Technical information

2.3.2.3.4 Geometry Adjustments

Proceed as follows.

1. Select Display Mode 1, then select Pattern A (Crosshatch)

Note: It may be necessary to adjust G2 and Focus on the HVT and RV500

(factory preset Horizontal Frequency) to be able to view the Main Menu

of the Test-Pattern Diskette.

2. Ajust G2 control (on EHT) until a background raster appears and the

left and right borders of the raster are visible.

3. Adjust RV601 (Horizontal Raster Centering) to center the background

raster on the screen.

Note: If Display Mode 4 is available also check for this condition in

Display Mode 4.

4. Adjust RV400 (Vertical Height) counter clockwise until there is

approximately 30 mm between the top and bottom of the crosshatch

pattern and the top and bottom of the bezel.

5. Adjust RV401 (Vertical Linearity) for equal height of the top and

bottom squares of the crosshatch pattern.

6. Using the same test pattern, adjust sequentially RV400 (Vertical

Height) and RV403 (Vertical Centering). Set the crosshatch 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 top and bottom of the bezel.

7. Adjust RV402 (East West Pincushion) to set the straightest possible

vertical lines

8. Adjust RV501 (Horizontal Phase Mode 1,2, and 3) to center the

crosshatch within the right and left bezel.

Note: If Display Mode 4 is available also check for this condition in

Display Mode 4 and adjust RV502 (Horizontal Phase Mode 4) as required.

9. Adjust RV600 (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.

PS/2 Displays Maintenance Manual

Geometry Adjustments

2.3.2.3.4 - 1