Runco DTV-940 - Manual (Page 30)

6-6
Raster Shift Adjustment
The green raster must be centered both horizontally and vertically on the center of
the CRT surface. To center the green raster, look into the green lens and use the
control disc to move the raster.
CAUTION
It is necessary to look into the lenses to perform these adjustments. To avoid eye
discomfort while looking into the lenses, reduce the contrast and gradually
increase the brightness level until the raster becomes visible on the face of the CRT.
To start the adjustment, use the control disc to highlight Raster shift and press
ENTER to display the green raster on the phosphor.
Press EXIT to return to the Geometry menu.
Note : Horizontal and Vertical shifts for Red and Blue should end
up with a setting close to 50%. If these settings are significantly
greater or lesser than 50%, contact a RUNCO authorized service
technician.