Apple Mac 5260/100 - Manual (Page 209)

5260 and 5280 Adjustments Video - 26
13 Open the Screen control
panel.
14 Set the Screen Contrast
slider control to its
maximum (far right)
position.
Note:
At this point, the
screen might appear too
bright and out of focus.
15 Run Display Service
Utility to display the
Gray Bars Test Pattern.
Screen
Screen Brightness
Screen Contrast
Run
Display Service
Utility
Gray Bars
Test Pattern
Screen
Control
Panel