Repair manual

CALIBRATION & ADJUSTMENTS
5-16
5. Turn the focus wheel on the collimator while looking through the collimator
eyepiece. Look in the eypiece and focus the collimator until the phosphors on the
screen are the sharpest possible. Look at the center cross pattern.
6. When the sharpest image is obtained, look at the dial on the collimator. The dial will
indicate in 1000ths of an inch, the amount of shimming needed, if any, between the
CRT mount and the front housing of the Digital Palette. If the reading is within
+ .015 inch, no shimming is necessary.
7. To install the shims, loosen the four screws which secure the CRT mount to the front
housing of the Digital Palette (Figure 5-11).
Figure 5-11. Installing Shims