Specifications

Troubleshooting First Checklist - 2
First Checklist
Important: Many AppleVision 850 and 850AV display modules
returned for repair are found to be fully operational. Read this
checklist before you return a module, and prevent needless module
replacement and unnecessary time delays.
The AppleVision 850/850AV Display is not
compatible with all computers.
This display works with both Macintosh and IBM PC-compatible
computers. A video card may need to be installed to use this display
with some computers.
The display works with any computer that has the following
timing ranges:
• Horizontal scan rate of 30-94 kHz
• Vertical refresh rate of 48-120 Hz
For best display performance, operate the display in one of the
factory-preset screen resolutions listed in the Specifications
chapter in this manual.
The CRT raster will not always resemble a
perfect rectangle.
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.
Fluorescent lights, other monitors, or electronic appliances such
as coffee makers and copy machines can cause raster distortion.
Move the unit to another room or building to help determine if
external interference is the source of the problem.
Note: If the raster has shifted up/down or right/left only, adjust
it using the user controls. However, keep in mind that if you then
move the monitor to another location you may need to readjust the
centering controls. If the display changes (for better or worse)
when you move it to another location, the environment is the
source of the problem. Relocate the monitor or move the
distortion-causing object.