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6-8
98770 Adjustments
Raster Shape
Once the raster is positioned and sized, the raster shape adjustments are used to straighten and
proportion the raster sides to obtain a rectangular raster.
The raster shape adjustments interact with each other and may affect the raster size.
Set the switch on the A13, (A43, or A53) assembly to the rear to display a full white alpha
raster.
Procedure
1. Adjust the phase control to make the edges of the raster equal in height.
[
J
Wrong
T
1
Correct
• 0
0
Left and Right Sides Equal
1
1
Note
If the raster appears tilted after this adjustment (with the bezel seated
evenly), remove the bezel assembly, loosen the four screws securing
the CRT assembly and tilt the CRT assembly as necessary to correct
the raster tilt. Tighten the four screws securing the CRT assembly,
reseat the bezel assembly evenly and recheck the raster tilt.
2. Adjust the top and bottom ratio control to produce an equal but opposite shape on the
top and bottom edges of the raster.
Equal but Opposite Shapes of Top and Bottom Edges
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