Apple lc 580.performa 580cd Service Manual

Page of 151
 
 Adjustments
Video - 20
 
White Balance
 
Note:
 
  Perform the white 
balance adjustments after 
the monitor has been on for 
at least 10 minutes and the 
cutoff adjustments have been 
performed.
1 Run Display Service 
Utility to display the 
Gray Bars test pattern.
2 Using a hex-head plastic 
adjustment tool, set the 
SC (sub-contrast) 
control to its 
approximate midpoint.
Gray Bars
Adjustment
Controls