Apple 1705 Computer Monitor User Manual

Troubleshooting First Checklist/ - 3
Vertical refresh rate of 47-120 hertz
For more information on what computers or video cards are
compatible with the 1705 display, see the Specifications chapter.
The CRT raster will not always resemble a perfect
CRT tolerances allow for some distortion. Additional distortion can
be caused by magnetized metal objects (desks, file cabinets, etc.).
Move the unit to a different location if you notice raster bowing or
bent raster edges.
Jitter, faint lines, or screen movement can be caused
by external interference such as electronic devices
and fluorescent lights
Move the unit to another room or building to help determine if
external interference is the source of the problem.