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Music Man Schematics typo?

In comparing the schematic for my 2475-150  and the Transformer diagram attached in the same PDF I noticed that the schematic shows a OR-Y connection (see image 1 attached). This OR-Y connection does not show on the Transformer diagram (image 2 attached) however does show a R-Y connection that doesn't show up on the schematic. 
Can I assume that this is just a typo on the schematic with an O added to the RY?

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mm210 Fri, 04/17/2026 - 05:51

I'm thinking you are right, as the only pic I have showing transformer wiring doesn't show orange yellow, only red yellow. Looks like an oops.