Technical information

2.6.2.3.4 Geometry Adjustments

Proceed as follows.

1. Select pattern A, the crosshatch pattern on a black background:

a. Adjust RT12 (Trapezoidal) and RT11 (Orthogonal) so that the four

corners of the green rectangle are square within the bezel (see

Figure 9-8).

b. Adjust RT14 (East-West Pincushion) to set the most straight

vertical lines (see Figure 9-8).

PICTURE 55

Figure 9-8. Geometry Adjustments, 9515 Display

c. For modes 1, 2, and 3, adjust RT3 (Horizontal Image Centering) to

center the rectangle. Repeat for Mode 4, adjusting RT2.

d. For modes 1, 2, and 3, adjust RT7 (Width) for a gap of 11 mm

(measured at the horizontal center line of the screen) between the

vertical edges of the green rectangle and the inner edges of the

bezel. Repeat for Mode 4, adjusting RT8.

e. You might have to repeat steps 1a, 1b, 1c, and 1d.

2. Using the same test pattern, adjust sequentially RT6 (Vertical Height)

and RT13 (Vertical Centering). Set the picture in the center of the

screen with a gap of 7.5 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

2.6.2.3.4 - 1