This may have been posted in the past, But I had just stumbled across this:
http://www.dasarodesigns.com/schematics-and-resources/?drawer=files*Apple
the 800K floppy schematic, and the Laserwriter schematic.
http://www.dasarodesigns.com/schematics-and-resources/?drawer=files*Apple
the 800K floppy schematic, and the Laserwriter schematic.

