Apple PC Compatibility Card 12-inch card - Manual (Page 198)

Solutions and explanations for problems
This section describes several checks and tests you can perform to help
diagnose problems with your video circuitry. In some cases you can fix the
problem yourself; in other cases you may need to consult a specialist.
System is locked up.
If your system is not responding, try the following:
m Make sure the software is installed properly.
m Reset the video configuration to factory defaults using the Install program.
If this works, the problem is likely due to incorrect configuration.
Test patterns are OK but applications do not sync.
You may have selected the wrong monitor type. Change the settings in the
Install program.
Windows driver is not installing properly.
Make sure Windows is running in 386 Enhanced Mode. Incompatible
memory managers may prevent Windows from starting in enhanced mode. If
this occurs, remove the memory manager.
AutoCAD driver is not installing properly.
If using a 386 processor, ensure that AutoCAD has been configured for the
appropriate ADI driver. The protected mode driver requires extended memory.
Memory aperture test fails, diagnostics program locks, or the computer restarts during
aperture test.
If you see a message that the memory aperture location is conflicting with
your system memory, restart the Install program as follows:
INSTALL APMAP
Enable Memory Aperture, selecting a location above but not overlapping
System Memory (S), BIOS (B), or Reserved (R) locations.
184 Appendix C