In the Galileo Schematic all the references to page numbers are out by one.
Wherever the schematic shows a signal going off to another page it is reference like this, for example: 18C2<> where 18 is the page number and C2 is the X/Y reference on that page.
However all the page numbers are out by 1, so the signal is actually to be found on page 17 at C2.
Take a look at this highlighted example:
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