Apple color classic Instruction De Maintenance

Page de 141
 
 Adjustments
Video - 13
 
5 Set the green and blue 
drive controls to their 
3/4 position by turning 
the controls to their full 
clockwise position and 
then turn back 1/4 turn 
counterclockwise.
6 Set the sub-contrast 
control to its full 
clockwise position.
Blue Drive
Sub-Contrast
Green
Drive