drives. Adjust the settings if
necessary.
14. Set the contrast control to minimum (fully counterclockwise).
15. Type in the T commands and check the readings (with the radiance
meter) for the red, green, blue, and white screens.
Red screen
Green screen
Blue screen
White screen
0.014
0.018
0.017
0.047
If the screen readings differ from those listed above:
• Check that the contrast control is set at maximum.
• Check the color drive settings, then adjust RV401, RV402, and
RV403 if necessary.