Technical information

2.2.2.3.4 Geometry Adjustments

Proceed as follows.

1. Select pattern B, 50 mm Square Box on a black background:

Note: Before doing this step, if you are servicing a display

with a metal card tray, adjust RV203 (Raster Center) first to

centralize the raster in the bezel. You may have to turn

Brightness control CCW to see raster.

Adjust RV200 (H.Phase) potentiometer to centralize the rectangle

horizontally on the screen.

a. Adjust RV202 (Width) for a gap of 14 mm (measured at the

horizontal center line of the screen) between the vertical green

edges of the rectangle and the inner edges of the bezel.

b. Adjust RV201 (East West Pincushion) to set the straightest

possible vertical lines.

c. Press the F3 function key, then select pattern A (Crosshatch).

Adjust the RV302 (V. Lin.) potentiometer to get squares of equal

height.

d. You may have to repeat steps a, b, c, and d.

2. Press the F3 function key, then select pattern B (50 mm Square Box),

adjust sequentially RV300 (Vertical Height) and RV301 (Vertical

Centering). Set the picture in the center of the screen with a gap of

8 mm (measured at the vertical center line of the screen) between the

horizontal edges of the green rectangle and the inner edges of the top

and bottom of the bezel.

PS/2 Displays Maintenance Manual

Geometry Adjustments

2.2.2.3.4 - 1