Apple AppleVision 750 - Manual (Page 70)

There are one or two very thin gray lines across the screen, one near the top and the
other near the bottom.
m This is a normal characteristic of the Trinitron color picture tube design.
The lines do not appear in any documents you print.
The screen image is off center.
m Adjust the center of the image. For Mac OS–based computers, click the
Geometry button in the Monitors & Sound control panel and modify the
Position setting. For Windows-based computers, select the Geometry
menu; then, click Vertical Shift. Press – to move the screen down and + to
move the screen up. Repeat the process for Horizontal Shift.
The screen image is tilted slightly to the left or right.
m Adjust the rotation of the screen image. For Mac OS–based computers,
click the Geometry button in the Monitors & Sound control panel and
modify the Rotate settings. For Windows-based computers, select the
Geometry menu; then, click Rotate. Press – to rotate counterclockwise
and + to rotate clockwise.
The screen image is too large or too small.
m Adjust the horizontal or vertical size of the screen image. For
Mac OS–based computers, click the Geometry button in the Monitors &
Sound control panel and modify the height/width settings. For Windows-
based computers, select the Geometry menu; then, click Width. Press – to
decrease width and + to increase width. Repeat the process for Height.
m Make sure overscan is off. For Mac OS–based computers, click the
Geometry button in the Monitors & Sound control panel and select Off
for overscan. For Windows-based computers, select the Tools menu; then,
click Overscan. Press – to turn off overscan.
m Try changing to another resolution. For Mac OS–based computers, click
the Monitor button in the Monitors & Sound control panel and select
another resolution. For Windows-based computers, see the manual that
came with your computer or video card.
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