Pages 5 & 6 of the Z1 board schematics (dwg 200028-200) are missing from the 
schematic pdf file. Instead, a duplicate of pages 5 & 6 of the Z2 board schematics
(dwg 200058-200) are in their place. 

The Z1 and Z2 boards of the FD360 are very similar and the FD360 schematic set
may be useful when trouble shooting an FD3712.