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Saturday 31 March 2018 at 11:53
There are only 5 machines listed on the Pinball owners website; 4 of these in Europe and just 1 in the US. You could try contacting these owners via the site and see if you get a reply and, better still, a copy of the schematic.
Or of course, Pinball Resource might just have a copy!
Planetary pinba...
Source: http://pinside.com/pinball/forum/topic/help-with-williams-magic-clock#post-4312403